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24 changed files with 10725 additions and 4632 deletions
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2
.gitignore vendored
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@ -1,2 +1,2 @@
SOURCES/libssh-0.10.6.tar.xz
SOURCES/libssh-0.10.4.tar.xz
SOURCES/libssh.keyring

2
.libssh.metadata
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@ -1,2 +1,2 @@
e8fb3b4750db11d2483cac4b5f046e301c09b72f SOURCES/libssh-0.10.6.tar.xz
4c48350a0a688ad82080175ed26a2019928a99c4 SOURCES/libssh-0.10.4.tar.xz
3f2ab0bca02893402ba0ad172a6bd44456a65f86 SOURCES/libssh.keyring

729
SOURCES/CVE-2023-48795.patch
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@ -0,0 +1,729 @@
From 4cef5e965a46e9271aed62631b152e4bd23c1e3c Mon Sep 17 00:00:00 2001
From: Aris Adamantiadis <aris@0xbadc0de.be>
Date: Tue, 12 Dec 2023 23:09:57 +0100
Subject: [PATCH 1/4] CVE-2023-48795: client side mitigation
Signed-off-by: Aris Adamantiadis <aris@0xbadc0de.be>
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
---
include/libssh/packet.h | 1 +
include/libssh/session.h | 6 +++++
src/curve25519.c | 19 +++----------
src/dh-gex.c | 7 +----
src/dh.c | 17 +++---------
src/ecdh.c | 8 +-----
src/ecdh_crypto.c | 12 +++------
src/ecdh_gcrypt.c | 10 +++----
src/ecdh_mbedcrypto.c | 11 +++-----
src/kex.c | 34 +++++++++++++++++++----
src/packet.c | 58 ++++++++++++++++++++++++++++++++++++++++
src/packet_cb.c | 12 +++++++++
12 files changed, 126 insertions(+), 69 deletions(-)
diff --git a/include/libssh/packet.h b/include/libssh/packet.h
index 7f10a709..f0c8cb20 100644
--- a/include/libssh/packet.h
+++ b/include/libssh/packet.h
@@ -67,6 +67,7 @@ SSH_PACKET_CALLBACK(ssh_packet_ext_info);
SSH_PACKET_CALLBACK(ssh_packet_kexdh_init);
#endif
+int ssh_packet_send_newkeys(ssh_session session);
int ssh_packet_send_unimplemented(ssh_session session, uint32_t seqnum);
int ssh_packet_parse_type(ssh_session session);
//int packet_flush(ssh_session session, int enforce_blocking);
diff --git a/include/libssh/session.h b/include/libssh/session.h
index eb14e97a..97936195 100644
--- a/include/libssh/session.h
+++ b/include/libssh/session.h
@@ -81,6 +81,12 @@ enum ssh_pending_call_e {
* sending it twice during key exchange to simplify the state machine. */
#define SSH_SESSION_FLAG_KEXINIT_SENT 4
+/* The current SSH2 session implements the "strict KEX" feature and should behave
+ * differently on SSH2_MSG_NEWKEYS. */
+#define SSH_SESSION_FLAG_KEX_STRICT 0x0010
+/* Unexpected packets have been sent while the session was still unencrypted */
+#define SSH_SESSION_FLAG_KEX_TAINTED 0x0020
+
/* codes to use with ssh_handle_packets*() */
/* Infinite timeout */
#define SSH_TIMEOUT_INFINITE -1
diff --git a/src/curve25519.c b/src/curve25519.c
index 66291b5f..4aeb4756 100644
--- a/src/curve25519.c
+++ b/src/curve25519.c
@@ -335,16 +335,10 @@ static SSH_PACKET_CALLBACK(ssh_packet_client_curve25519_reply){
}
/* Send the MSG_NEWKEYS */
- if (ssh_buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS) < 0) {
- goto error;
- }
-
- rc=ssh_packet_send(session);
+ rc = ssh_packet_send_newkeys(session);
if (rc == SSH_ERROR) {
goto error;
}
-
- SSH_LOG(SSH_LOG_DEBUG, "SSH_MSG_NEWKEYS sent");
session->dh_handshake_state = DH_STATE_NEWKEYS_SENT;
return SSH_PACKET_USED;
@@ -502,18 +496,13 @@ static SSH_PACKET_CALLBACK(ssh_packet_server_curve25519_init){
return SSH_ERROR;
}
- /* Send the MSG_NEWKEYS */
- rc = ssh_buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS);
- if (rc < 0) {
- goto error;
- }
-
session->dh_handshake_state = DH_STATE_NEWKEYS_SENT;
- rc = ssh_packet_send(session);
+
+ /* Send the MSG_NEWKEYS */
+ rc = ssh_packet_send_newkeys(session);
if (rc == SSH_ERROR) {
goto error;
}
- SSH_LOG(SSH_LOG_DEBUG, "SSH_MSG_NEWKEYS sent");
return SSH_PACKET_USED;
error:
diff --git a/src/dh-gex.c b/src/dh-gex.c
index 91617081..642a88ae 100644
--- a/src/dh-gex.c
+++ b/src/dh-gex.c
@@ -297,15 +297,10 @@ static SSH_PACKET_CALLBACK(ssh_packet_client_dhgex_reply)
}
/* Send the MSG_NEWKEYS */
- if (ssh_buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS) < 0) {
- goto error;
- }
-
- rc = ssh_packet_send(session);
+ rc = ssh_packet_send_newkeys(session);
if (rc == SSH_ERROR) {
goto error;
}
- SSH_LOG(SSH_LOG_DEBUG, "SSH_MSG_NEWKEYS sent");
session->dh_handshake_state = DH_STATE_NEWKEYS_SENT;
return SSH_PACKET_USED;
diff --git a/src/dh.c b/src/dh.c
index 011d97b3..e19e43d1 100644
--- a/src/dh.c
+++ b/src/dh.c
@@ -398,16 +398,10 @@ SSH_PACKET_CALLBACK(ssh_packet_client_dh_reply){
}
/* Send the MSG_NEWKEYS */
- if (ssh_buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS) < 0) {
- goto error;
- }
-
- rc=ssh_packet_send(session);
+ rc = ssh_packet_send_newkeys(session);
if (rc == SSH_ERROR) {
goto error;
}
-
- SSH_LOG(SSH_LOG_DEBUG, "SSH_MSG_NEWKEYS sent");
session->dh_handshake_state = DH_STATE_NEWKEYS_SENT;
return SSH_PACKET_USED;
error:
@@ -551,15 +545,12 @@ int ssh_server_dh_process_init(ssh_session session, ssh_buffer packet)
}
SSH_LOG(SSH_LOG_DEBUG, "Sent KEX_DH_[GEX]_REPLY");
- if (ssh_buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS) < 0) {
- ssh_buffer_reinit(session->out_buffer);
- goto error;
- }
session->dh_handshake_state=DH_STATE_NEWKEYS_SENT;
- if (ssh_packet_send(session) == SSH_ERROR) {
+ /* Send the MSG_NEWKEYS */
+ rc = ssh_packet_send_newkeys(session);
+ if (rc == SSH_ERROR) {
goto error;
}
- SSH_LOG(SSH_LOG_PACKET, "SSH_MSG_NEWKEYS sent");
return SSH_OK;
error:
diff --git a/src/ecdh.c b/src/ecdh.c
index e5b11ba9..af80beec 100644
--- a/src/ecdh.c
+++ b/src/ecdh.c
@@ -93,16 +93,10 @@ SSH_PACKET_CALLBACK(ssh_packet_client_ecdh_reply){
}
/* Send the MSG_NEWKEYS */
- if (ssh_buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS) < 0) {
- goto error;
- }
-
- rc=ssh_packet_send(session);
+ rc = ssh_packet_send_newkeys(session);
if (rc == SSH_ERROR) {
goto error;
}
-
- SSH_LOG(SSH_LOG_DEBUG, "SSH_MSG_NEWKEYS sent");
session->dh_handshake_state = DH_STATE_NEWKEYS_SENT;
return SSH_PACKET_USED;
diff --git a/src/ecdh_crypto.c b/src/ecdh_crypto.c
index 51084b7a..069b1372 100644
--- a/src/ecdh_crypto.c
+++ b/src/ecdh_crypto.c
@@ -619,18 +619,12 @@ SSH_PACKET_CALLBACK(ssh_packet_server_ecdh_init){
goto error;
}
- /* Send the MSG_NEWKEYS */
- rc = ssh_buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS);
- if (rc < 0) {
- goto error;
- }
-
session->dh_handshake_state = DH_STATE_NEWKEYS_SENT;
- rc = ssh_packet_send(session);
- if (rc == SSH_ERROR){
+ /* Send the MSG_NEWKEYS */
+ rc = ssh_packet_send_newkeys(session);
+ if (rc == SSH_ERROR) {
goto error;
}
- SSH_LOG(SSH_LOG_DEBUG, "SSH_MSG_NEWKEYS sent");
return SSH_PACKET_USED;
error:
diff --git a/src/ecdh_gcrypt.c b/src/ecdh_gcrypt.c
index 235f2904..3d9d426f 100644
--- a/src/ecdh_gcrypt.c
+++ b/src/ecdh_gcrypt.c
@@ -372,17 +372,13 @@ SSH_PACKET_CALLBACK(ssh_packet_server_ecdh_init){
goto out;
}
-
+ session->dh_handshake_state = DH_STATE_NEWKEYS_SENT;
/* Send the MSG_NEWKEYS */
- rc = ssh_buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS);
- if (rc != SSH_OK) {
+ rc = ssh_packet_send_newkeys(session);
+ if (rc == SSH_ERROR) {
goto out;
}
- session->dh_handshake_state = DH_STATE_NEWKEYS_SENT;
- rc = ssh_packet_send(session);
- SSH_LOG(SSH_LOG_DEBUG, "SSH_MSG_NEWKEYS sent");
-
out:
gcry_sexp_release(param);
gcry_sexp_release(key);
diff --git a/src/ecdh_mbedcrypto.c b/src/ecdh_mbedcrypto.c
index cfe017a0..dda73922 100644
--- a/src/ecdh_mbedcrypto.c
+++ b/src/ecdh_mbedcrypto.c
@@ -318,16 +318,13 @@ SSH_PACKET_CALLBACK(ssh_packet_server_ecdh_init){
goto out;
}
- rc = ssh_buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS);
- if (rc < 0) {
- rc = SSH_ERROR;
+ session->dh_handshake_state = DH_STATE_NEWKEYS_SENT;
+ /* Send the MSG_NEWKEYS */
+ rc = ssh_packet_send_newkeys(session);
+ if (rc == SSH_ERROR) {
goto out;
}
- session->dh_handshake_state = DH_STATE_NEWKEYS_SENT;
- rc = ssh_packet_send(session);
- SSH_LOG(SSH_LOG_DEBUG, "SSH_MSG_NEWKEYS sent");
-
out:
mbedtls_ecp_group_free(&grp);
if (rc == SSH_ERROR) {
diff --git a/src/kex.c b/src/kex.c
index b9455d2d..3818297b 100644
--- a/src/kex.c
+++ b/src/kex.c
@@ -188,6 +188,9 @@
/* RFC 8308 */
#define KEX_EXTENSION_CLIENT "ext-info-c"
+/* Strict kex mitigation against CVE-2023-48795 */
+#define KEX_STRICT_CLIENT "kex-strict-c-v00@openssh.com"
+#define KEX_STRICT_SERVER "kex-strict-s-v00@openssh.com"
/* Allowed algorithms in FIPS mode */
#define FIPS_ALLOWED_CIPHERS "aes256-gcm@openssh.com,"\
@@ -516,6 +519,27 @@ SSH_PACKET_CALLBACK(ssh_packet_kexinit)
session->first_kex_follows_guess_wrong ? "wrong" : "right");
}
+ /*
+ * handle the "strict KEX" feature. If supported by peer, then set up the
+ * flag and verify packet sequence numbers.
+ */
+ if (server_kex) {
+ ok = ssh_match_group(crypto->client_kex.methods[SSH_KEX],
+ KEX_STRICT_CLIENT);
+ if (ok) {
+ SSH_LOG(SSH_LOG_DEBUG, "Client supports strict kex, enabling.");
+ session->flags |= SSH_SESSION_FLAG_KEX_STRICT;
+ }
+ } else {
+ /* client kex */
+ ok = ssh_match_group(crypto->server_kex.methods[SSH_KEX],
+ KEX_STRICT_SERVER);
+ if (ok) {
+ SSH_LOG(SSH_LOG_DEBUG, "Server supports strict kex, enabling.");
+ session->flags |= SSH_SESSION_FLAG_KEX_STRICT;
+ }
+ }
+
if (server_kex) {
/*
* If client sent a ext-info-c message in the kex list, it supports
@@ -792,21 +816,21 @@ int ssh_set_client_kex(ssh_session session)
return SSH_OK;
}
- /* Here we append ext-info-c to the list of kex algorithms */
+ /* Here we append ext-info-c and kex-strict-c-v00@openssh.com to the list of kex algorithms */
kex = client->methods[SSH_KEX];
len = strlen(kex);
- if (len + strlen(KEX_EXTENSION_CLIENT) + 2 < len) {
+ /* Comma, comma, nul byte */
+ kex_len = len + 1 + strlen(KEX_EXTENSION_CLIENT) + 1 + strlen(KEX_STRICT_CLIENT ) + 1;
+ if (kex_len >= MAX_PACKET_LEN) {
/* Overflow */
return SSH_ERROR;
}
- kex_len = len + strlen(KEX_EXTENSION_CLIENT) + 2; /* comma, NULL */
kex_tmp = realloc(kex, kex_len);
if (kex_tmp == NULL) {
- free(kex);
ssh_set_error_oom(session);
return SSH_ERROR;
}
- snprintf(kex_tmp + len, kex_len - len, ",%s", KEX_EXTENSION_CLIENT);
+ snprintf(kex_tmp + len, kex_len - len, ",%s,%s", KEX_EXTENSION_CLIENT, KEX_STRICT_CLIENT);
client->methods[SSH_KEX] = kex_tmp;
return SSH_OK;
diff --git a/src/packet.c b/src/packet.c
index eb7eb42a..ea73f9ad 100644
--- a/src/packet.c
+++ b/src/packet.c
@@ -1314,6 +1314,19 @@ ssh_packet_socket_callback(const void *data, size_t receivedlen, void *user)
}
#endif /* WITH_ZLIB */
payloadsize = ssh_buffer_get_len(session->in_buffer);
+ if (session->recv_seq == UINT32_MAX) {
+ /* Overflowing sequence numbers is always fishy */
+ if (crypto == NULL) {
+ /* don't allow sequence number overflow when unencrypted */
+ ssh_set_error(session,
+ SSH_FATAL,
+ "Incoming sequence number overflow");
+ goto error;
+ } else {
+ SSH_LOG(SSH_LOG_WARNING,
+ "Incoming sequence number overflow");
+ }
+ }
session->recv_seq++;
if (crypto != NULL) {
struct ssh_cipher_struct *cipher = NULL;
@@ -1354,6 +1379,9 @@ ssh_packet_socket_callback(const void *data, size_t receivedlen, void *user)
session->in_packet.type);
goto error;
case SSH_PACKET_UNKNOWN:
+ if (crypto == NULL) {
+ session->flags |= SSH_SESSION_FLAG_KEX_TAINTED;
+ }
ssh_packet_send_unimplemented(session, session->recv_seq - 1);
break;
}
@@ -1529,7 +1557,33 @@ void ssh_packet_process(ssh_session session, uint8_t type)
SSH_LOG(SSH_LOG_RARE, "Failed to send unimplemented: %s",
ssh_get_error(session));
}
+ if (session->current_crypto == NULL) {
+ session->flags |= SSH_SESSION_FLAG_KEX_TAINTED;
+ }
+ }
+}
+
+/** @internal
+ * @brief sends a SSH_MSG_NEWKEYS when enabling the new negotiated ciphers
+ * @param session the SSH session
+ * @return SSH_ERROR on error, else SSH_OK
+ */
+int ssh_packet_send_newkeys(ssh_session session)
+{
+ int rc;
+
+ /* Send the MSG_NEWKEYS */
+ rc = ssh_buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS);
+ if (rc < 0) {
+ return rc;
}
+
+ rc = ssh_packet_send(session);
+ if (rc == SSH_ERROR) {
+ return rc;
+ }
+ SSH_LOG(SSH_LOG_DEBUG, "SSH_MSG_NEWKEYS sent");
+ return rc;
}
/** @internal
@@ -1842,6 +1896,10 @@ int ssh_packet_send(ssh_session session)
if (rc == SSH_OK && type == SSH2_MSG_NEWKEYS) {
struct ssh_iterator *it;
+ if (session->flags & SSH_SESSION_FLAG_KEX_STRICT) {
+ /* reset packet sequence number when running in strict kex mode */
+ session->send_seq = 0;
+ }
for (it = ssh_list_get_iterator(session->out_queue);
it != NULL;
it = ssh_list_get_iterator(session->out_queue)) {
diff --git a/src/packet_cb.c b/src/packet_cb.c
index 0ecf8771..2f364c26 100644
--- a/src/packet_cb.c
+++ b/src/packet_cb.c
@@ -115,6 +115,18 @@ SSH_PACKET_CALLBACK(ssh_packet_newkeys){
goto error;
}
+ if (session->flags & SSH_SESSION_FLAG_KEX_STRICT) {
+ /* reset packet sequence number when running in strict kex mode */
+ session->recv_seq = 0;
+ /* Check that we aren't tainted */
+ if (session->flags & SSH_SESSION_FLAG_KEX_TAINTED) {
+ ssh_set_error(session,
+ SSH_FATAL,
+ "Received unexpected packets in strict KEX mode.");
+ goto error;
+ }
+ }
+
if(session->server){
/* server things are done in server.c */
session->dh_handshake_state=DH_STATE_FINISHED;
--
2.41.0
From 0870c8db28be9eb457ee3d4f9a168959d9507efd Mon Sep 17 00:00:00 2001
From: Aris Adamantiadis <aris@0xbadc0de.be>
Date: Tue, 12 Dec 2023 23:30:26 +0100
Subject: [PATCH 2/4] CVE-2023-48795: Server side mitigations
Signed-off-by: Aris Adamantiadis <aris@0xbadc0de.be>
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
---
include/libssh/kex.h | 1 +
src/kex.c | 46 ++++++++++++++++++++++++++++++++++----------
src/server.c | 8 +++++++-
3 files changed, 44 insertions(+), 11 deletions(-)
diff --git a/include/libssh/kex.h b/include/libssh/kex.h
index ede7fa8a..ba98fded 100644
--- a/include/libssh/kex.h
+++ b/include/libssh/kex.h
@@ -40,6 +40,7 @@ SSH_PACKET_CALLBACK(ssh_packet_kexinit);
int ssh_send_kex(ssh_session session);
void ssh_list_kex(struct ssh_kex_struct *kex);
int ssh_set_client_kex(ssh_session session);
+int ssh_kex_append_extensions(ssh_session session, struct ssh_kex_struct *pkex);
int ssh_kex_select_methods(ssh_session session);
int ssh_verify_existing_algo(enum ssh_kex_types_e algo, const char *name);
char *ssh_keep_known_algos(enum ssh_kex_types_e algo, const char *list);
diff --git a/src/kex.c b/src/kex.c
index 3818297b..9ad671db 100644
--- a/src/kex.c
+++ b/src/kex.c
@@ -763,11 +763,8 @@ int ssh_set_client_kex(ssh_session session)
{
struct ssh_kex_struct *client = &session->next_crypto->client_kex;
const char *wanted;
- char *kex = NULL;
- char *kex_tmp = NULL;
int ok;
int i;
- size_t kex_len, len;
/* Skip if already set, for example for the rekey or when we do the guessing
* it could have been already used to make some protocol decisions. */
@@ -816,11 +813,33 @@ int ssh_set_client_kex(ssh_session session)
return SSH_OK;
}
- /* Here we append ext-info-c and kex-strict-c-v00@openssh.com to the list of kex algorithms */
- kex = client->methods[SSH_KEX];
+ ok = ssh_kex_append_extensions(session, client);
+ if (ok != SSH_OK){
+ return ok;
+ }
+
+ return SSH_OK;
+}
+
+int ssh_kex_append_extensions(ssh_session session, struct ssh_kex_struct *pkex)
+{
+ char *kex = NULL;
+ char *kex_tmp = NULL;
+ size_t kex_len, len;
+
+ /* Here we append ext-info-c and kex-strict-c-v00@openssh.com for client
+ * and kex-strict-s-v00@openssh.com for server to the list of kex algorithms
+ */
+ kex = pkex->methods[SSH_KEX];
len = strlen(kex);
- /* Comma, comma, nul byte */
- kex_len = len + 1 + strlen(KEX_EXTENSION_CLIENT) + 1 + strlen(KEX_STRICT_CLIENT ) + 1;
+ if (session->server) {
+ /* Comma, nul byte */
+ kex_len = len + 1 + strlen(KEX_STRICT_SERVER) + 1;
+ } else {
+ /* Comma, comma, nul byte */
+ kex_len = len + 1 + strlen(KEX_EXTENSION_CLIENT) + 1 +
+ strlen(KEX_STRICT_CLIENT) + 1;
+ }
if (kex_len >= MAX_PACKET_LEN) {
/* Overflow */
return SSH_ERROR;
@@ -830,9 +849,16 @@ int ssh_set_client_kex(ssh_session session)
ssh_set_error_oom(session);
return SSH_ERROR;
}
- snprintf(kex_tmp + len, kex_len - len, ",%s,%s", KEX_EXTENSION_CLIENT, KEX_STRICT_CLIENT);
- client->methods[SSH_KEX] = kex_tmp;
-
+ if (session->server){
+ snprintf(kex_tmp + len, kex_len - len, ",%s", KEX_STRICT_SERVER);
+ } else {
+ snprintf(kex_tmp + len,
+ kex_len - len,
+ ",%s,%s",
+ KEX_EXTENSION_CLIENT,
+ KEX_STRICT_CLIENT);
+ }
+ pkex->methods[SSH_KEX] = kex_tmp;
return SSH_OK;
}
diff --git a/src/server.c b/src/server.c
index dc070a73..70b90899 100644
--- a/src/server.c
+++ b/src/server.c
@@ -195,7 +195,13 @@ int server_set_kex(ssh_session session)
}
}
- return 0;
+ /* Do not append the extensions during rekey */
+ if (session->flags & SSH_SESSION_FLAG_AUTHENTICATED) {
+ return SSH_OK;
+ }
+
+ rc = ssh_kex_append_extensions(session, server);
+ return rc;
}
int ssh_server_init_kex(ssh_session session) {
--
2.41.0
From 5846e57538c750c5ce67df887d09fa99861c79c6 Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Thu, 14 Dec 2023 12:22:01 +0100
Subject: [PATCH 3/4] CVE-2023-48795: Strip extensions from both kex lists for
matching
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
---
src/kex.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/src/kex.c b/src/kex.c
index 9ad671db..fbc70cf4 100644
--- a/src/kex.c
+++ b/src/kex.c
@@ -961,11 +961,19 @@ int ssh_kex_select_methods (ssh_session session)
enum ssh_key_exchange_e kex_type;
int i;
- /* Here we should drop the ext-info-c from the list so we avoid matching.
+ /* Here we should drop the extensions from the list so we avoid matching.
* it. We added it to the end, so we can just truncate the string here */
- ext_start = strstr(client->methods[SSH_KEX], ","KEX_EXTENSION_CLIENT);
- if (ext_start != NULL) {
- ext_start[0] = '\0';
+ if (session->client) {
+ ext_start = strstr(client->methods[SSH_KEX], "," KEX_EXTENSION_CLIENT);
+ if (ext_start != NULL) {
+ ext_start[0] = '\0';
+ }
+ }
+ if (session->server) {
+ ext_start = strstr(server->methods[SSH_KEX], "," KEX_STRICT_SERVER);
+ if (ext_start != NULL) {
+ ext_start[0] = '\0';
+ }
}
for (i = 0; i < SSH_KEX_METHODS; i++) {
--
2.41.0
From 89df759200d31fc79fbbe213d8eda0d329eebf6d Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Thu, 14 Dec 2023 12:47:48 +0100
Subject: [PATCH 4/4] CVE-2023-48795: tests: Adjust calculation to strict kex
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
---
tests/client/torture_rekey.c | 55 ++++++++++++++++++++----------------
1 file changed, 31 insertions(+), 24 deletions(-)
diff --git a/tests/client/torture_rekey.c b/tests/client/torture_rekey.c
index ccd5ae2c..57e03e3f 100644
--- a/tests/client/torture_rekey.c
+++ b/tests/client/torture_rekey.c
@@ -148,6 +148,29 @@ static void torture_rekey_default(void **state)
ssh_disconnect(s->ssh.session);
}
+static void sanity_check_session(void **state)
+{
+ struct torture_state *s = *state;
+ struct ssh_crypto_struct *c = NULL;
+
+ c = s->ssh.session->current_crypto;
+ assert_non_null(c);
+ assert_int_equal(c->in_cipher->max_blocks,
+ bytes / c->in_cipher->blocksize);
+ assert_int_equal(c->out_cipher->max_blocks,
+ bytes / c->out_cipher->blocksize);
+ /* when strict kex is used, the newkeys reset the sequence number */
+ if ((s->ssh.session->flags & SSH_SESSION_FLAG_KEX_STRICT) != 0) {
+ assert_int_equal(c->out_cipher->packets, s->ssh.session->send_seq);
+ assert_int_equal(c->in_cipher->packets, s->ssh.session->recv_seq);
+ } else {
+ /* Otherwise we have less encrypted packets than transferred
+ * (first are not encrypted) */
+ assert_true(c->out_cipher->packets < s->ssh.session->send_seq);
+ assert_true(c->in_cipher->packets < s->ssh.session->recv_seq);
+ }
+}
+
/* We lower the rekey limits manually and check that the rekey
* really happens when sending data
*/
@@ -166,16 +189,10 @@ static void torture_rekey_send(void **state)
rc = ssh_connect(s->ssh.session);
assert_ssh_return_code(s->ssh.session, rc);
- /* The blocks limit is set correctly */
- c = s->ssh.session->current_crypto;
- assert_int_equal(c->in_cipher->max_blocks,
- bytes / c->in_cipher->blocksize);
- assert_int_equal(c->out_cipher->max_blocks,
- bytes / c->out_cipher->blocksize);
- /* We should have less encrypted packets than transfered (first are not encrypted) */
- assert_true(c->out_cipher->packets < s->ssh.session->send_seq);
- assert_true(c->in_cipher->packets < s->ssh.session->recv_seq);
+ sanity_check_session(state);
/* Copy the initial secret hash = session_id so we know we changed keys later */
+ c = s->ssh.session->current_crypto;
+ assert_non_null(c);
secret_hash = malloc(c->digest_len);
assert_non_null(secret_hash);
memcpy(secret_hash, c->secret_hash, c->digest_len);
@@ -468,15 +480,10 @@ static void torture_rekey_different_kex(void **state)
assert_ssh_return_code(s->ssh.session, rc);
/* The blocks limit is set correctly */
- c = s->ssh.session->current_crypto;
- assert_int_equal(c->in_cipher->max_blocks,
- bytes / c->in_cipher->blocksize);
- assert_int_equal(c->out_cipher->max_blocks,
- bytes / c->out_cipher->blocksize);
- /* We should have less encrypted packets than transfered (first are not encrypted) */
- assert_true(c->out_cipher->packets < s->ssh.session->send_seq);
- assert_true(c->in_cipher->packets < s->ssh.session->recv_seq);
+ sanity_check_session(state);
/* Copy the initial secret hash = session_id so we know we changed keys later */
+ c = s->ssh.session->current_crypto;
+ assert_non_null(c);
secret_hash = malloc(c->digest_len);
assert_non_null(secret_hash);
memcpy(secret_hash, c->secret_hash, c->digest_len);
--
2.41.0
diff -up libssh-0.10.4/src/packet.c.CVE-2023-48795.patch libssh-0.10.4/src/packet.c
--- libssh-0.10.4/src/packet.c.CVE-2023-48795.patch 2024-01-09 05:46:53.064383034 +0100
+++ libssh-0.10.4/src/packet.c 2024-01-09 05:48:28.360340184 +0100
@@ -1345,6 +1345,19 @@ size_t ssh_packet_socket_callback(const
"packet: read type %hhd [len=%d,padding=%hhd,comp=%d,payload=%d]",
session->in_packet.type, packet_len, padding, compsize, payloadsize);
+ if (crypto == NULL) {
+ /* In strict kex, only a few packets are allowed. Taint the session
+ * if we received packets that are normally allowed but to be
+ * refused if we are in strict kex when KEX is over.
+ */
+ uint8_t type = session->in_packet.type;
+
+ if (type != SSH2_MSG_KEXINIT && type != SSH2_MSG_NEWKEYS &&
+ (type < SSH2_MSG_KEXDH_INIT ||
+ type > SSH2_MSG_KEX_DH_GEX_REQUEST)) {
+ session->flags |= SSH_SESSION_FLAG_KEX_TAINTED;
+ }
+ }
/* Check if the packet is expected */
filter_result = ssh_packet_incoming_filter(session);
diff -up libssh-0.10.4/tests/client/torture_rekey.c.CVE-2023-48795.patch libssh-0.10.4/tests/client/torture_rekey.c
--- libssh-0.10.4/tests/client/torture_rekey.c.CVE-2023-48795.patch 2024-01-09 18:48:16.684366049 +0100
+++ libssh-0.10.4/tests/client/torture_rekey.c 2024-01-09 18:50:49.135897268 +0100
@@ -290,14 +290,10 @@ static void torture_rekey_recv(void **st
mode_t mask;
int rc;
- /* The blocks limit is set correctly */
- c = s->ssh.session->current_crypto;
- assert_int_equal(c->in_cipher->max_blocks, bytes / c->in_cipher->blocksize);
- assert_int_equal(c->out_cipher->max_blocks, bytes / c->out_cipher->blocksize);
- /* We should have less encrypted packets than transfered (first are not encrypted) */
- assert_true(c->out_cipher->packets < s->ssh.session->send_seq);
- assert_true(c->in_cipher->packets < s->ssh.session->recv_seq);
+ sanity_check_session(state);
/* Copy the initial secret hash = session_id so we know we changed keys later */
+ c = s->ssh.session->current_crypto;
+ assert_non_null(c);
secret_hash = malloc(c->digest_len);
assert_non_null(secret_hash);
memcpy(secret_hash, c->secret_hash, c->digest_len);

