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import samba-4.17.5-3.el8_8

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i8c changed/i8c/samba-4.17.5-3.el8_8
MSVSphere Packaging Team 1 year ago
parent 469730a155
commit fba19100f4
3 changed files with 805 additions and 1 deletions
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441
SOURCES/CVE-2023-3347-signing-4.17-01.patch
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@ -0,0 +1,441 @@
From 2c987aa203f12390c51810e4fbca6a176180a8b1 Mon Sep 17 00:00:00 2001
From: Ralph Boehme <slow@samba.org>
Date: Tue, 20 Jun 2023 12:46:31 +0200
Subject: [PATCH 1/5] CVE-2023-3347: CI: add a test for server-side mandatory
signing
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15397
Signed-off-by: Ralph Boehme <slow@samba.org>
---
.../samba3.smb2.session-require-signing | 1 +
selftest/target/Samba3.pm | 1 +
source3/selftest/tests.py | 2 +
source4/torture/smb2/session.c | 64 +++++++++++++++++++
source4/torture/smb2/smb2.c | 1 +
5 files changed, 69 insertions(+)
create mode 100644 selftest/knownfail.d/samba3.smb2.session-require-signing
diff --git a/selftest/knownfail.d/samba3.smb2.session-require-signing b/selftest/knownfail.d/samba3.smb2.session-require-signing
new file mode 100644
index 000000000000..53b7a7022a83
--- /dev/null
+++ b/selftest/knownfail.d/samba3.smb2.session-require-signing
@@ -0,0 +1 @@
+^samba3.smb2.session-require-signing.bug15397
diff --git a/selftest/target/Samba3.pm b/selftest/target/Samba3.pm
index 9c590547c943..3336c5b8e97c 100755
--- a/selftest/target/Samba3.pm
+++ b/selftest/target/Samba3.pm
@@ -1294,6 +1294,7 @@ sub setup_ad_member_idmap_rid
# values required for tests to succeed
create krb5 conf = no
map to guest = bad user
+ server signing = required
";
my $ret = $self->provision(
diff --git a/source3/selftest/tests.py b/source3/selftest/tests.py
index 04349c1f1f75..887bf6d52933 100755
--- a/source3/selftest/tests.py
+++ b/source3/selftest/tests.py
@@ -938,6 +938,8 @@ tests = base + raw + smb2 + rpc + unix + local + rap + nbt + idmap + vfs
# Certain tests fail when run against ad_member with MIT kerberos because the private krb5.conf overrides the provisioned lib/krb5.conf,
# ad_member_idmap_rid sets "create krb5.conf = no"
plansmbtorture4testsuite(t, "ad_member_idmap_rid", '//$SERVER/tmp -k yes -U$DC_USERNAME@$REALM%$DC_PASSWORD', 'krb5')
+ elif t == "smb2.session-require-signing":
+ plansmbtorture4testsuite(t, "ad_member_idmap_rid", '//$SERVER_IP/tmp -U$DC_USERNAME@$REALM%$DC_PASSWORD')
elif t == "rpc.lsa":
plansmbtorture4testsuite(t, "nt4_dc", '//$SERVER_IP/tmp -U$USERNAME%$PASSWORD', 'over ncacn_np ')
plansmbtorture4testsuite(t, "nt4_dc", 'ncacn_ip_tcp:$SERVER_IP -U$USERNAME%$PASSWORD', 'over ncacn_ip_tcp ')
diff --git a/source4/torture/smb2/session.c b/source4/torture/smb2/session.c
index 92f9e638ff47..e417008cad7a 100644
--- a/source4/torture/smb2/session.c
+++ b/source4/torture/smb2/session.c
@@ -5498,3 +5498,67 @@ struct torture_suite *torture_smb2_session_init(TALLOC_CTX *ctx)
return suite;
}
+
+static bool test_session_require_sign_bug15397(struct torture_context *tctx,
+ struct smb2_tree *_tree)
+{
+ const char *host = torture_setting_string(tctx, "host", NULL);
+ const char *share = torture_setting_string(tctx, "share", NULL);
+ struct cli_credentials *_creds = samba_cmdline_get_creds();
+ struct cli_credentials *creds = NULL;
+ struct smbcli_options options;
+ struct smb2_tree *tree = NULL;
+ uint8_t security_mode;
+ NTSTATUS status;