82
SOURCES/auth_bypass.patch
Unescape View File

@ -0,0 +1,82 @@
diff --color -ru ../libssh-0.10.4/src/pki_crypto.c ./src/pki_crypto.c
--- ../libssh-0.10.4/src/pki_crypto.c 2023-04-27 13:24:03.105744519 +0200
+++ ./src/pki_crypto.c 2023-04-27 13:30:24.016756496 +0200
@@ -3186,8 +3186,12 @@
unsigned char *raw_sig_data = NULL;
unsigned int raw_sig_len;
+ /* Function return code
+ * Do not change this variable throughout the function until the signature
+ * is successfully verified!
+ */
int rc = SSH_ERROR;
- int evp_rc;
+ int ok;
if (pubkey == NULL || ssh_key_is_private(pubkey) || input == NULL ||
signature == NULL || (signature->raw_sig == NULL
@@ -3202,8 +3206,8 @@
}
/* Check if public key and hash type are compatible */
- rc = pki_key_check_hash_compatible(pubkey, signature->hash_type);
- if (rc != SSH_OK) {
+ ok = pki_key_check_hash_compatible(pubkey, signature->hash_type);
+ if (ok != SSH_OK) {
return SSH_ERROR;
}
@@ -3248,8 +3252,8 @@
}
/* Verify the signature */
- evp_rc = EVP_DigestVerifyInit(ctx, NULL, md, NULL, pkey);
- if (evp_rc != 1){
+ ok = EVP_DigestVerifyInit(ctx, NULL, md, NULL, pkey);
+ if (ok != 1){
SSH_LOG(SSH_LOG_TRACE,
"EVP_DigestVerifyInit() failed: %s",
ERR_error_string(ERR_get_error(), NULL));
@@ -3257,32 +3261,30 @@
}
#ifdef HAVE_OPENSSL_EVP_DIGESTVERIFY
- evp_rc = EVP_DigestVerify(ctx, raw_sig_data, raw_sig_len, input, input_len);
+ ok = EVP_DigestVerify(ctx, raw_sig_data, raw_sig_len, input, input_len);
#else
- evp_rc = EVP_DigestVerifyUpdate(ctx, input, input_len);
- if (evp_rc != 1) {
+ ok = EVP_DigestVerifyUpdate(ctx, input, input_len);
+ if (ok != 1) {
SSH_LOG(SSH_LOG_TRACE,
"EVP_DigestVerifyUpdate() failed: %s",
ERR_error_string(ERR_get_error(), NULL));
goto out;
}
- evp_rc = EVP_DigestVerifyFinal(ctx, raw_sig_data, raw_sig_len);
+ ok = EVP_DigestVerifyFinal(ctx, raw_sig_data, raw_sig_len);
#endif
- if (evp_rc == 1) {
- SSH_LOG(SSH_LOG_TRACE, "Signature valid");
- rc = SSH_OK;
- } else {
+ if (ok != 1) {
SSH_LOG(SSH_LOG_TRACE,
"Signature invalid: %s",
ERR_error_string(ERR_get_error(), NULL));
- rc = SSH_ERROR;
+ goto out;
}
+ SSH_LOG(SSH_LOG_TRACE, "Signature valid");
+ rc = SSH_OK;
+
out:
- if (ctx != NULL) {
- EVP_MD_CTX_free(ctx);
- }
+ EVP_MD_CTX_free(ctx);
EVP_PKEY_free(pkey);
return rc;
}

23
SOURCES/coverity_scan.patch
Unescape View File

@ -0,0 +1,23 @@
diff --git a/src/dh_crypto.c b/src/dh_crypto.c
index a847c6a2..1eb94307 100644
--- a/src/dh_crypto.c
+++ b/src/dh_crypto.c
@@ -341,8 +341,16 @@ int ssh_dh_set_parameters(struct dh_ctx *ctx,
goto done;
}
- OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_P, modulus);
- OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_G, generator);
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_P, modulus);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto done;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_G, generator);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto done;
+ }
params = OSSL_PARAM_BLD_to_param(param_bld);
if (params == NULL) {
OSSL_PARAM_BLD_free(param_bld);

228
SOURCES/covscan23.patch
Unescape View File

@ -0,0 +1,228 @@
diff --color -ru ../libssh-0.10.4/src/buffer.c ./src/buffer.c
--- ../libssh-0.10.4/src/buffer.c 2023-05-03 12:22:40.304114511 +0200
+++ ./src/buffer.c 2023-05-03 12:24:11.578110236 +0200
@@ -747,7 +747,8 @@
*/
int ssh_buffer_validate_length(struct ssh_buffer_struct *buffer, size_t len)
{
- if (buffer->pos + len < len || buffer->pos + len > buffer->used) {
+ if (buffer == NULL || buffer->pos + len < len ||
+ buffer->pos + len > buffer->used) {
return SSH_ERROR;
}
diff --color -ru ../libssh-0.10.4/src/gssapi.c ./src/gssapi.c
--- ../libssh-0.10.4/src/gssapi.c 2023-05-03 12:22:40.356115078 +0200
+++ ./src/gssapi.c 2023-05-03 12:24:11.566110105 +0200
@@ -444,11 +444,18 @@
hexa = ssh_get_hexa(output_token.value, output_token.length);
SSH_LOG(SSH_LOG_PACKET, "GSSAPI: sending token %s",hexa);
SAFE_FREE(hexa);
- ssh_buffer_pack(session->out_buffer,
- "bdP",
- SSH2_MSG_USERAUTH_GSSAPI_TOKEN,
- output_token.length,
- (size_t)output_token.length, output_token.value);
+ rc = ssh_buffer_pack(session->out_buffer,
+ "bdP",
+ SSH2_MSG_USERAUTH_GSSAPI_TOKEN,
+ output_token.length,
+ (size_t)output_token.length, output_token.value);
+ if (rc != SSH_OK) {
+ ssh_set_error_oom(session);
+ ssh_auth_reply_default(session, 0);
+ ssh_gssapi_free(session);
+ session->gssapi = NULL;
+ return SSH_PACKET_USED;
+ }
ssh_packet_send(session);
}
@@ -857,6 +864,7 @@
}
SSH_PACKET_CALLBACK(ssh_packet_userauth_gssapi_response){
+ int rc;
ssh_string oid_s;
gss_uint32 maj_stat, min_stat;
gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER;
@@ -908,11 +916,15 @@
hexa = ssh_get_hexa(output_token.value, output_token.length);
SSH_LOG(SSH_LOG_PACKET, "GSSAPI: sending token %s", hexa);
SAFE_FREE(hexa);
- ssh_buffer_pack(session->out_buffer,
- "bdP",
- SSH2_MSG_USERAUTH_GSSAPI_TOKEN,
- output_token.length,
- (size_t)output_token.length, output_token.value);
+ rc = ssh_buffer_pack(session->out_buffer,
+ "bdP",
+ SSH2_MSG_USERAUTH_GSSAPI_TOKEN,
+ output_token.length,
+ (size_t)output_token.length, output_token.value);
+ if (rc != SSH_OK) {
+ ssh_set_error_oom(session);
+ goto error;
+ }
ssh_packet_send(session);
session->auth.state = SSH_AUTH_STATE_GSSAPI_TOKEN;
}
@@ -975,6 +987,7 @@
}
SSH_PACKET_CALLBACK(ssh_packet_userauth_gssapi_token_client){
+ int rc;
ssh_string token;
char *hexa;
OM_uint32 maj_stat, min_stat;
@@ -1027,11 +1040,15 @@
hexa = ssh_get_hexa(output_token.value, output_token.length);
SSH_LOG(SSH_LOG_PACKET, "GSSAPI: sending token %s",hexa);
SAFE_FREE(hexa);
- ssh_buffer_pack(session->out_buffer,
- "bdP",
- SSH2_MSG_USERAUTH_GSSAPI_TOKEN,
- output_token.length,
- (size_t)output_token.length, output_token.value);
+ rc = ssh_buffer_pack(session->out_buffer,
+ "bdP",
+ SSH2_MSG_USERAUTH_GSSAPI_TOKEN,
+ output_token.length,
+ (size_t)output_token.length, output_token.value);
+ if (rc != SSH_OK) {
+ ssh_set_error_oom(session);
+ goto error;
+ }
ssh_packet_send(session);
}
diff --color -ru ../libssh-0.10.4/src/options.c ./src/options.c
--- ../libssh-0.10.4/src/options.c 2023-05-03 12:22:40.342114926 +0200
+++ ./src/options.c 2023-05-03 12:24:11.582110280 +0200
@@ -614,7 +614,9 @@
}
i = strtol(q, &p, 10);
if (q == p) {
+ SSH_LOG(SSH_LOG_DEBUG, "No port number was parsed");
SAFE_FREE(q);
+ return -1;
}
SAFE_FREE(q);
if (i <= 0) {
@@ -816,7 +818,9 @@
}
i = strtol(q, &p, 10);
if (q == p) {
+ SSH_LOG(SSH_LOG_DEBUG, "No log verbositiy was parsed");
SAFE_FREE(q);
+ return -1;
}
SAFE_FREE(q);
if (i < 0) {
@@ -2035,7 +2039,9 @@
}
i = strtol(q, &p, 10);
if (q == p) {
- SAFE_FREE(q);
+ SSH_LOG(SSH_LOG_DEBUG, "No bind port was parsed");
+ SAFE_FREE(q);
+ return -1;
}
SAFE_FREE(q);
@@ -2062,7 +2068,9 @@
}
i = strtol(q, &p, 10);
if (q == p) {
- SAFE_FREE(q);
+ SSH_LOG(SSH_LOG_DEBUG, "No log verbositiy was parsed");
+ SAFE_FREE(q);
+ return -1;
}
SAFE_FREE(q);
diff --color -ru ../libssh-0.10.4/src/pki_container_openssh.c ./src/pki_container_openssh.c
--- ../libssh-0.10.4/src/pki_container_openssh.c 2023-05-03 12:22:40.314114620 +0200
+++ ./src/pki_container_openssh.c 2023-05-03 12:24:11.566110105 +0200
@@ -630,7 +630,11 @@
goto error;
}
- ssh_buffer_pack(kdf_buf, "Sd", salt, rounds);
+ rc = ssh_buffer_pack(kdf_buf, "Sd", salt, rounds);
+ if (rc != SSH_OK) {
+ SSH_BUFFER_FREE(kdf_buf);
+ goto error;
+ }
kdf_options = ssh_string_new(ssh_buffer_get_len(kdf_buf));
if (kdf_options == NULL){
SSH_BUFFER_FREE(kdf_buf);
diff --color -ru ../libssh-0.10.4/tests/unittests/torture_options.c ./tests/unittests/torture_options.c
--- ../libssh-0.10.4/tests/unittests/torture_options.c 2023-05-03 12:22:40.343114937 +0200
+++ ./tests/unittests/torture_options.c 2023-05-03 12:24:11.587110335 +0200
@@ -319,6 +319,7 @@
rc = ssh_options_set(session, SSH_OPTIONS_PORT_STR, "five");
assert_true(rc == -1);
+ assert_int_not_equal(session->opts.port, 0);
rc = ssh_options_set(session, SSH_OPTIONS_PORT, NULL);
assert_true(rc == -1);
@@ -1496,6 +1497,26 @@
ssh_list_free(awaited_list);
}
+static void torture_options_set_verbosity (void **state)
+{
+ ssh_session session = *state;
+ int rc, new_level;
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_LOG_VERBOSITY_STR,
+ "3");
+ assert_int_equal(rc, SSH_OK);
+ new_level = ssh_get_log_level();
+ assert_int_equal(new_level, SSH_LOG_PACKET);
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_LOG_VERBOSITY_STR,
+ "datsun");
+ assert_int_equal(rc, -1);
+ new_level = ssh_get_log_level();
+ assert_int_not_equal(new_level, 0);
+}
+
#ifdef WITH_SERVER
const char template[] = "temp_dir_XXXXXX";
@@ -1750,6 +1771,10 @@
rc = ssh_bind_options_set(bind, SSH_BIND_OPTIONS_BINDPORT_STR, "23");
assert_int_equal(rc, 0);
assert_int_equal(bind->bindport, 23);
+
+ rc = ssh_bind_options_set(bind, SSH_BIND_OPTIONS_BINDPORT_STR, "twentythree");
+ assert_int_equal(rc, -1);
+ assert_int_not_equal(bind->bindport, 0);
}
static void torture_bind_options_log_verbosity(void **state)
@@ -1799,6 +1824,11 @@
new_level = ssh_get_log_level();
assert_int_equal(new_level, SSH_LOG_PACKET);
+ rc = ssh_bind_options_set(bind, SSH_BIND_OPTIONS_LOG_VERBOSITY_STR, "verbosity");
+ assert_int_equal(rc, -1);
+ new_level = ssh_get_log_level();
+ assert_int_not_equal(new_level, 0);
+
rc = ssh_set_log_level(previous_level);
assert_int_equal(rc, SSH_OK);
}
@@ -2297,6 +2327,7 @@
cmocka_unit_test_setup_teardown(torture_options_caret_sign,
setup, teardown),
cmocka_unit_test_setup_teardown(torture_options_apply, setup, teardown),
+ cmocka_unit_test_setup_teardown(torture_options_set_verbosity, setup, teardown),
};
#ifdef WITH_SERVER

57
SOURCES/covscan23_1.patch
Unescape View File

@ -0,0 +1,57 @@
File ../libssh-0.10.4/.git is a regular file while file ./.git is a directory
diff --color -ru ../libssh-0.10.4/src/sftp.c ./src/sftp.c
--- ../libssh-0.10.4/src/sftp.c 2023-05-22 12:45:48.383509085 +0200
+++ ./src/sftp.c 2023-05-22 12:54:31.004037650 +0200
@@ -1755,6 +1755,10 @@
int sftp_close(sftp_file file){
int err = SSH_NO_ERROR;
+ if (file == NULL) {
+ return err;
+ }
+
SAFE_FREE(file->name);
if (file->handle){
err = sftp_handle_close(file->sftp,file->handle);
@@ -1917,7 +1921,7 @@
/* Read from a file using an opened sftp file handle. */
ssize_t sftp_read(sftp_file handle, void *buf, size_t count) {
- sftp_session sftp = handle->sftp;
+ sftp_session sftp;
sftp_message msg = NULL;
sftp_status_message status;
ssh_string datastring;
@@ -1926,6 +1930,11 @@
uint32_t id;
int rc;
+ if (handle == NULL) {
+ return -1;
+ }
+ sftp = handle->sftp;
+
if (handle->eof) {
return 0;
}
@@ -2147,7 +2156,7 @@
}
ssize_t sftp_write(sftp_file file, const void *buf, size_t count) {
- sftp_session sftp = file->sftp;
+ sftp_session sftp;
sftp_message msg = NULL;
sftp_status_message status;
ssh_buffer buffer;
@@ -2156,6 +2165,11 @@
size_t packetlen;
int rc;
+ if (file == NULL) {
+ return -1;
+ }
+ sftp = file->sftp;
+
buffer = ssh_buffer_new();
if (buffer == NULL) {
ssh_set_error_oom(sftp->session);

105
SOURCES/enable_sk_keys_by_config.patch
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@ -0,0 +1,105 @@
diff --git a/src/kex.c b/src/kex.c
index 1155b9c7..528cb182 100644
--- a/src/kex.c
+++ b/src/kex.c
@@ -101,12 +101,19 @@
#ifdef HAVE_ECDH
#define ECDH "ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,"
-#define EC_HOSTKEYS "ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,"
-#define EC_PUBLIC_KEY_ALGORITHMS "ecdsa-sha2-nistp521-cert-v01@openssh.com," \
+#define EC_HOSTKEYS "ecdsa-sha2-nistp521," \
+ "ecdsa-sha2-nistp384," \
+ "ecdsa-sha2-nistp256,"
+#define EC_SK_HOSTKEYS "sk-ecdsa-sha2-nistp256@openssh.com,"
+#define EC_FIPS_PUBLIC_KEY_ALGOS "ecdsa-sha2-nistp521-cert-v01@openssh.com," \
"ecdsa-sha2-nistp384-cert-v01@openssh.com," \
"ecdsa-sha2-nistp256-cert-v01@openssh.com,"
+#define EC_PUBLIC_KEY_ALGORITHMS EC_FIPS_PUBLIC_KEY_ALGOS \
+ "sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,"
#else
#define EC_HOSTKEYS ""
+#define EC_SK_HOSTKEYS ""
+#define EC_FIPS_PUBLIC_KEY_ALGOS ""
#define EC_PUBLIC_KEY_ALGORITHMS ""
#define ECDH ""
#endif /* HAVE_ECDH */
@@ -127,16 +134,21 @@
#define HOSTKEYS "ssh-ed25519," \
EC_HOSTKEYS \
+ "sk-ssh-ed25519@openssh.com," \
+ EC_SK_HOSTKEYS \
"rsa-sha2-512," \
"rsa-sha2-256," \
"ssh-rsa" \
DSA_HOSTKEYS
#define DEFAULT_HOSTKEYS "ssh-ed25519," \
EC_HOSTKEYS \
+ "sk-ssh-ed25519@openssh.com," \
+ EC_SK_HOSTKEYS \
"rsa-sha2-512," \
"rsa-sha2-256"
#define PUBLIC_KEY_ALGORITHMS "ssh-ed25519-cert-v01@openssh.com," \
+ "sk-ssh-ed25519-cert-v01@openssh.com," \
EC_PUBLIC_KEY_ALGORITHMS \
"rsa-sha2-512-cert-v01@openssh.com," \
"rsa-sha2-256-cert-v01@openssh.com," \
@@ -186,7 +198,7 @@
"rsa-sha2-512," \
"rsa-sha2-256"
-#define FIPS_ALLOWED_PUBLIC_KEY_ALGORITHMS EC_PUBLIC_KEY_ALGORITHMS \
+#define FIPS_ALLOWED_PUBLIC_KEY_ALGORITHMS EC_FIPS_PUBLIC_KEY_ALGOS \
"rsa-sha2-512-cert-v01@openssh.com," \
"rsa-sha2-256-cert-v01@openssh.com," \
FIPS_ALLOWED_HOSTKEYS
diff --git a/src/knownhosts.c b/src/knownhosts.c
index 1f52dedc..94618fe2 100644
--- a/src/knownhosts.c
+++ b/src/knownhosts.c
@@ -480,6 +480,8 @@ static const char *ssh_known_host_sigs_from_hostkey_type(enum ssh_keytypes_e typ
return "rsa-sha2-512,rsa-sha2-256,ssh-rsa";
case SSH_KEYTYPE_ED25519:
return "ssh-ed25519";
+ case SSH_KEYTYPE_SK_ED25519:
+ return "sk-ssh-ed25519@openssh.com";
#ifdef HAVE_DSA
case SSH_KEYTYPE_DSS:
return "ssh-dss";
@@ -494,6 +496,8 @@ static const char *ssh_known_host_sigs_from_hostkey_type(enum ssh_keytypes_e typ
return "ecdsa-sha2-nistp384";
case SSH_KEYTYPE_ECDSA_P521:
return "ecdsa-sha2-nistp521";
+ case SSH_KEYTYPE_SK_ECDSA:
+ return "sk-ecdsa-sha2-nistp256@openssh.com";
#else
case SSH_KEYTYPE_ECDSA_P256:
case SSH_KEYTYPE_ECDSA_P384:
diff --git a/tests/unittests/torture_knownhosts_parsing.c b/tests/unittests/torture_knownhosts_parsing.c
index fffa8296..7fd21f05 100644
--- a/tests/unittests/torture_knownhosts_parsing.c
+++ b/tests/unittests/torture_knownhosts_parsing.c
@@ -634,7 +634,9 @@ static void torture_knownhosts_algorithms(void **state)
bool process_config = false;
const char *expect = "ssh-ed25519,rsa-sha2-512,rsa-sha2-256,"
"ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,"
- "ecdsa-sha2-nistp256";
+ "ecdsa-sha2-nistp256,"
+ "sk-ssh-ed25519@openssh.com,"
+ "sk-ecdsa-sha2-nistp256@openssh.com";
const char *expect_fips = "rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp521,"
"ecdsa-sha2-nistp384,ecdsa-sha2-nistp256";
@@ -669,7 +671,9 @@ static void torture_knownhosts_algorithms_global(void **state)
bool process_config = false;
const char *expect = "ssh-ed25519,rsa-sha2-512,rsa-sha2-256,"
"ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,"
- "ecdsa-sha2-nistp256";
+ "ecdsa-sha2-nistp256,"
+ "sk-ssh-ed25519@openssh.com,"
+ "sk-ecdsa-sha2-nistp256@openssh.com";
const char *expect_fips = "rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp521,"
"ecdsa-sha2-nistp384,ecdsa-sha2-nistp256";