+ bool ok = true;
+
+ /*
+ * Setup our own connection so we can control the signing flags
+ */
+
+ creds = cli_credentials_shallow_copy(tctx, _creds);
+ torture_assert(tctx, creds != NULL, "cli_credentials_shallow_copy");
+
+ options = _tree->session->transport->options;
+ options.client_guid = GUID_random();
+ options.signing = SMB_SIGNING_IF_REQUIRED;
+
+ status = smb2_connect(tctx,
+ host,
+ lpcfg_smb_ports(tctx->lp_ctx),
+ share,
+ lpcfg_resolve_context(tctx->lp_ctx),
+ creds,
+ &tree,
+ tctx->ev,
+ &options,
+ lpcfg_socket_options(tctx->lp_ctx),
+ lpcfg_gensec_settings(tctx, tctx->lp_ctx));
+ torture_assert_ntstatus_ok_goto(tctx, status, ok, done,
+ "smb2_connect failed");
+
+ security_mode = smb2cli_session_security_mode(tree->session->smbXcli);
+
+ torture_assert_int_equal_goto(
+ tctx,
+ security_mode,
+ SMB2_NEGOTIATE_SIGNING_REQUIRED | SMB2_NEGOTIATE_SIGNING_ENABLED,
+ ok,
+ done,
+ "Signing not required");
+
+done:
+ return ok;
+}
+
+struct torture_suite *torture_smb2_session_req_sign_init(TALLOC_CTX *ctx)
+{
+ struct torture_suite *suite =
+ torture_suite_create(ctx, "session-require-signing");
+
+ torture_suite_add_1smb2_test(suite, "bug15397",
+ test_session_require_sign_bug15397);
+
+ suite->description = talloc_strdup(suite, "SMB2-SESSION require signing tests");
+ return suite;
+}
diff --git a/source4/torture/smb2/smb2.c b/source4/torture/smb2/smb2.c
index c717db50b70c..8621f09d820c 100644
--- a/source4/torture/smb2/smb2.c
+++ b/source4/torture/smb2/smb2.c
@@ -189,6 +189,7 @@ NTSTATUS torture_smb2_init(TALLOC_CTX *ctx)
torture_suite_add_suite(suite, torture_smb2_sharemode_init(suite));
torture_suite_add_1smb2_test(suite, "hold-oplock", test_smb2_hold_oplock);
torture_suite_add_suite(suite, torture_smb2_session_init(suite));
+ torture_suite_add_suite(suite, torture_smb2_session_req_sign_init(suite));
torture_suite_add_suite(suite, torture_smb2_replay_init(suite));
torture_suite_add_simple_test(suite, "dosmode", torture_smb2_dosmode);
torture_suite_add_simple_test(suite, "async_dosmode", torture_smb2_async_dosmode);
--
2.40.0
From dfde1691d336fe658857e576cec0debd3a2450b9 Mon Sep 17 00:00:00 2001
From: Ralph Boehme <slow@samba.org>
Date: Wed, 21 Jun 2023 15:06:12 +0200
Subject: [PATCH 2/5] CVE-2023-3347: smbd: pass lp_ctx to
smb[1|2]_srv_init_signing()
No change in behaviour.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15397
Signed-off-by: Ralph Boehme <slow@samba.org>
---
source3/smbd/proto.h | 3 ++-
source3/smbd/smb1_signing.c | 10 ++--------
source3/smbd/smb1_signing.h | 3 ++-
source3/smbd/smb2_signing.c | 25 +++++++++++++++----------
4 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/source3/smbd/proto.h b/source3/smbd/proto.h
index c4a330145151..67cc5e8a380a 100644
--- a/source3/smbd/proto.h
+++ b/source3/smbd/proto.h
@@ -52,7 +52,8 @@ struct dcesrv_context;
/* The following definitions come from smbd/smb2_signing.c */
-bool smb2_srv_init_signing(struct smbXsrv_connection *conn);
+bool smb2_srv_init_signing(struct loadparm_context *lp_ctx,
+ struct smbXsrv_connection *conn);
bool srv_init_signing(struct smbXsrv_connection *conn);
/* The following definitions come from smbd/aio.c */
diff --git a/source3/smbd/smb1_signing.c b/source3/smbd/smb1_signing.c
index 6bcb0629c4f0..aa3027d53182 100644
--- a/source3/smbd/smb1_signing.c
+++ b/source3/smbd/smb1_signing.c
@@ -170,18 +170,13 @@ static void smbd_shm_signing_free(TALLOC_CTX *mem_ctx, void *ptr)
Called by server negprot when signing has been negotiated.
************************************************************/
-bool smb1_srv_init_signing(struct smbXsrv_connection *conn)
+bool smb1_srv_init_signing(struct loadparm_context *lp_ctx,
+ struct smbXsrv_connection *conn)
{
bool allowed = true;
bool desired;
bool mandatory = false;
- struct loadparm_context *lp_ctx = loadparm_init_s3(conn, loadparm_s3_helpers());
- if (lp_ctx == NULL) {
- DEBUG(10, ("loadparm_init_s3 failed\n"));
- return false;
- }
-
/*
* if the client and server allow signing,
* we desire to use it.
@@ -195,7 +190,6 @@ bool smb1_srv_init_signing(struct smbXsrv_connection *conn)
*/
desired = lpcfg_server_signing_allowed(lp_ctx, &mandatory);
- talloc_unlink(conn, lp_ctx);
if (lp_async_smb_echo_handler()) {
struct smbd_shm_signing *s;
diff --git a/source3/smbd/smb1_signing.h b/source3/smbd/smb1_signing.h
index 56c59c5bbc21..26f60420dfa8 100644
--- a/source3/smbd/smb1_signing.h
+++ b/source3/smbd/smb1_signing.h
@@ -33,4 +33,5 @@ bool smb1_srv_is_signing_negotiated(struct smbXsrv_connection *conn);
void smb1_srv_set_signing(struct smbXsrv_connection *conn,
const DATA_BLOB user_session_key,
const DATA_BLOB response);
-bool smb1_srv_init_signing(struct smbXsrv_connection *conn);
+bool smb1_srv_init_signing(struct loadparm_context *lp_ctx,
+ struct smbXsrv_connection *conn);
diff --git a/source3/smbd/smb2_signing.c b/source3/smbd/smb2_signing.c
index 4691ef4d6130..c1f876f9cd74 100644
--- a/source3/smbd/smb2_signing.c
+++ b/source3/smbd/smb2_signing.c
@@ -26,32 +26,37 @@
#include "lib/param/param.h"
#include "smb2_signing.h"
-bool smb2_srv_init_signing(struct smbXsrv_connection *conn)
+bool smb2_srv_init_signing(struct loadparm_context *lp_ctx,
+ struct smbXsrv_connection *conn)
{
- struct loadparm_context *lp_ctx = loadparm_init_s3(conn, loadparm_s3_helpers());
- if (lp_ctx == NULL) {
- DBG_DEBUG("loadparm_init_s3 failed\n");
- return false;
- }
-
/*
* For SMB2 all we need to know is if signing is mandatory.
* It is always allowed and desired, whatever the smb.conf says.
*/
(void)lpcfg_server_signing_allowed(lp_ctx, &conn->smb2.signing_mandatory);
- talloc_unlink(conn, lp_ctx);
return true;
}
bool srv_init_signing(struct smbXsrv_connection *conn)
{
+ struct loadparm_context *lp_ctx = NULL;
+ bool ok;
+
+ lp_ctx = loadparm_init_s3(conn, loadparm_s3_helpers());
+ if (lp_ctx == NULL) {
+ DBG_DEBUG("loadparm_init_s3 failed\n");
+ return false;
+ }
+
#if defined(WITH_SMB1SERVER)
if (conn->protocol >= PROTOCOL_SMB2_02) {
#endif
- return smb2_srv_init_signing(conn);
+ ok = smb2_srv_init_signing(lp_ctx, conn);
#if defined(WITH_SMB1SERVER)
} else {
- return smb1_srv_init_signing(conn);
+ ok = smb1_srv_init_signing(lp_ctx, conn);
}
#endif
+ talloc_unlink(conn, lp_ctx);
+ return ok;
}
--
2.40.0
From fd5f7d15869b67c41f681539348f7917a8c2fc0c Mon Sep 17 00:00:00 2001
From: Ralph Boehme <slow@samba.org>
Date: Wed, 21 Jun 2023 15:10:58 +0200
Subject: [PATCH 3/5] CVE-2023-3347: smbd: inline smb2_srv_init_signing() code
in srv_init_signing()
It's now a one-line function, imho the overall code is simpler if that code is
just inlined.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15397
Signed-off-by: Ralph Boehme <slow@samba.org>
---
source3/smbd/proto.h | 2 --
source3/smbd/smb2_signing.c | 19 ++++++-------------
2 files changed, 6 insertions(+), 15 deletions(-)
diff --git a/source3/smbd/proto.h b/source3/smbd/proto.h
index 67cc5e8a380a..8075f4e567e3 100644
--- a/source3/smbd/proto.h
+++ b/source3/smbd/proto.h
@@ -52,8 +52,6 @@ struct dcesrv_context;
/* The following definitions come from smbd/smb2_signing.c */
-bool smb2_srv_init_signing(struct loadparm_context *lp_ctx,
- struct smbXsrv_connection *conn);
bool srv_init_signing(struct smbXsrv_connection *conn);
/* The following definitions come from smbd/aio.c */
diff --git a/source3/smbd/smb2_signing.c b/source3/smbd/smb2_signing.c
index c1f876f9cd74..ef4a54d57107 100644
--- a/source3/smbd/smb2_signing.c
+++ b/source3/smbd/smb2_signing.c
@@ -26,21 +26,10 @@
#include "lib/param/param.h"
#include "smb2_signing.h"
-bool smb2_srv_init_signing(struct loadparm_context *lp_ctx,
- struct smbXsrv_connection *conn)
-{
- /*
- * For SMB2 all we need to know is if signing is mandatory.