16
SOURCES/libssh-0.10.4.tar.xz.asc
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@ -0,0 +1,16 @@
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41
SOURCES/libssh-0.10.6-compress.patch
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@ -1,41 +0,0 @@
From c9cfeb9b838b801c3e2bb070c3db914e81ca4e68 Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Mon, 12 Aug 2024 17:49:46 +0200
Subject: [PATCH] wrapper: Avoid asymmetric termination of gzip context
For some reason, both compress and decompress contexts were terminated
with both compress and decompress end functions (if the deflateEnd worked),
which was causing for some another unexplained reasons issues on i686
architecture when running the torture_packet unit test.
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
---
src/wrapper.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/src/wrapper.c b/src/wrapper.c
index bf949ea9..d9cf6db5 100644
--- a/src/wrapper.c
+++ b/src/wrapper.c
@@ -200,14 +200,12 @@ void crypto_free(struct ssh_crypto_struct *crypto)
SAFE_FREE(crypto->secret_hash);
}
#ifdef WITH_ZLIB
- if (crypto->compress_out_ctx &&
- (deflateEnd(crypto->compress_out_ctx) != 0)) {
- inflateEnd(crypto->compress_out_ctx);
+ if (crypto->compress_out_ctx) {
+ deflateEnd(crypto->compress_out_ctx);
}
SAFE_FREE(crypto->compress_out_ctx);
- if (crypto->compress_in_ctx &&
- (deflateEnd(crypto->compress_in_ctx) != 0)) {
+ if (crypto->compress_in_ctx) {
inflateEnd(crypto->compress_in_ctx);
}
SAFE_FREE(crypto->compress_in_ctx);
--
2.46.0

263
SOURCES/libssh-0.10.6-ipv6-hostname.patch
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@ -1,263 +0,0 @@
From 4f997aee7c7d7ea346b3e8ba505da0b7601ff318 Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Fri, 22 Dec 2023 10:32:40 +0100
Subject: [PATCH 1/2] Fix regression in IPv6 addresses in hostname parsing
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
---
include/libssh/config_parser.h | 11 ++++++++---
src/config.c | 4 ++--
src/config_parser.c | 16 +++++++++++-----
src/options.c | 10 ++--------
4 files changed, 23 insertions(+), 18 deletions(-)
diff --git a/include/libssh/config_parser.h b/include/libssh/config_parser.h
index a7dd42a2..ca353432 100644
--- a/include/libssh/config_parser.h
+++ b/include/libssh/config_parser.h
@@ -30,6 +30,8 @@
extern "C" {
#endif
+#include <stdbool.h>
+
char *ssh_config_get_cmd(char **str);
char *ssh_config_get_token(char **str);
@@ -49,14 +51,17 @@ int ssh_config_get_yesno(char **str, int notfound);
* be stored or NULL if we do not care about the result.
* @param[out] port Pointer to the location, where the new port will
* be stored or NULL if we do not care about the result.
+ * @param[in] ignore_port Set to true if the we should not attempt to parse
+ * port number.
*
* @returns SSH_OK if the provided string is in format of SSH URI,
* SSH_ERROR on failure
*/
int ssh_config_parse_uri(const char *tok,
- char **username,
- char **hostname,
- char **port);
+ char **username,
+ char **hostname,
+ char **port,
+ bool ignore_port);
#ifdef __cplusplus
}
diff --git a/src/config.c b/src/config.c
index 5eedbce9..7135c3b1 100644
--- a/src/config.c
+++ b/src/config.c
@@ -464,7 +464,7 @@ ssh_config_parse_proxy_jump(ssh_session session, const char *s, bool do_parsing)
}
if (parse_entry) {
/* We actually care only about the first item */
- rv = ssh_config_parse_uri(cp, &username, &hostname, &port);
+ rv = ssh_config_parse_uri(cp, &username, &hostname, &port, false);
/* The rest of the list needs to be passed on */
if (endp != NULL) {
next = strdup(endp + 1);
@@ -475,7 +475,7 @@ ssh_config_parse_proxy_jump(ssh_session session, const char *s, bool do_parsing)
}
} else {
/* The rest is just sanity-checked to avoid failures later */
- rv = ssh_config_parse_uri(cp, NULL, NULL, NULL);
+ rv = ssh_config_parse_uri(cp, NULL, NULL, NULL, false);
}
if (rv != SSH_OK) {
goto out;
diff --git a/src/config_parser.c b/src/config_parser.c
index 9ffc8b8b..5f30cd3e 100644
--- a/src/config_parser.c
+++ b/src/config_parser.c
@@ -162,9 +162,10 @@ int ssh_config_get_yesno(char **str, int notfound)
}
int ssh_config_parse_uri(const char *tok,
- char **username,
- char **hostname,
- char **port)
+ char **username,
+ char **hostname,
+ char **port,
+ bool ignore_port)
{
char *endp = NULL;
long port_n;
@@ -210,12 +211,17 @@ int ssh_config_parse_uri(const char *tok,
if (endp == NULL) {
goto error;
}
- } else {
- /* Hostnames or aliases expand to the last colon or to the end */
+ } else if (!ignore_port) {
+ /* Hostnames or aliases expand to the last colon (if port is requested)
+ * or to the end */
endp = strrchr(tok, ':');
if (endp == NULL) {
endp = strchr(tok, '\0');
}
+ } else {
+ /* If no port is requested, expand to the end of line
+ * (to accommodate the IPv6 addresses) */
+ endp = strchr(tok, '\0');
}
if (tok == endp) {
/* Zero-length hostnames are not valid */
diff --git a/src/options.c b/src/options.c
index 2e73be46..676c49e7 100644
--- a/src/options.c
+++ b/src/options.c
@@ -634,17 +634,11 @@ int ssh_options_set(ssh_session session, enum ssh_options_e type,
ssh_set_error_invalid(session);
return -1;
} else {
- char *username = NULL, *hostname = NULL, *port = NULL;
- rc = ssh_config_parse_uri(value, &username, &hostname, &port);
+ char *username = NULL, *hostname = NULL;
+ rc = ssh_config_parse_uri(value, &username, &hostname, NULL, true);
if (rc != SSH_OK) {
return -1;
}
- if (port != NULL) {
- SAFE_FREE(username);
- SAFE_FREE(hostname);
- SAFE_FREE(port);
- return -1;
- }
if (username != NULL) {
SAFE_FREE(session->opts.username);
session->opts.username = username;
--
2.43.0
From 6f6e453d7b0ad4ee6a6f6a1c96a9a6b27821410d Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Fri, 22 Dec 2023 09:52:18 +0100
Subject: [PATCH 2/2] tests: Increase test coverage for IPv6 address parsing as
hostnames
This was an issue in cockpit:
https://github.com/cockpit-project/cockpit/issues/19772
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
---
tests/unittests/torture_config.c | 49 +++++++++++++++++++++++++++++++
tests/unittests/torture_options.c | 16 ++++++++++
2 files changed, 65 insertions(+)
diff --git a/tests/unittests/torture_config.c b/tests/unittests/torture_config.c
index bc6b08f9..751aa126 100644
--- a/tests/unittests/torture_config.c
+++ b/tests/unittests/torture_config.c
@@ -2332,6 +2332,53 @@ static void torture_config_make_absolute_no_sshdir(void **state)
torture_config_make_absolute_int(state, 1);
}
+static void torture_config_parse_uri(void **state)
+{
+ char *username = NULL;
+ char *hostname = NULL;
+ char *port = NULL;
+ int rc;
+
+ (void)state; /* unused */
+
+ rc = ssh_config_parse_uri("localhost", &username, &hostname, &port, false);
+ assert_return_code(rc, errno);
+ assert_null(username);
+ assert_string_equal(hostname, "localhost");
+ SAFE_FREE(hostname);
+ assert_null(port);
+
+ rc = ssh_config_parse_uri("1.2.3.4", &username, &hostname, &port, false);
+ assert_return_code(rc, errno);
+ assert_null(username);
+ assert_string_equal(hostname, "1.2.3.4");
+ SAFE_FREE(hostname);
+ assert_null(port);
+
+ rc = ssh_config_parse_uri("1.2.3.4:2222", &username, &hostname, &port, false);
+ assert_return_code(rc, errno);
+ assert_null(username);
+ assert_string_equal(hostname, "1.2.3.4");
+ SAFE_FREE(hostname);
+ assert_string_equal(port, "2222");
+ SAFE_FREE(port);
+
+ rc = ssh_config_parse_uri("[1:2:3::4]:2222", &username, &hostname, &port, false);
+ assert_return_code(rc, errno);
+ assert_null(username);
+ assert_string_equal(hostname, "1:2:3::4");
+ SAFE_FREE(hostname);
+ assert_string_equal(port, "2222");
+ SAFE_FREE(port);
+
+ /* do not want port */
+ rc = ssh_config_parse_uri("1:2:3::4", &username, &hostname, NULL, true);
+ assert_return_code(rc, errno);
+ assert_null(username);
+ assert_string_equal(hostname, "1:2:3::4");
+ SAFE_FREE(hostname);
+}
+
int torture_run_tests(void)
{
int rc;
@@ -2424,6 +2471,8 @@ int torture_run_tests(void)
setup, teardown),
cmocka_unit_test_setup_teardown(torture_config_make_absolute_no_sshdir,
setup_no_sshdir, teardown),
+ cmocka_unit_test_setup_teardown(torture_config_parse_uri,
+ setup, teardown),
};
diff --git a/tests/unittests/torture_options.c b/tests/unittests/torture_options.c
index 5ba3bdc6..b07712d8 100644
--- a/tests/unittests/torture_options.c
+++ b/tests/unittests/torture_options.c
@@ -57,6 +57,20 @@ static void torture_options_set_host(void **state) {
assert_non_null(session->opts.host);
assert_string_equal(session->opts.host, "localhost");
+ /* IPv4 address */
+ rc = ssh_options_set(session, SSH_OPTIONS_HOST, "127.1.1.1");
+ assert_true(rc == 0);
+ assert_non_null(session->opts.host);
+ assert_string_equal(session->opts.host, "127.1.1.1");
+ assert_null(session->opts.username);
+
+ /* IPv6 address */
+ rc = ssh_options_set(session, SSH_OPTIONS_HOST, "::1");
+ assert_true(rc == 0);
+ assert_non_null(session->opts.host);
+ assert_string_equal(session->opts.host, "::1");
+ assert_null(session->opts.username);
+
rc = ssh_options_set(session, SSH_OPTIONS_HOST, "guru@meditation");
assert_true(rc == 0);
assert_non_null(session->opts.host);
@@ -64,12 +78,14 @@ static void torture_options_set_host(void **state) {
assert_non_null(session->opts.username);
assert_string_equal(session->opts.username, "guru");
+ /* more @ in uri is OK -- it should go to the username */
rc = ssh_options_set(session, SSH_OPTIONS_HOST, "at@login@hostname");
assert_true(rc == 0);
assert_non_null(session->opts.host);
assert_string_equal(session->opts.host, "hostname");
assert_non_null(session->opts.username);
assert_string_equal(session->opts.username, "at@login");
+
}
static void torture_options_set_ciphers(void **state) {
--
2.43.0

48
SOURCES/libssh-0.10.6-no-engine.patch
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@ -1,48 +0,0 @@
diff -up libssh-0.10.6/src/libcrypto.c.no-engine libssh-0.10.6/src/libcrypto.c
--- libssh-0.10.6/src/libcrypto.c.no-engine 2024-07-31 09:25:56.460404672 +0200
+++ libssh-0.10.6/src/libcrypto.c 2024-07-31 09:28:46.900273530 +0200
@@ -94,7 +94,7 @@ void ssh_reseed(void){
#endif
}
-#ifndef WITH_PKCS11_PROVIDER
+#if defined(WITH_PKCS11_URI) && !defined(WITH_PKCS11_PROVIDER)
static ENGINE *engine = NULL;
ENGINE *pki_get_engine(void)
@@ -126,7 +126,7 @@ ENGINE *pki_get_engine(void)
}
return engine;
}
-#endif /* WITH_PKCS11_PROVIDER */
+#endif /* defined(WITH_PKCS11_URI) && !defined(WITH_PKCS11_PROVIDER) */
#ifdef HAVE_OPENSSL_EVP_KDF_CTX
#if OPENSSL_VERSION_NUMBER < 0x30000000L
diff -up libssh-0.10.6/src/pki_crypto.c.no-engine libssh-0.10.6/src/pki_crypto.c
--- libssh-0.10.6/src/pki_crypto.c.no-engine 2024-07-31 09:26:34.296823306 +0200
+++ libssh-0.10.6/src/pki_crypto.c 2024-07-31 09:29:36.414810967 +0200
@@ -33,7 +33,9 @@
#include <openssl/pem.h>
#include <openssl/evp.h>
+#if defined(WITH_PKCS11_URI) && !defined(WITH_PKCS11_PROVIDER)
#include <openssl/engine.h>
+#endif
#include <openssl/err.h>
#if OPENSSL_VERSION_NUMBER < 0x30000000L
#include <openssl/dsa.h>
diff -up libssh-0.10.6/src/libcrypto.c.no-engine libssh-0.10.6/src/libcrypto.c
--- libssh-0.10.6/src/libcrypto.c.no-engine 2024-07-31 11:03:45.262319724 +0200
+++ libssh-0.10.6/src/libcrypto.c 2024-07-31 11:04:59.842161279 +0200
@@ -53,7 +53,9 @@
#include <openssl/core_names.h>
#endif /* OPENSSL_VERSION_NUMBER */
#include <openssl/rand.h>
+#if defined(WITH_PKCS11_URI) && !defined(WITH_PKCS11_PROVIDER)
#include <openssl/engine.h>
+#endif
#include "libcrypto-compat.h"

4069
SOURCES/libssh-0.10.6-pkcs11-provider.patch
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47
SOURCES/libssh-0.10.6-rate-limit.patch
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@ -1,47 +0,0 @@
From 7b89ff760a2c7119916eaa8fd6a62afbd15fc3ad Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Fri, 9 Aug 2024 11:30:15 +0200
Subject: [PATCH] test: Workaround the new OpenSSH failure rate limiting
The new OpenSSH rate limits the failed authentication attempts per source
address and drops connection when the amount is reached, which is happening
in our testsuite.
By whitelisting the IP address of the client on the socket wrapper,
this allows the tests to pass.
https://man.openbsd.org/sshd_config.5#PerSourcePenaltyExemptList
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
---
tests/torture.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tests/torture.c b/tests/torture.c
index c832dfa6..ad0a7836 100644
--- a/tests/torture.c
+++ b/tests/torture.c
@@ -755,6 +755,9 @@ static void torture_setup_create_sshd_config(void **state, bool pam)
"HostKeyAlgorithms " OPENSSH_KEYS "\n"
#if OPENSSH_VERSION_MAJOR == 8 && OPENSSH_VERSION_MINOR >= 2
"CASignatureAlgorithms " OPENSSH_KEYS "\n"
+#endif
+#if (OPENSSH_VERSION_MAJOR == 9 && OPENSSH_VERSION_MINOR >= 8) || OPENSSH_VERSION_MAJOR > 9
+ "PerSourcePenaltyExemptList 127.0.0.21\n"
#endif
"Ciphers " OPENSSH_CIPHERS "\n"
"KexAlgorithms " OPENSSH_KEX "\n"
@@ -786,6 +789,9 @@ static void torture_setup_create_sshd_config(void **state, bool pam)
"%s\n" /* Here comes UsePam */
"%s" /* The space for test-specific options */
"\n"
+#if (OPENSSH_VERSION_MAJOR == 9 && OPENSSH_VERSION_MINOR >= 8) || OPENSSH_VERSION_MAJOR > 9
+ "PerSourcePenaltyExemptList 127.0.0.21\n"
+#endif
"Ciphers "
"aes256-gcm@openssh.com,aes256-ctr,aes256-cbc,"
"aes128-gcm@openssh.com,aes128-ctr,aes128-cbc"
--
2.46.0

37
SOURCES/libssh-0.10.6-rekey-timeout.patch
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@ -1,37 +0,0 @@
From 96d76161666b117099696afebcef2fe42ae80715 Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Tue, 16 May 2023 22:55:11 +0200
Subject: [PATCH] tests: Give the server more time handle rekey
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Norbert Pocs <npocs@redhat.com>
---
tests/client/torture_rekey.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tests/client/torture_rekey.c b/tests/client/torture_rekey.c
index ccd5ae2cf..0fc13b8b3 100644
--- a/tests/client/torture_rekey.c
+++ b/tests/client/torture_rekey.c
@@ -505,7 +505,7 @@ static void torture_rekey_different_kex(void **state)
memset(data, 'A', 128);
for (i = 0; i < KEX_RETRY; i++) {
ssh_send_ignore(s->ssh.session, data);
- ssh_handle_packets(s->ssh.session, 100);
+ ssh_handle_packets(s->ssh.session, 1000);
c = s->ssh.session->current_crypto;
/* SHA256 len */
@@ -583,7 +583,7 @@ static void torture_rekey_server_different_kex(void **state)
memset(data, 'A', 128);
for (i = 0; i < KEX_RETRY; i++) {
ssh_send_ignore(s->ssh.session, data);
- ssh_handle_packets(s->ssh.session, 100);
+ ssh_handle_packets(s->ssh.session, 1000);
c = s->ssh.session->current_crypto;
/* SHA256 len */
--
GitLab