- * It is always allowed and desired, whatever the smb.conf says.
- */
- (void)lpcfg_server_signing_allowed(lp_ctx, &conn->smb2.signing_mandatory);
- return true;
-}
-
bool srv_init_signing(struct smbXsrv_connection *conn)
{
struct loadparm_context *lp_ctx = NULL;
- bool ok;
+ bool ok = true;
lp_ctx = loadparm_init_s3(conn, loadparm_s3_helpers());
if (lp_ctx == NULL) {
@@ -51,7 +40,11 @@ bool srv_init_signing(struct smbXsrv_connection *conn)
#if defined(WITH_SMB1SERVER)
if (conn->protocol >= PROTOCOL_SMB2_02) {
#endif
- ok = smb2_srv_init_signing(lp_ctx, conn);
+ /*
+ * For SMB2 all we need to know is if signing is mandatory.
+ * It is always allowed and desired, whatever the smb.conf says.
+ */
+ (void)lpcfg_server_signing_allowed(lp_ctx, &conn->smb2.signing_mandatory);
#if defined(WITH_SMB1SERVER)
} else {
ok = smb1_srv_init_signing(lp_ctx, conn);
--
2.40.0
From afe8b8d4f55ac330683645dad149a1691c15e2bd Mon Sep 17 00:00:00 2001
From: Ralph Boehme <slow@samba.org>
Date: Tue, 20 Jun 2023 18:13:23 +0200
Subject: [PATCH 4/5] CVE-2023-3347: smbd: remove comment in
smbd_smb2_request_process_negprot()
This is just going to bitrot. Anyone who's interested can just grep for
"signing_mandatory" and look up what it does.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15397
Signed-off-by: Ralph Boehme <slow@samba.org>
---
source3/smbd/smb2_negprot.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/source3/smbd/smb2_negprot.c b/source3/smbd/smb2_negprot.c
index baddbecaade9..685a1460cef4 100644
--- a/source3/smbd/smb2_negprot.c
+++ b/source3/smbd/smb2_negprot.c
@@ -361,12 +361,6 @@ NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req)
}
security_mode = SMB2_NEGOTIATE_SIGNING_ENABLED;
- /*
- * We use xconn->smb2.signing_mandatory set up via
- * srv_init_signing() -> smb2_srv_init_signing().
- * This calls lpcfg_server_signing_allowed() to get the correct
- * defaults, e.g. signing_required for an ad_dc.
- */
if (xconn->smb2.signing_mandatory) {
security_mode |= SMB2_NEGOTIATE_SIGNING_REQUIRED;
}
--
2.40.0
From d01483dba47134ee1cc959d3e52ef2af1b1221d8 Mon Sep 17 00:00:00 2001
From: Ralph Boehme <slow@samba.org>
Date: Tue, 20 Jun 2023 15:33:02 +0200
Subject: [PATCH 5/5] CVE-2023-3347: smbd: fix "server signing = mandatory"
This was broken by commit 1f3f6e20dc086a36de52bffd0bc36e15fb19e1c6 because when
calling srv_init_signing() very early after accepting the connection in
smbd_add_connection(), conn->protocol is still PROTOCOL_NONE.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15397
Signed-off-by: Ralph Boehme <slow@samba.org>
---
.../samba3.smb2.session-require-signing | 1 -
source3/smbd/smb2_signing.c | 19 ++++++++-----------
2 files changed, 8 insertions(+), 12 deletions(-)
delete mode 100644 selftest/knownfail.d/samba3.smb2.session-require-signing
diff --git a/selftest/knownfail.d/samba3.smb2.session-require-signing b/selftest/knownfail.d/samba3.smb2.session-require-signing
deleted file mode 100644
index 53b7a7022a83..000000000000
--- a/selftest/knownfail.d/samba3.smb2.session-require-signing
+++ /dev/null
@@ -1 +0,0 @@
-^samba3.smb2.session-require-signing.bug15397
diff --git a/source3/smbd/smb2_signing.c b/source3/smbd/smb2_signing.c
index ef4a54d57107..73d07380dfa1 100644
--- a/source3/smbd/smb2_signing.c
+++ b/source3/smbd/smb2_signing.c
@@ -37,19 +37,16 @@ bool srv_init_signing(struct smbXsrv_connection *conn)
return false;
}
+ /*
+ * For SMB2 all we need to know is if signing is mandatory.
+ * It is always allowed and desired, whatever the smb.conf says.
+ */
+ (void)lpcfg_server_signing_allowed(lp_ctx, &conn->smb2.signing_mandatory);
+
#if defined(WITH_SMB1SERVER)
- if (conn->protocol >= PROTOCOL_SMB2_02) {
-#endif
- /*
- * For SMB2 all we need to know is if signing is mandatory.
- * It is always allowed and desired, whatever the smb.conf says.
- */
- (void)lpcfg_server_signing_allowed(lp_ctx, &conn->smb2.signing_mandatory);
-#if defined(WITH_SMB1SERVER)
- } else {
- ok = smb1_srv_init_signing(lp_ctx, conn);
- }
+ ok = smb1_srv_init_signing(lp_ctx, conn);
#endif
+
talloc_unlink(conn, lp_ctx);
return ok;
}
--
2.40.0

356
SOURCES/samba-4.17-fix-netlogon-capability-level2.patch
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@ -0,0 +1,356 @@
From 5a0951ffae8e030dfabad6f6eac9d2b48aba7a5b Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 15 Jul 2023 17:20:32 +0200
Subject: [PATCH 1/4] netlogon.idl: add support for netr_LogonGetCapabilities
response level 2
We don't have any documentation about this yet, but tests against
a Windows Server 2022 patched with KB5028166 revealed that
the response for query_level=2 is exactly the same as
for querey_level=1.
Until we know the reason for query_level=2 we won't
use it as client nor support it in the server, but
we want ndrdump to work.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15418
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 5f87888ed53320538cf773d64868390d8641a40e)
---
librpc/idl/netlogon.idl | 1 +
1 file changed, 1 insertion(+)
diff --git a/librpc/idl/netlogon.idl b/librpc/idl/netlogon.idl
index e563e114900b..c77151af26b1 100644
--- a/librpc/idl/netlogon.idl
+++ b/librpc/idl/netlogon.idl
@@ -1241,6 +1241,7 @@ interface netlogon
/* Function 0x15 */
typedef [switch_type(uint32)] union {
[case(1)] netr_NegotiateFlags server_capabilities;
+ [case(2)] netr_NegotiateFlags server_capabilities;
} netr_Capabilities;
NTSTATUS netr_LogonGetCapabilities(
--
2.34.1
From c28a4312122189740a6e02f1a9e4394d6c9c7f2e Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 15 Jul 2023 17:25:05 +0200
Subject: [PATCH 2/4] s4:torture/rpc: let rpc.schannel also check
netr_LogonGetCapabilities with different levels
The important change it that we expect DCERPC_NCA_S_FAULT_INVALID_TAG
for unsupported query_levels, we allow it to work with servers
with or without support for query_level=2.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15418
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 404ce08e9088968311c714e756f5d58ce2cef715)
---
.../knownfail.d/netr_LogonGetCapabilities | 3 +
source4/torture/rpc/netlogon.c | 77 ++++++++++++++++++-
2 files changed, 79 insertions(+), 1 deletion(-)
create mode 100644 selftest/knownfail.d/netr_LogonGetCapabilities
diff --git a/selftest/knownfail.d/netr_LogonGetCapabilities b/selftest/knownfail.d/netr_LogonGetCapabilities
new file mode 100644
index 000000000000..30aadf3bb9d5
--- /dev/null
+++ b/selftest/knownfail.d/netr_LogonGetCapabilities
@@ -0,0 +1,3 @@
+^samba3.rpc.schannel.*\.schannel\(nt4_dc
+^samba3.rpc.schannel.*\.schannel\(ad_dc
+^samba4.rpc.schannel.*\.schannel\(ad_dc
diff --git a/source4/torture/rpc/netlogon.c b/source4/torture/rpc/netlogon.c
index 1f068eb78265..a3d190f13dd8 100644
--- a/source4/torture/rpc/netlogon.c
+++ b/source4/torture/rpc/netlogon.c
@@ -2056,8 +2056,47 @@ bool test_netlogon_capabilities(struct dcerpc_pipe *p, struct torture_context *t
r.out.capabilities = &capabilities;
r.out.return_authenticator = &return_auth;
- torture_comment(tctx, "Testing LogonGetCapabilities\n");
+ torture_comment(tctx, "Testing LogonGetCapabilities with query_level=0\n");
+ r.in.query_level = 0;
+ ZERO_STRUCT(return_auth);
+
+ /*
+ * we need to operate on a temporary copy of creds
+ * because dcerpc_netr_LogonGetCapabilities with
+ * an unknown query level returns DCERPC_NCA_S_FAULT_INVALID_TAG
+ * => NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE
+ * without looking a the authenticator.