16
SOURCES/libssh-0.10.6.tar.xz.asc
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@ -1,16 +0,0 @@
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-----END PGP SIGNATURE-----

4385
SOURCES/loglevel.patch
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514
SOURCES/memory_leak.patch
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@ -0,0 +1,514 @@
From 8795d8912c8a83aaf900c0260e252a35f64eb200 Mon Sep 17 00:00:00 2001
From: Norbert Pocs <npocs@redhat.com>
Date: Fri, 18 Nov 2022 17:22:46 +0100
Subject: [PATCH] Fix memory leaks of bignums when openssl >= 3.0
The openssl 3.0 support has introduced some memory leaks at key build as
OSSL_PARAM_BLD_push_BN duplicates the bignum and does not save the pointer
itself.
Signed-off-by: Norbert Pocs <npocs@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
---
include/libssh/dh.h | 2 +-
src/dh_crypto.c | 28 ++---
src/pki_crypto.c | 262 ++++++++++++++++++++++++--------------------
3 files changed, 151 insertions(+), 141 deletions(-)
diff --git a/include/libssh/dh.h b/include/libssh/dh.h
index 353dc233..9b9bb472 100644
--- a/include/libssh/dh.h
+++ b/include/libssh/dh.h
@@ -53,7 +53,7 @@ int ssh_dh_keypair_get_keys(struct dh_ctx *ctx, int peer,
bignum *priv, bignum *pub);
#endif /* OPENSSL_VERSION_NUMBER */
int ssh_dh_keypair_set_keys(struct dh_ctx *ctx, int peer,
- const bignum priv, const bignum pub);
+ bignum priv, bignum pub);
int ssh_dh_compute_shared_secret(struct dh_ctx *ctx, int local, int remote,
bignum *dest);
diff --git a/src/dh_crypto.c b/src/dh_crypto.c
index a847c6a2..b578ddec 100644
--- a/src/dh_crypto.c
+++ b/src/dh_crypto.c
@@ -154,12 +154,9 @@ int ssh_dh_keypair_get_keys(struct dh_ctx *ctx, int peer,
#endif /* OPENSSL_VERSION_NUMBER */
int ssh_dh_keypair_set_keys(struct dh_ctx *ctx, int peer,
- const bignum priv, const bignum pub)
+ bignum priv, bignum pub)
{
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
- bignum priv_key = NULL;
- bignum pub_key = NULL;
-#else
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
int rc;
OSSL_PARAM *params = NULL, *out_params = NULL, *merged_params = NULL;
OSSL_PARAM_BLD *param_bld = NULL;
@@ -172,7 +169,11 @@ int ssh_dh_keypair_set_keys(struct dh_ctx *ctx, int peer,
return SSH_ERROR;
}
-#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+#if OPENSSL_VERSION_NUMBER < 0x30000000L
+ (void)DH_set0_key(ctx->keypair[peer], pub, priv);
+
+ return SSH_OK;
+#else
rc = EVP_PKEY_todata(ctx->keypair[peer], EVP_PKEY_KEYPAIR, &out_params);
if (rc != 1) {
return SSH_ERROR;
@@ -195,35 +196,22 @@ int ssh_dh_keypair_set_keys(struct dh_ctx *ctx, int peer,
rc = SSH_ERROR;
goto out;
}
-#endif /* OPENSSL_VERSION_NUMBER */
if (priv) {
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
- priv_key = priv;
-#else
rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_PRIV_KEY, priv);
if (rc != 1) {
rc = SSH_ERROR;
goto out;
}
-#endif /* OPENSSL_VERSION_NUMBER */
}
if (pub) {
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
- pub_key = pub;
-#else
rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_PUB_KEY, pub);
if (rc != 1) {
rc = SSH_ERROR;
goto out;
}
-#endif /* OPENSSL_VERSION_NUMBER */
}
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
- (void)DH_set0_key(ctx->keypair[peer], pub_key, priv_key);
- return SSH_OK;
-#else
params = OSSL_PARAM_BLD_to_param(param_bld);
if (params == NULL) {
rc = SSH_ERROR;
@@ -248,6 +236,8 @@ int ssh_dh_keypair_set_keys(struct dh_ctx *ctx, int peer,
rc = SSH_OK;
out:
+ bignum_safe_free(priv);
+ bignum_safe_free(pub);
EVP_PKEY_CTX_free(evp_ctx);
OSSL_PARAM_free(out_params);
OSSL_PARAM_free(params);
diff --git a/src/pki_crypto.c b/src/pki_crypto.c
index 0a5003da..d3359e2d 100644
--- a/src/pki_crypto.c
+++ b/src/pki_crypto.c
@@ -1492,18 +1492,18 @@ int pki_privkey_build_dss(ssh_key key,
ssh_string privkey)
{
int rc;
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
BIGNUM *bp, *bq, *bg, *bpub_key, *bpriv_key;
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+ OSSL_PARAM_BLD *param_bld = OSSL_PARAM_BLD_new();
+ if (param_bld == NULL) {
+ return SSH_ERROR;
+ }
#else
- const BIGNUM *pb, *qb, *gb, *pubb, *privb;
- OSSL_PARAM_BLD *param_bld;
-#endif /* OPENSSL_VERSION_NUMBER */
-
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
key->dsa = DSA_new();
if (key->dsa == NULL) {
return SSH_ERROR;
}
+#endif /* OPENSSL_VERSION_NUMBER */
bp = ssh_make_string_bn(p);
bq = ssh_make_string_bn(q);
@@ -1512,9 +1512,11 @@ int pki_privkey_build_dss(ssh_key key,
bpriv_key = ssh_make_string_bn(privkey);
if (bp == NULL || bq == NULL ||
bg == NULL || bpub_key == NULL) {
+ rc = SSH_ERROR;
goto fail;
}
+#if OPENSSL_VERSION_NUMBER < 0x30000000L
/* Memory management of bp, qq and bg is transferred to DSA object */
rc = DSA_set0_pqg(key->dsa, bp, bq, bg);
if (rc == 0) {
@@ -1532,39 +1534,43 @@ fail:
DSA_free(key->dsa);
return SSH_ERROR;
#else
- param_bld = OSSL_PARAM_BLD_new();
- if (param_bld == NULL)
- goto err;
-
- pb = ssh_make_string_bn(p);
- qb = ssh_make_string_bn(q);
- gb = ssh_make_string_bn(g);
- pubb = ssh_make_string_bn(pubkey);
- privb = ssh_make_string_bn(privkey);
-
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_P, pb);
- if (rc != 1)
- goto err;
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_Q, qb);
- if (rc != 1)
- goto err;
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_G, gb);
- if (rc != 1)
- goto err;
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_PUB_KEY, pubb);
- if (rc != 1)
- goto err;
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_PRIV_KEY, privb);
- if (rc != 1)
- goto err;
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_P, bp);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_Q, bq);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_G, bg);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_PUB_KEY, bpub_key);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_PRIV_KEY, bpriv_key);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
rc = evp_build_pkey("DSA", param_bld, &(key->key), EVP_PKEY_KEYPAIR);
+
+fail:
OSSL_PARAM_BLD_free(param_bld);
+ bignum_safe_free(bp);
+ bignum_safe_free(bq);
+ bignum_safe_free(bg);
+ bignum_safe_free(bpub_key);
+ bignum_safe_free(bpriv_key);
return rc;
-err:
- OSSL_PARAM_BLD_free(param_bld);
- return -1;
#endif /* OPENSSL_VERSION_NUMBER */
}
@@ -1574,18 +1580,18 @@ int pki_pubkey_build_dss(ssh_key key,
ssh_string g,
ssh_string pubkey) {
int rc;
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
BIGNUM *bp = NULL, *bq = NULL, *bg = NULL, *bpub_key = NULL;
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+ OSSL_PARAM_BLD *param_bld = OSSL_PARAM_BLD_new();
+ if (param_bld == NULL) {
+ return SSH_ERROR;
+ }
#else
- const BIGNUM *pb, *qb, *gb, *pubb;
- OSSL_PARAM_BLD *param_bld;
-#endif /* OPENSSL_VERSION_NUMBER */
-
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
key->dsa = DSA_new();
if (key->dsa == NULL) {
return SSH_ERROR;
}
+#endif /* OPENSSL_VERSION_NUMBER */
bp = ssh_make_string_bn(p);
bq = ssh_make_string_bn(q);
@@ -1593,9 +1599,11 @@ int pki_pubkey_build_dss(ssh_key key,
bpub_key = ssh_make_string_bn(pubkey);
if (bp == NULL || bq == NULL ||
bg == NULL || bpub_key == NULL) {
+ rc = SSH_ERROR;
goto fail;
}
+#if OPENSSL_VERSION_NUMBER < 0x30000000L
/* Memory management of bp, bq and bg is transferred to DSA object */
rc = DSA_set0_pqg(key->dsa, bp, bq, bg);
if (rc == 0) {
@@ -1613,35 +1621,37 @@ fail:
DSA_free(key->dsa);
return SSH_ERROR;
#else
- param_bld = OSSL_PARAM_BLD_new();
- if (param_bld == NULL)
- goto err;
-
- pb = ssh_make_string_bn(p);
- qb = ssh_make_string_bn(q);
- gb = ssh_make_string_bn(g);
- pubb = ssh_make_string_bn(pubkey);
-
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_P, pb);
- if (rc != 1)
- goto err;
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_Q, qb);
- if (rc != 1)
- goto err;
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_G, gb);
- if (rc != 1)
- goto err;
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_PUB_KEY, pubb);
- if (rc != 1)
- goto err;
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_P, bp);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_Q, bq);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_FFC_G, bg);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_PUB_KEY, bpub_key);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
rc = evp_build_pkey("DSA", param_bld, &(key->key), EVP_PKEY_PUBLIC_KEY);
+
+fail:
OSSL_PARAM_BLD_free(param_bld);
+ bignum_safe_free(bp);
+ bignum_safe_free(bq);
+ bignum_safe_free(bg);
+ bignum_safe_free(bpub_key);
return rc;
-err:
- OSSL_PARAM_BLD_free(param_bld);
- return -1;
#endif /* OPENSSL_VERSION_NUMBER */
}
@@ -1654,18 +1664,18 @@ int pki_privkey_build_rsa(ssh_key key,
ssh_string q)
{
int rc;
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
BIGNUM *be, *bn, *bd/*, *biqmp*/, *bp, *bq;
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+ OSSL_PARAM_BLD *param_bld = OSSL_PARAM_BLD_new();
+ if (param_bld == NULL) {
+ return SSH_ERROR;
+ }
#else
- const BIGNUM *nb, *eb, *db, *pb, *qb;
- OSSL_PARAM_BLD *param_bld;
-#endif /* OPENSSL_VERSION_NUMBER */
-
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
key->rsa = RSA_new();
if (key->rsa == NULL) {
return SSH_ERROR;
}
+#endif /* OPENSSL_VERSION_NUMBER */
bn = ssh_make_string_bn(n);
be = ssh_make_string_bn(e);
@@ -1675,9 +1685,11 @@ int pki_privkey_build_rsa(ssh_key key,
bq = ssh_make_string_bn(q);
if (be == NULL || bn == NULL || bd == NULL ||
/*biqmp == NULL ||*/ bp == NULL || bq == NULL) {
+ rc = SSH_ERROR;
goto fail;
}
+#if OPENSSL_VERSION_NUMBER < 0x30000000L
/* Memory management of be, bn and bd is transferred to RSA object */
rc = RSA_set0_key(key->rsa, bn, be, bd);
if (rc == 0) {
@@ -1702,41 +1714,49 @@ fail:
RSA_free(key->rsa);
return SSH_ERROR;
#else
- param_bld = OSSL_PARAM_BLD_new();
- if (param_bld == NULL)
- goto err;
-
- nb = ssh_make_string_bn(n);
- eb = ssh_make_string_bn(e);
- db = ssh_make_string_bn(d);
- pb = ssh_make_string_bn(p);
- qb = ssh_make_string_bn(q);
-
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_RSA_N, nb);
- if (rc != 1)
- goto err;
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_RSA_E, eb);
- if (rc != 1)
- goto err;
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_RSA_D, db);
- if (rc != 1)
- goto err;
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_RSA_N, bn);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_RSA_E, be);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_RSA_D, bd);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
rc = evp_build_pkey("RSA", param_bld, &(key->key), EVP_PKEY_KEYPAIR);
- OSSL_PARAM_BLD_free(param_bld);
+ if (rc != SSH_OK) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
- rc = EVP_PKEY_set_bn_param(key->key, OSSL_PKEY_PARAM_RSA_FACTOR1, pb);
- if (rc != 1)
- goto err;
+ rc = EVP_PKEY_set_bn_param(key->key, OSSL_PKEY_PARAM_RSA_FACTOR1, bp);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
- rc = EVP_PKEY_set_bn_param(key->key, OSSL_PKEY_PARAM_RSA_FACTOR2, qb);
- if (rc != 1)
- goto err;
+ rc = EVP_PKEY_set_bn_param(key->key, OSSL_PKEY_PARAM_RSA_FACTOR2, bq);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
- return rc;
-err:
+fail:
OSSL_PARAM_BLD_free(param_bld);
- return -1;
+ bignum_safe_free(bn);
+ bignum_safe_free(be);
+ bignum_safe_free(bd);
+ bignum_safe_free(bp);
+ bignum_safe_free(bq);
+
+ return rc;
#endif /* OPENSSL_VERSION_NUMBER */
}
@@ -1744,25 +1764,27 @@ int pki_pubkey_build_rsa(ssh_key key,
ssh_string e,
ssh_string n) {
int rc;
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
BIGNUM *be = NULL, *bn = NULL;
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+ OSSL_PARAM_BLD *param_bld = OSSL_PARAM_BLD_new();
+ if (param_bld == NULL) {
+ return SSH_ERROR;
+ }
#else
- const BIGNUM *eb, *nb;
- OSSL_PARAM_BLD *param_bld;
-#endif /* OPENSSL_VERSION_NUMBER */
-
-#if OPENSSL_VERSION_NUMBER < 0x30000000L
key->rsa = RSA_new();
if (key->rsa == NULL) {
return SSH_ERROR;
}
+#endif /* OPENSSL_VERSION_NUMBER */
be = ssh_make_string_bn(e);
bn = ssh_make_string_bn(n);
if (be == NULL || bn == NULL) {
+ rc = SSH_ERROR;
goto fail;
}
+#if OPENSSL_VERSION_NUMBER < 0x30000000L
/* Memory management of bn and be is transferred to RSA object */
rc = RSA_set0_key(key->rsa, bn, be, NULL);
if (rc == 0) {
@@ -1774,27 +1796,25 @@ fail:
RSA_free(key->rsa);
return SSH_ERROR;
#else
- nb = ssh_make_string_bn(n);
- eb = ssh_make_string_bn(e);
-
- param_bld = OSSL_PARAM_BLD_new();
- if (param_bld == NULL)
- goto err;
-
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_RSA_N, nb);
- if (rc != 1)
- goto err;
- rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_RSA_E, eb);
- if (rc != 1)
- goto err;
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_RSA_N, bn);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
+ rc = OSSL_PARAM_BLD_push_BN(param_bld, OSSL_PKEY_PARAM_RSA_E, be);
+ if (rc != 1) {
+ rc = SSH_ERROR;
+ goto fail;
+ }
rc = evp_build_pkey("RSA", param_bld, &(key->key), EVP_PKEY_PUBLIC_KEY);
+
+fail:
OSSL_PARAM_BLD_free(param_bld);
+ bignum_safe_free(bn);
+ bignum_safe_free(be);
return rc;
-err:
- OSSL_PARAM_BLD_free(param_bld);
- return -1;
#endif /* OPENSSL_VERSION_NUMBER */
}
--
2.38.1

1861
SOURCES/null_dereference_rekey.patch
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File diff suppressed because it is too large Load Diff

842
SOURCES/options_apply.patch
Unescape View File

@ -0,0 +1,842 @@
From 11c0d687a081fe64501e21c95def7f893611d029 Mon Sep 17 00:00:00 2001
From: Norbert Pocs <npocs@redhat.com>
Date: Wed, 16 Nov 2022 10:40:38 +0100
Subject: [PATCH 1/5] Add a placehohlder for non-expanded identities
Expanding a string twice could lead to unwanted behaviour.
This solution creates a ssh_list (`opts.identites_non_exp`) to store the strings
before expansion and by using ssh_apply it moves the string to the
`opts.identities`. This way the expanded strings are separated.
Signed-off-by: Norbert Pocs <npocs@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
---
include/libssh/session.h | 1 +
src/options.c | 86 +++++++++++++++++++++++++---------------
src/session.c | 23 +++++++++--
3 files changed, 75 insertions(+), 35 deletions(-)
diff --git a/include/libssh/session.h b/include/libssh/session.h
index d3e5787c..e22b0d67 100644
--- a/include/libssh/session.h
+++ b/include/libssh/session.h
@@ -209,6 +209,7 @@ struct ssh_session_struct {
#endif
struct {
struct ssh_list *identity;
+ struct ssh_list *identity_non_exp;
char *username;
char *host;
char *bindaddr; /* bind the client to an ip addr */
diff --git a/src/options.c b/src/options.c
index 56e09c65..bb085384 100644
--- a/src/options.c
+++ b/src/options.c
@@ -52,7 +52,7 @@
* @brief Duplicate the options of a session structure.
*
* If you make several sessions with the same options this is useful. You
- * cannot use twice the same option structure in ssh_session_connect.
+ * cannot use twice the same option structure in ssh_connect.
*
* @param src The session to use to copy the options.
*
@@ -61,13 +61,14 @@
*
* @returns 0 on success, -1 on error with errno set.
*
- * @see ssh_session_connect()
+ * @see ssh_connect()
* @see ssh_free()
*/
int ssh_options_copy(ssh_session src, ssh_session *dest)
{
ssh_session new;
struct ssh_iterator *it = NULL;
+ struct ssh_list *list = NULL;
char *id = NULL;
int i;
@@ -105,14 +106,15 @@ int ssh_options_copy(ssh_session src, ssh_session *dest)
}
/* Remove the default identities */
- for (id = ssh_list_pop_head(char *, new->opts.identity);
+ for (id = ssh_list_pop_head(char *, new->opts.identity_non_exp);
id != NULL;
- id = ssh_list_pop_head(char *, new->opts.identity)) {
+ id = ssh_list_pop_head(char *, new->opts.identity_non_exp)) {
SAFE_FREE(id);
}
/* Copy the new identities from the source list */
- if (src->opts.identity != NULL) {
- it = ssh_list_get_iterator(src->opts.identity);
+ list = new->opts.identity_non_exp;
+ it = ssh_list_get_iterator(src->opts.identity_non_exp);
+ for (i = 0; i < 2; i++) {
while (it) {
int rc;
@@ -122,7 +124,7 @@ int ssh_options_copy(ssh_session src, ssh_session *dest)
return -1;
}
- rc = ssh_list_append(new->opts.identity, id);
+ rc = ssh_list_append(list, id);
if (rc < 0) {
free(id);
ssh_free(new);
@@ -130,6 +132,10 @@ int ssh_options_copy(ssh_session src, ssh_session *dest)
}
it = it->next;
}
+
+ /* copy the identity list if there is any already */
+ list = new->opts.identity;
+ it = ssh_list_get_iterator(src->opts.identity);
}
if (src->opts.sshdir != NULL) {
@@ -331,7 +337,7 @@ int ssh_options_set_algo(ssh_session session,
* Add a new identity file (const char *, format string) to
* the identity list.\n
* \n
- * By default identity, id_dsa and id_rsa are checked.\n
+ * By default id_rsa, id_ecdsa and id_ed25519 files are used.\n
* \n
* The identity used to authenticate with public key will be
* prepended to the list.
@@ -700,7 +706,11 @@ int ssh_options_set(ssh_session session, enum ssh_options_e type,
if (q == NULL) {
return -1;
}
- rc = ssh_list_prepend(session->opts.identity, q);
+ if (session->opts.exp_flags & SSH_OPT_EXP_FLAG_IDENTITY) {
+ rc = ssh_list_append(session->opts.identity_non_exp, q);
+ } else {
+ rc = ssh_list_prepend(session->opts.identity_non_exp, q);
+ }
if (rc < 0) {
free(q);
return -1;
@@ -1202,7 +1212,7 @@ int ssh_options_get_port(ssh_session session, unsigned int* port_target) {
* - SSH_OPTIONS_IDENTITY:
* Get the first identity file name (const char *).\n
* \n
- * By default identity, id_dsa and id_rsa are checked.
+ * By default id_rsa, id_ecdsa and id_ed25519 files are used.
*
* - SSH_OPTIONS_PROXYCOMMAND:
* Get the proxycommand necessary to log into the
@@ -1246,7 +1256,11 @@ int ssh_options_get(ssh_session session, enum ssh_options_e type, char** value)
break;
}
case SSH_OPTIONS_IDENTITY: {
- struct ssh_iterator *it = ssh_list_get_iterator(session->opts.identity);
+ struct ssh_iterator *it;
+ it = ssh_list_get_iterator(session->opts.identity);
+ if (it == NULL) {
+ it = ssh_list_get_iterator(session->opts.identity_non_exp);
+ }
if (it == NULL) {
return SSH_ERROR;
}
@@ -1541,7 +1555,6 @@ out:
int ssh_options_apply(ssh_session session)
{
- struct ssh_iterator *it;
char *tmp;
int rc;
@@ -1586,15 +1599,17 @@ int ssh_options_apply(ssh_session session)
size_t plen = strlen(session->opts.ProxyCommand) +
5 /* strlen("exec ") */;
- p = malloc(plen + 1 /* \0 */);
- if (p == NULL) {
- return -1;
- }
+ if (strncmp(session->opts.ProxyCommand, "exec ", 5) != 0) {
+ p = malloc(plen + 1 /* \0 */);
+ if (p == NULL) {
+ return -1;
+ }
- rc = snprintf(p, plen + 1, "exec %s", session->opts.ProxyCommand);
- if ((size_t)rc != plen) {
- free(p);
- return -1;
+ rc = snprintf(p, plen + 1, "exec %s", session->opts.ProxyCommand);
+ if ((size_t)rc != plen) {
+ free(p);
+ return -1;
+ }
}
tmp = ssh_path_expand_escape(session, p);
@@ -1606,24 +1621,33 @@ int ssh_options_apply(ssh_session session)
session->opts.ProxyCommand = tmp;
}
- for (it = ssh_list_get_iterator(session->opts.identity);
- it != NULL;
- it = it->next) {
- char *id = (char *) it->data;
- if (strncmp(id, "pkcs11:", 6) == 0) {
+ for (tmp = ssh_list_pop_head(char *, session->opts.identity_non_exp);
+ tmp != NULL;
+ tmp = ssh_list_pop_head(char *, session->opts.identity_non_exp)) {
+ char *id = tmp;
+ if (strncmp(id, "pkcs11:", 6) != 0) {
/* PKCS#11 URIs are using percent-encoding so we can not mix
* it with ssh expansion of ssh escape characters.
- * Skip these identities now, before we will have PKCS#11 support
*/
- continue;
+ tmp = ssh_path_expand_escape(session, id);
+ if (tmp == NULL) {
+ return -1;
+ }
+ free(id);
}
- tmp = ssh_path_expand_escape(session, id);
- if (tmp == NULL) {
+
+ /* use append to keep the order at first call and use prepend
+ * to put anything that comes on the nth calls to the beginning */
+ if (session->opts.exp_flags & SSH_OPT_EXP_FLAG_IDENTITY) {
+ rc = ssh_list_prepend(session->opts.identity, tmp);
+ } else {
+ rc = ssh_list_append(session->opts.identity, tmp);
+ }
+ if (rc != SSH_OK) {
return -1;
}
- free(id);
- it->data = tmp;
}
+ session->opts.exp_flags |= SSH_OPT_EXP_FLAG_IDENTITY;
return 0;
}
diff --git a/src/session.c b/src/session.c
index 64e54957..34a492e4 100644
--- a/src/session.c
+++ b/src/session.c
@@ -118,13 +118,17 @@ ssh_session ssh_new(void)
if (session->opts.identity == NULL) {
goto err;
}
+ session->opts.identity_non_exp = ssh_list_new();
+ if (session->opts.identity_non_exp == NULL) {
+ goto err;
+ }
id = strdup("%d/id_ed25519");
if (id == NULL) {
goto err;
}
- rc = ssh_list_append(session->opts.identity, id);
+ rc = ssh_list_append(session->opts.identity_non_exp, id);
if (rc == SSH_ERROR) {
goto err;
}
@@ -134,7 +138,7 @@ ssh_session ssh_new(void)
if (id == NULL) {
goto err;
}
- rc = ssh_list_append(session->opts.identity, id);
+ rc = ssh_list_append(session->opts.identity_non_exp, id);
if (rc == SSH_ERROR) {
goto err;
}
@@ -144,7 +148,7 @@ ssh_session ssh_new(void)
if (id == NULL) {
goto err;
}
- rc = ssh_list_append(session->opts.identity, id);
+ rc = ssh_list_append(session->opts.identity_non_exp, id);
if (rc == SSH_ERROR) {
goto err;
}
@@ -154,7 +158,7 @@ ssh_session ssh_new(void)
if (id == NULL) {
goto err;
}
- rc = ssh_list_append(session->opts.identity, id);
+ rc = ssh_list_append(session->opts.identity_non_exp, id);
if (rc == SSH_ERROR) {
goto err;
}
@@ -284,6 +288,17 @@ void ssh_free(ssh_session session)
ssh_list_free(session->opts.identity);
}
+ if (session->opts.identity_non_exp) {
+ char *id;
+
+ for (id = ssh_list_pop_head(char *, session->opts.identity_non_exp);
+ id != NULL;
+ id = ssh_list_pop_head(char *, session->opts.identity_non_exp)) {
+ SAFE_FREE(id);
+ }
+ ssh_list_free(session->opts.identity_non_exp);
+ }
+
while ((b = ssh_list_pop_head(struct ssh_buffer_struct *,
session->out_queue)) != NULL) {
SSH_BUFFER_FREE(b);
--
2.38.1
From 4cb84b99fdb1ffd26c0241f5809e4f67ddd407c6 Mon Sep 17 00:00:00 2001
From: Norbert Pocs <npocs@redhat.com>
Date: Wed, 16 Nov 2022 11:03:30 +0100
Subject: [PATCH 2/5] tests: Use opts.identites_non_exp not opts.identities
The configuration of identities are first saved to `opts.identities_non_exp`,
then moved to `opts.identities` after calling ssh_options_apply and expanding
the identity strings. These tests are testing against the proper configuration
Signed-off-by: Norbert Pocs <npocs@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
---
tests/client/torture_auth_pkcs11.c | 2 +-
tests/unittests/torture_config.c | 3 ++-
tests/unittests/torture_options.c | 14 +++++++-------
3 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/tests/client/torture_auth_pkcs11.c b/tests/client/torture_auth_pkcs11.c
index ee97bff4..e75fea0e 100644
--- a/tests/client/torture_auth_pkcs11.c
+++ b/tests/client/torture_auth_pkcs11.c
@@ -196,7 +196,7 @@ static void torture_auth_autopubkey(void **state, const char *obj_name, const ch
rc = ssh_options_set(session, SSH_OPTIONS_IDENTITY, priv_uri);
assert_int_equal(rc, SSH_OK);
- assert_string_equal(session->opts.identity->root->data, priv_uri);
+ assert_string_equal(session->opts.identity_non_exp->root->data, priv_uri);
rc = ssh_connect(session);
assert_int_equal(rc, SSH_OK);
diff --git a/tests/unittests/torture_config.c b/tests/unittests/torture_config.c
index 354adc2f..100e68f6 100644
--- a/tests/unittests/torture_config.c
+++ b/tests/unittests/torture_config.c
@@ -2078,7 +2078,8 @@ static void torture_config_identity(void **state)
_parse_config(session, NULL, LIBSSH_TESTCONFIG_STRING13, SSH_OK);
- it = ssh_list_get_iterator(session->opts.identity);
+ /* The identities are first added to this temporary list before expanding */
+ it = ssh_list_get_iterator(session->opts.identity_non_exp);
assert_non_null(it);
id = it->data;
/* The identities are prepended to the list so we start with second one */
diff --git a/tests/unittests/torture_options.c b/tests/unittests/torture_options.c
index dc4df383..3be2de8a 100644
--- a/tests/unittests/torture_options.c
+++ b/tests/unittests/torture_options.c
@@ -406,12 +406,12 @@ static void torture_options_set_identity(void **state) {
rc = ssh_options_set(session, SSH_OPTIONS_ADD_IDENTITY, "identity1");
assert_true(rc == 0);
- assert_string_equal(session->opts.identity->root->data, "identity1");
+ assert_string_equal(session->opts.identity_non_exp->root->data, "identity1");
rc = ssh_options_set(session, SSH_OPTIONS_IDENTITY, "identity2");
assert_true(rc == 0);
- assert_string_equal(session->opts.identity->root->data, "identity2");
- assert_string_equal(session->opts.identity->root->next->data, "identity1");
+ assert_string_equal(session->opts.identity_non_exp->root->data, "identity2");
+ assert_string_equal(session->opts.identity_non_exp->root->next->data, "identity1");
}
static void torture_options_get_identity(void **state) {
@@ -429,7 +429,7 @@ static void torture_options_get_identity(void **state) {
rc = ssh_options_set(session, SSH_OPTIONS_IDENTITY, "identity2");
assert_int_equal(rc, SSH_OK);
- assert_string_equal(session->opts.identity->root->data, "identity2");
+ assert_string_equal(session->opts.identity_non_exp->root->data, "identity2");
rc = ssh_options_get(session, SSH_OPTIONS_IDENTITY, &identity);
assert_int_equal(rc, SSH_OK);
assert_non_null(identity);
@@ -867,9 +867,9 @@ static void torture_options_copy(void **state)
assert_non_null(new);
/* Check the identities match */
- it = ssh_list_get_iterator(session->opts.identity);
+ it = ssh_list_get_iterator(session->opts.identity_non_exp);
assert_non_null(it);
- it2 = ssh_list_get_iterator(new->opts.identity);
+ it2 = ssh_list_get_iterator(new->opts.identity_non_exp);
assert_non_null(it2);
while (it != NULL && it2 != NULL) {
assert_string_equal(it->data, it2->data);
@@ -956,7 +956,7 @@ static void torture_options_getopt(void **state)
"aes128-ctr");
assert_string_equal(session->opts.wanted_methods[SSH_CRYPT_S_C],
"aes128-ctr");
- assert_string_equal(session->opts.identity->root->data, "id_rsa");
+ assert_string_equal(session->opts.identity_non_exp->root->data, "id_rsa");
#ifdef WITH_ZLIB
assert_string_equal(session->opts.wanted_methods[SSH_COMP_C_S],
"zlib@openssh.com,zlib,none");
--
2.38.1
From cd30217c9032419ebcf722c0bfc6b5ebfa3518d0 Mon Sep 17 00:00:00 2001
From: Norbert Pocs <npocs@redhat.com>
Date: Wed, 16 Nov 2022 16:51:02 +0100
Subject: [PATCH 3/5] Add flags for escape expand operation
Calling `ssh_options_apply` more times can result in an unwanted behaviour of
expanding the escape characters more times. Adding flags to check if the
expansion was already done on the current string variables.
Signed-off-by: Norbert Pocs <npocs@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
---
include/libssh/session.h | 7 ++++
src/options.c | 91 ++++++++++++++++++++++++----------------
src/session.c | 2 +
3 files changed, 63 insertions(+), 37 deletions(-)
diff --git a/include/libssh/session.h b/include/libssh/session.h
index e22b0d67..cf219c2a 100644
--- a/include/libssh/session.h
+++ b/include/libssh/session.h
@@ -93,6 +93,12 @@ enum ssh_pending_call_e {
#define SSH_OPT_FLAG_KBDINT_AUTH 0x4
#define SSH_OPT_FLAG_GSSAPI_AUTH 0x8
+/* Escape expansion of different variables */
+#define SSH_OPT_EXP_FLAG_KNOWNHOSTS 0x1
+#define SSH_OPT_EXP_FLAG_GLOBAL_KNOWNHOSTS 0x2
+#define SSH_OPT_EXP_FLAG_PROXYCOMMAND 0x4
+#define SSH_OPT_EXP_FLAG_IDENTITY 0x8
+
/* extensions flags */
/* negotiation enabled */
#define SSH_EXT_NEGOTIATION 0x01
@@ -232,6 +238,7 @@ struct ssh_session_struct {
char *gss_client_identity;
int gss_delegate_creds;
int flags;
+ int exp_flags;
int nodelay;
bool config_processed;
uint8_t options_seen[SOC_MAX];
diff --git a/src/options.c b/src/options.c
index bb085384..c566244b 100644
--- a/src/options.c
+++ b/src/options.c
@@ -730,6 +730,7 @@ int ssh_options_set(ssh_session session, enum ssh_options_e type,
ssh_set_error_oom(session);
return -1;
}
+ session->opts.exp_flags &= ~SSH_OPT_EXP_FLAG_KNOWNHOSTS;
}
break;
case SSH_OPTIONS_GLOBAL_KNOWNHOSTS:
@@ -751,6 +752,7 @@ int ssh_options_set(ssh_session session, enum ssh_options_e type,
ssh_set_error_oom(session);
return -1;
}
+ session->opts.exp_flags &= ~SSH_OPT_EXP_FLAG_GLOBAL_KNOWNHOSTS;
}
break;
case SSH_OPTIONS_TIMEOUT:
@@ -1014,6 +1016,7 @@ int ssh_options_set(ssh_session session, enum ssh_options_e type,
return -1;
}
session->opts.ProxyCommand = q;
+ session->opts.exp_flags &= ~SSH_OPT_EXP_FLAG_PROXYCOMMAND;
}
}
break;
@@ -1572,53 +1575,67 @@ int ssh_options_apply(ssh_session session)
}
}
- if (session->opts.knownhosts == NULL) {
- tmp = ssh_path_expand_escape(session, "%d/known_hosts");
- } else {
- tmp = ssh_path_expand_escape(session, session->opts.knownhosts);
- }
- if (tmp == NULL) {
- return -1;
+ if ((session->opts.exp_flags & SSH_OPT_EXP_FLAG_KNOWNHOSTS) == 0) {
+ if (session->opts.knownhosts == NULL) {
+ tmp = ssh_path_expand_escape(session, "%d/known_hosts");
+ } else {
+ tmp = ssh_path_expand_escape(session, session->opts.knownhosts);
+ }
+ if (tmp == NULL) {
+ return -1;
+ }
+ free(session->opts.knownhosts);
+ session->opts.knownhosts = tmp;
+ session->opts.exp_flags |= SSH_OPT_EXP_FLAG_KNOWNHOSTS;
}
- free(session->opts.knownhosts);
- session->opts.knownhosts = tmp;
- if (session->opts.global_knownhosts == NULL) {
- tmp = strdup("/etc/ssh/ssh_known_hosts");
- } else {
- tmp = ssh_path_expand_escape(session, session->opts.global_knownhosts);
- }
- if (tmp == NULL) {
- return -1;
+ if ((session->opts.exp_flags & SSH_OPT_EXP_FLAG_GLOBAL_KNOWNHOSTS) == 0) {
+ if (session->opts.global_knownhosts == NULL) {
+ tmp = strdup("/etc/ssh/ssh_known_hosts");
+ } else {
+ tmp = ssh_path_expand_escape(session,
+ session->opts.global_knownhosts);
+ }
+ if (tmp == NULL) {
+ return -1;
+ }
+ free(session->opts.global_knownhosts);
+ session->opts.global_knownhosts = tmp;
+ session->opts.exp_flags |= SSH_OPT_EXP_FLAG_GLOBAL_KNOWNHOSTS;
}
- free(session->opts.global_knownhosts);
- session->opts.global_knownhosts = tmp;
- if (session->opts.ProxyCommand != NULL) {
- char *p = NULL;
- size_t plen = strlen(session->opts.ProxyCommand) +
- 5 /* strlen("exec ") */;
- if (strncmp(session->opts.ProxyCommand, "exec ", 5) != 0) {
- p = malloc(plen + 1 /* \0 */);
- if (p == NULL) {
- return -1;
- }
+ if ((session->opts.exp_flags & SSH_OPT_EXP_FLAG_PROXYCOMMAND) == 0) {
+ if (session->opts.ProxyCommand != NULL) {
+ char *p = NULL;
+ size_t plen = strlen(session->opts.ProxyCommand) +
+ 5 /* strlen("exec ") */;
+
+ if (strncmp(session->opts.ProxyCommand, "exec ", 5) != 0) {
+ p = malloc(plen + 1 /* \0 */);
+ if (p == NULL) {
+ return -1;
+ }
- rc = snprintf(p, plen + 1, "exec %s", session->opts.ProxyCommand);
- if ((size_t)rc != plen) {
+ rc = snprintf(p, plen + 1, "exec %s", session->opts.ProxyCommand);
+ if ((size_t)rc != plen) {
+ free(p);
+ return -1;
+ }
+ tmp = ssh_path_expand_escape(session, p);
free(p);
- return -1;
+ } else {
+ tmp = ssh_path_expand_escape(session,
+ session->opts.ProxyCommand);
}
- }
- tmp = ssh_path_expand_escape(session, p);
- free(p);
- if (tmp == NULL) {
- return -1;
+ if (tmp == NULL) {
+ return -1;
+ }
+ free(session->opts.ProxyCommand);
+ session->opts.ProxyCommand = tmp;
+ session->opts.exp_flags |= SSH_OPT_EXP_FLAG_PROXYCOMMAND;
}
- free(session->opts.ProxyCommand);
- session->opts.ProxyCommand = tmp;
}
for (tmp = ssh_list_pop_head(char *, session->opts.identity_non_exp);
diff --git a/src/session.c b/src/session.c
index 34a492e4..06f6a26f 100644
--- a/src/session.c
+++ b/src/session.c
@@ -114,6 +114,8 @@ ssh_session ssh_new(void)
SSH_OPT_FLAG_KBDINT_AUTH |
SSH_OPT_FLAG_GSSAPI_AUTH;
+ session->opts.exp_flags = 0;
+
session->opts.identity = ssh_list_new();
if (session->opts.identity == NULL) {
goto err;
--
2.38.1
From ed58082f9706f2ab3bdeca24f632356b9bc325e6 Mon Sep 17 00:00:00 2001
From: Norbert Pocs <npocs@redhat.com>
Date: Wed, 16 Nov 2022 17:17:14 +0100
Subject: [PATCH 4/5] torture_options.c: Add identity test for ssh_options_copy
Test if the ssh_options_apply is called on session before ssh_options_copy,
then `opts.identity` ssh_list will be copied
Signed-off-by: Norbert Pocs <npocs@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
---
tests/unittests/torture_options.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/tests/unittests/torture_options.c b/tests/unittests/torture_options.c
index 3be2de8a..907cc8df 100644
--- a/tests/unittests/torture_options.c
+++ b/tests/unittests/torture_options.c
@@ -918,6 +918,34 @@ static void torture_options_copy(void **state)
sizeof(session->opts.options_seen));
ssh_free(new);
+
+ /* test if ssh_options_apply was called before ssh_options_copy
+ * the opts.identity list gets copied (percent expanded list) */
+ rv = ssh_options_apply(session);
+ assert_ssh_return_code(session, rv);
+
+ rv = ssh_options_copy(session, &new);
+ assert_ssh_return_code(session, rv);
+ assert_non_null(new);
+
+ it = ssh_list_get_iterator(session->opts.identity_non_exp);
+ assert_null(it);
+ it2 = ssh_list_get_iterator(new->opts.identity_non_exp);
+ assert_null(it2);
+
+ it = ssh_list_get_iterator(session->opts.identity);
+ assert_non_null(it);
+ it2 = ssh_list_get_iterator(new->opts.identity);
+ assert_non_null(it2);
+ while (it != NULL && it2 != NULL) {
+ assert_string_equal(it->data, it2->data);
+ it = it->next;
+ it2 = it2->next;
+ }
+ assert_null(it);
+ assert_null(it2);
+
+ ssh_free(new);
}
#define EXECUTABLE_NAME "test-exec"
--
2.38.1
From 89dd4a927b946d4df5c48073ca25cd843e0acde0 Mon Sep 17 00:00:00 2001
From: Norbert Pocs <npocs@redhat.com>
Date: Wed, 16 Nov 2022 17:18:49 +0100
Subject: [PATCH 5/5] torture_options.c: Add test for ssh_options_apply
Test that ssh_options_apply can be called multiple times without expanding
escape characters more than once. If the options are updated after calling
ssh_options_apply keep the last options.
Signed-off-by: Norbert Pocs <npocs@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
---
tests/unittests/torture_options.c | 165 ++++++++++++++++++++++++++++++
1 file changed, 165 insertions(+)
diff --git a/tests/unittests/torture_options.c b/tests/unittests/torture_options.c
index 907cc8df..ea63b45e 100644
--- a/tests/unittests/torture_options.c
+++ b/tests/unittests/torture_options.c
@@ -1332,6 +1332,170 @@ static void torture_options_caret_sign(void **state)
free(awaited);
}
+static void torture_options_apply (void **state) {
+ ssh_session session = *state;
+ struct ssh_list *awaited_list = NULL;
+ struct ssh_iterator *it1 = NULL, *it2 = NULL;
+ char *id = NULL;
+ int rc;
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_KNOWNHOSTS,
+ "%%d/.ssh/known_hosts");
+ assert_ssh_return_code(session, rc);
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_GLOBAL_KNOWNHOSTS,
+ "/etc/%%u/libssh/known_hosts");
+ assert_ssh_return_code(session, rc);
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_PROXYCOMMAND,
+ "exec echo \"Hello libssh %%d!\"");
+ assert_ssh_return_code(session, rc);
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_ADD_IDENTITY,
+ "%%d/do_not_expand");
+ assert_ssh_return_code(session, rc);
+
+ rc = ssh_options_apply(session);
+ assert_ssh_return_code(session, rc);
+
+ /* check that the values got expanded */
+ assert_true(session->opts.exp_flags & SSH_OPT_EXP_FLAG_KNOWNHOSTS);
+ assert_true(session->opts.exp_flags & SSH_OPT_EXP_FLAG_GLOBAL_KNOWNHOSTS);
+ assert_true(session->opts.exp_flags & SSH_OPT_EXP_FLAG_PROXYCOMMAND);
+ assert_true(ssh_list_count(session->opts.identity_non_exp) == 0);
+ assert_true(ssh_list_count(session->opts.identity) > 0);
+
+ /* should not change anything calling it again */
+ rc = ssh_options_apply(session);
+ assert_ssh_return_code(session, rc);
+
+ /* check that the expansion was done only once */
+ assert_string_equal(session->opts.knownhosts, "%d/.ssh/known_hosts");
+ assert_string_equal(session->opts.global_knownhosts,
+ "/etc/%u/libssh/known_hosts");
+ /* no exec should be added if there already is one */
+ assert_string_equal(session->opts.ProxyCommand,
+ "exec echo \"Hello libssh %d!\"");
+ assert_string_equal(session->opts.identity->root->data,
+ "%d/do_not_expand");
+
+ /* apply should keep the freshest setting */
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_KNOWNHOSTS,
+ "hello there");
+ assert_ssh_return_code(session, rc);
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_GLOBAL_KNOWNHOSTS,
+ "lorem ipsum");
+ assert_ssh_return_code(session, rc);
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_PROXYCOMMAND,
+ "mission_impossible");
+ assert_ssh_return_code(session, rc);
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_ADD_IDENTITY,
+ "007");
+ assert_ssh_return_code(session, rc);
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_ADD_IDENTITY,
+ "3");
+ assert_ssh_return_code(session, rc);
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_ADD_IDENTITY,
+ "2");
+ assert_ssh_return_code(session, rc);
+
+ rc = ssh_options_set(session,
+ SSH_OPTIONS_ADD_IDENTITY,
+ "1");
+ assert_ssh_return_code(session, rc);
+
+ /* check that flags show need of escape expansion */
+ assert_false(session->opts.exp_flags & SSH_OPT_EXP_FLAG_KNOWNHOSTS);
+ assert_false(session->opts.exp_flags & SSH_OPT_EXP_FLAG_GLOBAL_KNOWNHOSTS);
+ assert_false(session->opts.exp_flags & SSH_OPT_EXP_FLAG_PROXYCOMMAND);
+ assert_false(ssh_list_count(session->opts.identity_non_exp) == 0);
+
+ rc = ssh_options_apply(session);
+ assert_ssh_return_code(session, rc);
+
+ /* check that the values got expanded */
+ assert_true(session->opts.exp_flags & SSH_OPT_EXP_FLAG_KNOWNHOSTS);
+ assert_true(session->opts.exp_flags & SSH_OPT_EXP_FLAG_GLOBAL_KNOWNHOSTS);
+ assert_true(session->opts.exp_flags & SSH_OPT_EXP_FLAG_PROXYCOMMAND);
+ assert_true(ssh_list_count(session->opts.identity_non_exp) == 0);
+
+ assert_string_equal(session->opts.knownhosts, "hello there");
+ assert_string_equal(session->opts.global_knownhosts, "lorem ipsum");
+ /* check that the "exec " was added at the beginning */
+ assert_string_equal(session->opts.ProxyCommand, "exec mission_impossible");
+ assert_string_equal(session->opts.identity->root->data, "1");
+
+ /* check the order of the identity files after double expansion */
+ awaited_list = ssh_list_new();
+ /* append the new data in order */
+ id = strdup("1");
+ rc = ssh_list_append(awaited_list, id);
+ assert_int_equal(rc, SSH_OK);
+ id = strdup("2");
+ rc = ssh_list_append(awaited_list, id);
+ assert_int_equal(rc, SSH_OK);
+ id = strdup("3");
+ rc = ssh_list_append(awaited_list, id);
+ assert_int_equal(rc, SSH_OK);
+ id = strdup("007");
+ rc = ssh_list_append(awaited_list, id);
+ assert_int_equal(rc, SSH_OK);
+ id = strdup("%d/do_not_expand");
+ rc = ssh_list_append(awaited_list, id);
+ assert_int_equal(rc, SSH_OK);
+ /* append the defaults; this list is copied from ssh_new@src/session.c */
+ id = ssh_path_expand_escape(session, "%d/id_ed25519");
+ rc = ssh_list_append(awaited_list, id);
+ assert_int_equal(rc, SSH_OK);
+#ifdef HAVE_ECC
+ id = ssh_path_expand_escape(session, "%d/id_ecdsa");
+ rc = ssh_list_append(awaited_list, id);
+ assert_int_equal(rc, SSH_OK);
+#endif
+ id = ssh_path_expand_escape(session, "%d/id_rsa");
+ rc = ssh_list_append(awaited_list, id);
+ assert_int_equal(rc, SSH_OK);
+#ifdef HAVE_DSA
+ id = ssh_path_expand_escape(session, "%d/id_dsa");
+ rc = ssh_list_append(awaited_list, id);
+ assert_int_equal(rc, SSH_OK);
+#endif
+
+ assert_int_equal(ssh_list_count(awaited_list),
+ ssh_list_count(session->opts.identity));
+
+ it1 = ssh_list_get_iterator(awaited_list);
+ assert_non_null(it1);
+ it2 = ssh_list_get_iterator(session->opts.identity);
+ assert_non_null(it2);
+ while (it1 != NULL && it2 != NULL) {
+ assert_string_equal(it1->data, it2->data);
+
+ free((void*)it1->data);
+ it1 = it1->next;
+ it2 = it2->next;
+ }
+ assert_null(it1);
+ assert_null(it2);
+
+ ssh_list_free(awaited_list);
+}
+
#ifdef WITH_SERVER
const char template[] = "temp_dir_XXXXXX";
@@ -2132,6 +2296,7 @@ int torture_run_tests(void) {
setup, teardown),
cmocka_unit_test_setup_teardown(torture_options_caret_sign,
setup, teardown),
+ cmocka_unit_test_setup_teardown(torture_options_apply, setup, teardown),
};
#ifdef WITH_SERVER
--
2.38.1