+ */
+ tmp_creds = *creds;
+ netlogon_creds_client_authenticator(&tmp_creds, &auth);
+
+ status = dcerpc_netr_LogonGetCapabilities_r(b, tctx, &r);
+ torture_assert_ntstatus_equal(tctx, status, NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE,
+ "LogonGetCapabilities query_level=0 failed");
+
+ torture_comment(tctx, "Testing LogonGetCapabilities with query_level=3\n");
+
+ r.in.query_level = 3;
+ ZERO_STRUCT(return_auth);
+
+ /*
+ * we need to operate on a temporary copy of creds
+ * because dcerpc_netr_LogonGetCapabilities with
+ * an unknown query level returns DCERPC_NCA_S_FAULT_INVALID_TAG
+ * => NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE
+ * without looking a the authenticator.
+ */
+ tmp_creds = *creds;
+ netlogon_creds_client_authenticator(&tmp_creds, &auth);
+
+ status = dcerpc_netr_LogonGetCapabilities_r(b, tctx, &r);
+ torture_assert_ntstatus_equal(tctx, status, NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE,
+ "LogonGetCapabilities query_level=0 failed");
+
+ torture_comment(tctx, "Testing LogonGetCapabilities with query_level=1\n");
+
+ r.in.query_level = 1;
ZERO_STRUCT(return_auth);
/*
@@ -2077,6 +2116,42 @@ bool test_netlogon_capabilities(struct dcerpc_pipe *p, struct torture_context *t
*creds = tmp_creds;
+ torture_assert(tctx, netlogon_creds_client_check(creds,
+ &r.out.return_authenticator->cred),
+ "Credential chaining failed");
+
+ torture_assert_int_equal(tctx, creds->negotiate_flags,
+ capabilities.server_capabilities,
+ "negotiate flags");
+
+ torture_comment(tctx, "Testing LogonGetCapabilities with query_level=2\n");
+
+ r.in.query_level = 2;
+ ZERO_STRUCT(return_auth);
+
+ /*
+ * we need to operate on a temporary copy of creds
+ * because dcerpc_netr_LogonGetCapabilities with
+ * an query level 2 may returns DCERPC_NCA_S_FAULT_INVALID_TAG
+ * => NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE
+ * without looking a the authenticator.
+ */
+ tmp_creds = *creds;
+ netlogon_creds_client_authenticator(&tmp_creds, &auth);
+
+ status = dcerpc_netr_LogonGetCapabilities_r(b, tctx, &r);
+ if (NT_STATUS_EQUAL(status, NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE)) {
+ /*
+ * an server without KB5028166 returns
+ * DCERPC_NCA_S_FAULT_INVALID_TAG =>
+ * NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE
+ */
+ return true;
+ }
+ torture_assert_ntstatus_ok(tctx, status, "LogonGetCapabilities query_level=2 failed");
+
+ *creds = tmp_creds;
+
torture_assert(tctx, netlogon_creds_client_check(creds,
&r.out.return_authenticator->cred),
"Credential chaining failed");
--
2.34.1
From 4c4c630fe99c253f3400fc7a4542178eba9d0aa7 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 15 Jul 2023 16:11:48 +0200
Subject: [PATCH 3/4] s4:rpc_server:netlogon: generate FAULT_INVALID_TAG for
invalid netr_LogonGetCapabilities levels
This is important as Windows clients with KB5028166 seem to
call netr_LogonGetCapabilities with query_level=2 after
a call with query_level=1.
An unpatched Windows Server returns DCERPC_NCA_S_FAULT_INVALID_TAG
for query_level values other than 1.
While Samba tries to return NT_STATUS_NOT_SUPPORTED, but
later fails to marshall the response, which results
in DCERPC_FAULT_BAD_STUB_DATA instead.