98
SOURCES/pkcs11_test_fix.patch
Unescape View File

@ -0,0 +1,98 @@
diff --git a/tests/pkcs11/setup-softhsm-tokens.sh b/tests/pkcs11/setup-softhsm-tokens.sh
index 532c86a7..9050cea6 100755
--- a/tests/pkcs11/setup-softhsm-tokens.sh
+++ b/tests/pkcs11/setup-softhsm-tokens.sh
@@ -17,10 +17,10 @@ echo "OBJNAME: $OBJNAME"
echo "LOADPUBLIC: $LOADPUBLIC"
# Create temporary directory for tokens
-install -d -m 0755 $TESTDIR/db
+install -d -m 0755 "$TESTDIR/db"
# Create SoftHSM configuration file
-cat >$TESTDIR/softhsm.conf <<EOF
+cat >"$TESTDIR/softhsm.conf" <<EOF
directories.tokendir = $TESTDIR/db
objectstore.backend = file
log.level = DEBUG
@@ -28,12 +28,12 @@ EOF
export SOFTHSM2_CONF=$TESTDIR/softhsm.conf
-cat $TESTDIR/softhsm.conf
+cat "$TESTDIR/softhsm.conf"
#init
-cmd='softhsm2-util --init-token --label "$OBJNAME" --free --pin 1234 --so-pin 1234'
+cmd="softhsm2-util --init-token --label $OBJNAME --free --pin 1234 --so-pin 1234"
eval echo "$cmd"
-out=$(eval $cmd)
+out=$(eval "$cmd")
ret=$?
if [ $ret -ne 0 ]; then
echo "Init token failed"
@@ -41,10 +41,29 @@ if [ $ret -ne 0 ]; then
exit 1
fi
+find_library_path() {
+ echo "$@"
+ for _lib in "$@" ; do
+ if test -f "$_lib" ; then
+ LIBSOFTHSM_PATH="$_lib"
+ echo "Using libsofthsm path: $LIBSOFTHSM_PATH"
+ return
+ fi
+ done
+ echo "libsofthsm2.so not found"
+ exit 1
+}
+
+find_library_path \
+ /usr/lib64/libsofthsm2.so \
+ /usr/lib/libsofthsm2.so \
+ /usr/local/lib/softhsm/libsofthsm2.so \
+ /usr/lib/x86_64-linux-gnu/softhsm/libsofthsm2.so
+
#load private key
-cmd='p11tool --provider /usr/lib64/pkcs11/libsofthsm2.so --write --load-privkey "$PRIVKEY" --label "$OBJNAME" --login --set-pin=1234 "pkcs11:token="$OBJNAME""'
+cmd="p11tool --provider $LIBSOFTHSM_PATH --write --load-privkey $PRIVKEY --label $OBJNAME --login --set-pin=1234 \"pkcs11:token=$OBJNAME\""
eval echo "$cmd"
-out=$(eval $cmd)
+out=$(eval "$cmd")
ret=$?
if [ $ret -ne 0 ]; then
echo "Loading privkey failed"
@@ -52,15 +71,15 @@ if [ $ret -ne 0 ]; then
exit 1
fi
-cat $PUBKEY
+cat "$PUBKEY"
-ls -l $TESTDIR
+ls -l "$TESTDIR"
-if [ $LOADPUBLIC -ne 0 ]; then
+if [ "$LOADPUBLIC" -ne 0 ]; then
#load public key
- cmd='p11tool --provider /usr/lib64/pkcs11/libsofthsm2.so --write --load-pubkey "$PUBKEY" --label "$OBJNAME" --login --set-pin=1234 "pkcs11:token="$OBJNAME""'
+ cmd="p11tool --provider $LIBSOFTHSM_PATH --write --load-pubkey $PUBKEY --label $OBJNAME --login --set-pin=1234 \"pkcs11:token=$OBJNAME\""
eval echo "$cmd"
- out=$(eval $cmd)
+ out=$(eval "$cmd")
ret=$?
if [ $ret -ne 0 ]; then
echo "Loading pubkey failed"
@@ -69,9 +88,9 @@ if [ $LOADPUBLIC -ne 0 ]; then
fi
fi
-cmd='p11tool --list-all --login "pkcs11:token="$OBJNAME"" --set-pin=1234'
+cmd="p11tool --list-all --login \"pkcs11:token=$OBJNAME\" --set-pin=1234"
eval echo "$cmd"
-out=$(eval $cmd)
+out=$(eval "$cmd")
ret=$?
if [ $ret -ne 0 ]; then
echo "Loging failed"

1653
SOURCES/plus_sign.patch
View File

File diff suppressed because it is too large Load Diff

21
SOURCES/rekey_test_fixup.patch
Unescape View File

@ -0,0 +1,21 @@
diff --color -ru ../libssh-0.10.4/tests/client/torture_rekey.c ./tests/client/torture_rekey.c
--- ../libssh-0.10.4/tests/client/torture_rekey.c 2023-05-17 10:55:23.384684129 +0200
+++ ./tests/client/torture_rekey.c 2023-05-17 10:56:29.819334665 +0200
@@ -504,7 +504,7 @@
memset(data, 'A', 128);
for (i = 0; i < KEX_RETRY; i++) {
ssh_send_ignore(s->ssh.session, data);
- ssh_handle_packets(s->ssh.session, 100);
+ ssh_handle_packets(s->ssh.session, 1000);
c = s->ssh.session->current_crypto;
/* SHA256 len */
@@ -582,7 +582,7 @@
memset(data, 'A', 128);
for (i = 0; i < KEX_RETRY; i++) {
ssh_send_ignore(s->ssh.session, data);
- ssh_handle_packets(s->ssh.session, 100);
+ ssh_handle_packets(s->ssh.session, 1000);
c = s->ssh.session->current_crypto;
/* SHA256 len */

218
SPECS/libssh.spec
Unescape View File

@ -1,8 +1,8 @@
Name: libssh
Version: 0.10.6
Release: 8%{?dist}
Version: 0.10.4
Release: 12%{?dist}
Summary: A library implementing the SSH protocol
License: LGPL-2.1-or-later
License: LGPLv2+
URL: http://www.libssh.org
Source0: https://www.libssh.org/files/0.10/%{name}-%{version}.tar.xz
@ -10,33 +10,12 @@ Source1: https://www.libssh.org/files/0.10/%{name}-%{version}.tar.xz.asc
Source2: https://cryptomilk.org/gpgkey-8DFF53E18F2ABC8D8F3C92237EE0FC4DCC014E3D.gpg#/%{name}.keyring
Source3: libssh_client.config
Source4: libssh_server.config
Patch1: libssh-0.10.6-rekey-timeout.patch
# https://gitlab.com/libssh/libssh-mirror/-/merge_requests/431
Patch2: libssh-0.10.6-ipv6-hostname.patch
# Backport of the following commits from master before we will have the next 0.11.0 release:
# 9717b99136cbff850000378f70d1391f348713f9 libcrypto-compat.c/h: Remove no longer supported openssl versions
# 54c1703cb22b917222a6eb2a5d2fde22319d9b7a Move old DSA and RSA structs into EVP_PKEY
# 1eb3df5254a4348eae6edbc8a2bf08fef4015897 Get rid of the deprecated OpenSSL API
# 4fb5af1da5cb02933cb4cfa10f72484cca9ca961 src/pki_crypto.c: Fix errors introduced by EC rework
# 2539d72b7c8d03d54538533db5b346dad52d6db3 Add support for PKCS#11 provider in OpenSSL 3.0
# f8d7fee58842a11ad7a0386b4e829e36cd6e9432 pki: Use preference hints when loading keys from store
# e0011a197009897fcba09229e76940d9f5b12404 pki: Avoid freeing static groups/points on OpenSSL<3
# 9b263cf5e1da6e06f6ab90e3169409a7bed60835 pki_crypto: Fix ecdsa memory leak
# baa773d1cd6838af33fedcd65ddbb4e46e2b06c0 pki: Calculate missing CRT parameters when building RSA Key
# 2c876464ab0a27387a122c6a4b39ec187a6fc596 ecdh: Fix missing-prototype warning
# 2c918aad6763754bdffb84796b410e21f24bb7ec tests: Use /tmp for tmpdirs that contain sockets
Patch3: libssh-0.10.6-pkcs11-provider.patch
Patch4: libssh-0.10.6-no-engine.patch
# 7b89ff760a2c7119916eaa8fd6a62afbd15fc3ad
Patch5: libssh-0.10.6-rate-limit.patch
# c9cfeb9b838b801c3e2bb070c3db914e81ca4e68
Patch6: libssh-0.10.6-compress.patch
BuildRequires: cmake
BuildRequires: gcc-c++
BuildRequires: gnupg2
BuildRequires: openssl-devel
BuildRequires: openssl-pkcs11
BuildRequires: pkgconfig
BuildRequires: zlib-devel
BuildRequires: krb5-devel
@ -45,27 +24,35 @@ BuildRequires: pam_wrapper
BuildRequires: socket_wrapper
BuildRequires: nss_wrapper
BuildRequires: uid_wrapper
BuildRequires: priv_wrapper
BuildRequires: openssh-clients
BuildRequires: openssh-server
BuildRequires: nmap-ncat
BuildRequires: pkcs11-provider
BuildRequires: p11-kit-devel
BuildRequires: p11-kit-server
BuildRequires: opensc
BuildRequires: softhsm
BuildRequires: gnutls-utils
Requires: %{name}-config = %{version}-%{release}
Requires: crypto-policies
Recommends: crypto-policies
%ifarch aarch64 ppc64 ppc64le s390x x86_64 riscv64
%ifarch aarch64 ppc64 ppc64le s390x x86_64
Provides: libssh_threads.so.4()(64bit)
%else
Provides: libssh_threads.so.4
%endif
Patch1: coverity_scan.patch
Patch2: pkcs11_test_fix.patch
Patch3: loglevel.patch
Patch4: plus_sign.patch
Patch5: memory_leak.patch
Patch6: options_apply.patch
Patch7: enable_sk_keys_by_config.patch
Patch8: null_dereference_rekey.patch
Patch9: auth_bypass.patch
Patch10: covscan23.patch
Patch11: rekey_test_fixup.patch
Patch12: covscan23_1.patch
Patch13: CVE-2023-48795.patch
%description
The ssh library was designed to be used by programmers needing a working SSH
implementation by the mean of a library. The complete control of the client is
@ -77,7 +64,6 @@ third-party programs others than libcrypto (from openssl).
%package devel
Summary: Development files for %{name}
Requires: %{name}%{?_isa} = %{version}-%{release}
Requires: cmake-filesystem
%description devel
The %{name}-devel package contains libraries and header files for developing
@ -101,7 +87,6 @@ gpgv2 --quiet --keyring %{SOURCE2} %{SOURCE1} %{SOURCE0}
-DCLIENT_TESTING=ON \
-DSERVER_TESTING=ON \
-DWITH_PKCS11_URI=ON \
-DWITH_PKCS11_PROVIDER=ON \
-DGLOBAL_CLIENT_CONFIG="%{_sysconfdir}/libssh/libssh_client.config" \
-DGLOBAL_BIND_CONFIG="%{_sysconfdir}/libssh/libssh_server.config"
@ -146,6 +131,8 @@ popd
%files devel
%{_includedir}/libssh/
# own this to avoid dep on cmake -- rex
%dir %{_libdir}/cmake/
%{_libdir}/cmake/libssh/
%{_libdir}/pkgconfig/libssh.pc
%{_libdir}/libssh.so
@ -157,85 +144,98 @@ popd
%attr(0644,root,root) %config(noreplace) %{_sysconfdir}/libssh/libssh_server.config
%changelog
* Tue Nov 26 2024 MSVSphere Packaging Team <packager@msvsphere-os.ru> - 0.10.6-8
- Rebuilt for MSVSphere 10
* Tue Aug 20 2024 Jakub Jelen <jjelen@redhat.com> - 0.10.6-8
- Remove the dependency on engine.h
* Mon Jun 24 2024 Troy Dawson <tdawson@redhat.com> - 0.10.6-7
- Bump release for June 2024 mass rebuild
* Fri Jun 07 2024 David Abdurachmanov <davidlt@rivosinc.com> - 0.10.6-6
- Add riscv64
* Wed May 22 2024 Sahana Prasad <sahana@redhat.com> - 0.10.6-5
- Build libssh with pkcs11-provider instead of pkcs11 engine
- Resolves: RHEL-30437
* Thu Jan 25 2024 Fedora Release Engineering <releng@fedoraproject.org> - 0.10.6-4
- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
* Sun Jan 21 2024 Fedora Release Engineering <releng@fedoraproject.org> - 0.10.6-3
- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
* Fri Dec 22 2023 Jakub Jelen <jjelen@redhat.com> - 0.10.6-2
- Fix regression in IPv6 hosntames parsing
* Mon Dec 18 2023 Jakub Jelen <jjelen@redhat.com> - 0.10.6-1
- New upstream release fixing (CVE-2023-48795, CVE-2023-6004, CVE-2023-6918)
* Thu Jul 20 2023 Fedora Release Engineering <releng@fedoraproject.org> - 0.10.5-2
- Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild
* Fri May 05 2023 Orion Poplawski <orion@nwra.com> - 0.10.5-1
- Update to 0.10.5 (CVE-2023-1667 CVE-2023-2283)
- Have libssh-devel require cmake-filesystem
* Sun Mar 05 2023 Andreas Schneider <asn@redhat.com> - 0.10.4-4
- Update License to SPDX expression
* Thu Jan 19 2023 Fedora Release Engineering <releng@fedoraproject.org> - 0.10.4-3
- Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild
* Thu Oct 06 2022 Norbert Pocs <npocs@redhat.com> - 0.10.4-2
* Mon Jan 15 2024 Sahana Prasad <sahana@redhat.com> - 0.10.4-12
- Fix CVE-2023-48795 Prefix truncation attack on Binary Packet Protocol (BPP)
- Resolves: RHEL-20939
* Wed Jun 21 2023 Norbert Pocs <npocs@redhat.com> - 0.10.4-11
- Fix loglevel regression
- Related: rhbz#2182252, rhbz#2189740
* Mon May 22 2023 Norbert Pocs <npocs@redhat.com> - 0.10.4.10
- Fix null dereference issues found by covscan
- Related: rhbz#2182252, rhbz#2189740
* Wed May 10 2023 Norbert Pocs <npocs@redhat.com> - 0.10.4-9
- Fix CVE-2023-1667 and CVE-2023-2283
- Fix issues found by cosvcan
- Resolves: rhbz#2182252, rhbz#2189740
* Mon Jan 23 2023 Stanislav Zidek <szidek@redhat.com> - 0.10.4-8
+ libssh-0.10.4-8
- Extended CI to run internal tests in RHEL
- Related: rhbz#2160080
* Wed Jan 4 2023 Norbert Pocs <npocs@redhat.com> - 0.10.4-7
- Add sk-keys to configuration parsing allowing to turn on-off by config
- Related: rhbz#2026449
* Thu Dec 1 2022 Norbert Pocs <npocs@redhat.com> - 0.10.4-6
- Fix covscan error
- Remove unwanted test with yet unimplemented feature
- Related: rhbz#2137839, rhbz#2136824
* Thu Dec 01 2022 Stanislav Zidek <szidek@redhat.com> - 0.10.4-5
+ libssh-0.10.4-5
- Fixed CI configuration due to TMT changes
* Wed Nov 30 2022 Norbert Pocs <npocs@redhat.com> - 0.10.4-4
- Move loglevel closer to openssh loglevel
- Add openssh config feature of +,-,^ for algorithm lists
- Fix memory leaks of bignum
- Prevent multiple expansion of escape characters
- Resolves: rhbz#2132407, rhbz#2137839, rhbz#2144795, rhbz#2136824
* Tue Oct 4 2022 Norbert Pocs <npocs@redhat.com> - 0.10.4-3
- Enable pkcs11 support
* Wed Sep 07 2022 Andreas Schneider <asn@redhat.com> - 0.10.4-1
- Update to version 0.10.4
https://git.libssh.org/projects/libssh.git/tag/?h=libssh-0.10.4
* Fri Sep 02 2022 Andreas Schneider <asn@redhat.com> - 0.10.3-1
- Update to version 0.10.3
https://git.libssh.org/projects/libssh.git/tag/?h=libssh-0.10.3
https://git.libssh.org/projects/libssh.git/tag/?h=libssh-0.10.2
https://git.libssh.org/projects/libssh.git/tag/?h=libssh-0.10.1
https://git.libssh.org/projects/libssh.git/tag/?h=libssh-0.10.0
- Removed libssh-0.9.6-openssh-8.8p1-compat.patch
- resolves: rhbz#2121741
* Thu Jul 21 2022 Fedora Release Engineering <releng@fedoraproject.org> - 0.9.6-5
- Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild
* Fri Jan 28 2022 Jakub Jelen <jjelen@redhat.com> - 0.9.6-4
- Fix build-time tests to work with OpenSSH 8.8p1
* Thu Jan 20 2022 Fedora Release Engineering <releng@fedoraproject.org> - 0.9.6-3
- Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild
* Mon Jan 10 2022 Stephen Gallagher <sgallagh@redhat.com> - 0.9.6-2
- Skip broken torture_auth tests
* Wed Sep 15 2021 Norbert Pocs <npocs@redhat.com> - 0.9.6-1
- Fix broken libsofthsm path on i686
- Add missing bugzilla references from the rebase commit
- Related: rhbz#2026449
- Resolves: rhbz#1977913, rhbz#1975500
* Tue Sep 27 2022 Norbert Pocs <npocs@redhat.com> - 0.10.4-2
- Fix coverity scan issues
- Resolves: rhbz#2130126
* Mon Sep 19 2022 Norbert pocs <npocs@redhat.com> - 0.10.4-1
- Rebase to version 0.10.4
- Add pkcs11 support
- Disallow ssh-rsa key in FIPS mode
- Fix openssl KDF check at build
- ChangeLog was renamed to CHANGELOG
- Resolves: rhbz#2068475, rhbz#2026449, rhbz#2004021,
rhbz#1977913, rhbz#1975500
* Fri Nov 12 2021 Stanislav Zidek <szidek@redhat.com> - 0.9.6-3
+ libssh-0.9.6-3
- Disabled gating on osci.brew-build.revdeps.integration
Related: rhbz#2022034
* Thu Nov 11 2021 Stanislav Zidek <szidek@redhat.com> - 0.9.6-2
- STI, FMF, and gating fixes
Resolves: rhbz#2022034
* Tue Oct 05 2021 Norbert Pocs <npocs@redhat.com> - 0.9.6-1
- Fix CVE-CVE-2021-3634 libssh: possible heap-based buffer
overflow when rekeying
- Resolves: rhbz#1994600
- Fix static analyzer issues in rhbz#1938795
- Rebase to version 0.9.6
- Resolves: rhbz#1994607, rhbz#1938795, rhbz#2009669
* Mon Aug 09 2021 Mohan Boddu <mboddu@redhat.com> - 0.9.5-6
- Rebuilt for IMA sigs, glibc 2.34, aarch64 flags
Related: rhbz#1991688
* Wed Jun 16 2021 Mohan Boddu <mboddu@redhat.com> - 0.9.5-5
- Rebuilt for RHEL 9 BETA for openssl 3.0
Related: rhbz#1971065
* Tue Sep 14 2021 Sahana Prasad <sahana@redhat.com> - 0.9.5-4
- Rebuilt with OpenSSL 3.0.0
* Tue Apr 27 2021 Sahana Prasad <sahana@redhat.com> - 0.9.5-4
- Change crypto-policies from recommends to requires
Resolves: rhbz#1947863
* Thu Jul 22 2021 Fedora Release Engineering <releng@fedoraproject.org> - 0.9.5-3
- Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild
* Fri Apr 16 2021 Mohan Boddu <mboddu@redhat.com> - 0.9.5-3
- Rebuilt for RHEL 9 BETA on Apr 15th 2021. Related: rhbz#1947937
* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 0.9.5-2
- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild

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