Because we don't have any documentation for level 2 yet,
we just try to behave like an unpatched server and
generate DCERPC_NCA_S_FAULT_INVALID_TAG instead of
DCERPC_FAULT_BAD_STUB_DATA.
Which allows patched Windows clients to keep working
against a Samba DC.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15418
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit d5f1097b6220676d56ed5fc6707acf667b704518)
---
.../knownfail.d/netr_LogonGetCapabilities | 2 --
source4/rpc_server/netlogon/dcerpc_netlogon.c | 28 ++++++++++++++++---
2 files changed, 24 insertions(+), 6 deletions(-)
diff --git a/selftest/knownfail.d/netr_LogonGetCapabilities b/selftest/knownfail.d/netr_LogonGetCapabilities
index 30aadf3bb9d5..99c7ac711ede 100644
--- a/selftest/knownfail.d/netr_LogonGetCapabilities
+++ b/selftest/knownfail.d/netr_LogonGetCapabilities
@@ -1,3 +1 @@
^samba3.rpc.schannel.*\.schannel\(nt4_dc
-^samba3.rpc.schannel.*\.schannel\(ad_dc
-^samba4.rpc.schannel.*\.schannel\(ad_dc
diff --git a/source4/rpc_server/netlogon/dcerpc_netlogon.c b/source4/rpc_server/netlogon/dcerpc_netlogon.c
index 314b469a718a..e203e04143d7 100644
--- a/source4/rpc_server/netlogon/dcerpc_netlogon.c
+++ b/source4/rpc_server/netlogon/dcerpc_netlogon.c
@@ -2359,6 +2359,30 @@ static NTSTATUS dcesrv_netr_LogonGetCapabilities(struct dcesrv_call_state *dce_c
struct netlogon_creds_CredentialState *creds;
NTSTATUS status;
+ switch (r->in.query_level) {
+ case 1:
+ break;
+ case 2:
+ /*
+ * Until we know the details behind KB5028166
+ * just return DCERPC_NCA_S_FAULT_INVALID_TAG
+ * like an unpatched Windows Server.
+ */
+ FALL_THROUGH;
+ default:
+ /*
+ * There would not be a way to marshall the
+ * the response. Which would mean our final
+ * ndr_push would fail an we would return
+ * an RPC-level fault with DCERPC_FAULT_BAD_STUB_DATA.
+ *
+ * But it's important to match a Windows server
+ * especially before KB5028166, see also our bug #15418
+ * Otherwise Windows client would stop talking to us.
+ */
+ DCESRV_FAULT(DCERPC_NCA_S_FAULT_INVALID_TAG);
+ }
+
status = dcesrv_netr_creds_server_step_check(dce_call,
mem_ctx,
r->in.computer_name,
@@ -2370,10 +2394,6 @@ static NTSTATUS dcesrv_netr_LogonGetCapabilities(struct dcesrv_call_state *dce_c
}
NT_STATUS_NOT_OK_RETURN(status);
- if (r->in.query_level != 1) {
- return NT_STATUS_NOT_SUPPORTED;
- }
-
r->out.capabilities->server_capabilities = creds->negotiate_flags;
return NT_STATUS_OK;
--
2.34.1
From 44fb6686eee8f1c8767eee6a26edc215dccbc766 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 15 Jul 2023 16:11:48 +0200
Subject: [PATCH 4/4] s3:rpc_server:netlogon: generate FAULT_INVALID_TAG for
invalid netr_LogonGetCapabilities levels
This is important as Windows clients with KB5028166 seem to
call netr_LogonGetCapabilities with query_level=2 after
a call with query_level=1.
An unpatched Windows Server returns DCERPC_NCA_S_FAULT_INVALID_TAG
for query_level values other than 1.
While Samba tries to return NT_STATUS_NOT_SUPPORTED, but
later fails to marshall the response, which results
in DCERPC_FAULT_BAD_STUB_DATA instead.
Because we don't have any documentation for level 2 yet,
we just try to behave like an unpatched server and
generate DCERPC_NCA_S_FAULT_INVALID_TAG instead of
DCERPC_FAULT_BAD_STUB_DATA.
Which allows patched Windows clients to keep working
against a Samba DC.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15418
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Mon Jul 17 07:35:09 UTC 2023 on atb-devel-224
(cherry picked from commit dfeabce44fbb78083fbbb2aa634fc4172cf83db9)
---
.../knownfail.d/netr_LogonGetCapabilities | 1 -
source3/rpc_server/netlogon/srv_netlog_nt.c | 29 ++++++++++++++++---
2 files changed, 25 insertions(+), 5 deletions(-)
delete mode 100644 selftest/knownfail.d/netr_LogonGetCapabilities
diff --git a/selftest/knownfail.d/netr_LogonGetCapabilities b/selftest/knownfail.d/netr_LogonGetCapabilities
deleted file mode 100644
index 99c7ac711ede..000000000000
--- a/selftest/knownfail.d/netr_LogonGetCapabilities
+++ /dev/null
@@ -1 +0,0 @@
-^samba3.rpc.schannel.*\.schannel\(nt4_dc
diff --git a/source3/rpc_server/netlogon/srv_netlog_nt.c b/source3/rpc_server/netlogon/srv_netlog_nt.c
index 83318fff7532..c91eeed06b8d 100644
--- a/source3/rpc_server/netlogon/srv_netlog_nt.c
+++ b/source3/rpc_server/netlogon/srv_netlog_nt.c
@@ -2286,6 +2286,31 @@ NTSTATUS _netr_LogonGetCapabilities(struct pipes_struct *p,
struct netlogon_creds_CredentialState *creds;
NTSTATUS status;
+ switch (r->in.query_level) {
+ case 1:
+ break;
+ case 2:
+ /*
+ * Until we know the details behind KB5028166
+ * just return DCERPC_NCA_S_FAULT_INVALID_TAG
+ * like an unpatched Windows Server.
+ */
+ FALL_THROUGH;
+ default:
+ /*
+ * There would not be a way to marshall the
+ * the response. Which would mean our final
+ * ndr_push would fail an we would return
+ * an RPC-level fault with DCERPC_FAULT_BAD_STUB_DATA.
+ *
+ * But it's important to match a Windows server
+ * especially before KB5028166, see also our bug #15418
+ * Otherwise Windows client would stop talking to us.
+ */
+ p->fault_state = DCERPC_NCA_S_FAULT_INVALID_TAG;
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
become_root();
status = dcesrv_netr_creds_server_step_check(p->dce_call,
p->mem_ctx,
@@ -2298,10 +2323,6 @@ NTSTATUS _netr_LogonGetCapabilities(struct pipes_struct *p,
return status;
}
- if (r->in.query_level != 1) {
- return NT_STATUS_NOT_SUPPORTED;
- }
-
r->out.capabilities->server_capabilities = creds->negotiate_flags;
return NT_STATUS_OK;
--
2.34.1

9
SPECS/samba.spec
Unescape View File

@ -135,7 +135,7 @@
%define samba_requires_eq() %(LC_ALL="C" echo '%*' | xargs -r rpm -q --qf 'Requires: %%{name} = %%{epoch}:%%{version}\\n' | sed -e 's/ (none):/ /' -e 's/ 0:/ /' | grep -v "is not") %define samba_requires_eq() %(LC_ALL="C" echo '%*' | xargs -r rpm -q --qf 'Requires: %%{name} = %%{epoch}:%%{version}\\n' | sed -e 's/ (none):/ /' -e 's/ 0:/ /' | grep -v "is not")
%global samba_version 4.17.5 %global samba_version 4.17.5
%global baserelease 2 %global baserelease 3
# This should be rc1 or %%nil # This should be rc1 or %%nil
%global pre_release %nil %global pre_release %nil
@ -231,6 +231,9 @@ Source17: samba-usershares-systemd-sysusers.conf
Source201: README.downgrade Source201: README.downgrade
Source202: samba.abignore Source202: samba.abignore
Patch0: samba-4.17-fix-netlogon-capability-level2.patch
Patch1: CVE-2023-3347-signing-4.17-01.patch
Requires(pre): /usr/sbin/groupadd Requires(pre): /usr/sbin/groupadd
Requires(pre): %{name}-common = %{samba_depver} Requires(pre): %{name}-common = %{samba_depver}
@ -4300,6 +4303,10 @@ fi
* Wed Jul 26 2023 MSVSphere Packaging Team <packager@msvsphere.ru> - 2:4.17.5-2 * Wed Jul 26 2023 MSVSphere Packaging Team <packager@msvsphere.ru> - 2:4.17.5-2
- Rebuilt for MSVSphere 8.8 - Rebuilt for MSVSphere 8.8
* Tue Jul 18 2023 Andreas Schneider <asn@redhat.com> - 4.17.5-3
- resolves: rhbz#2223515 - Fix CVE-2023-3347 - SMB2 packet signing not enforced
- resolves: rhbz#2223601 - Fix netlogon capabilities level 2
* Wed Feb 15 2023 Pavel Filipenský <pfilipen@redhat.com> - 4.17.5-2 * Wed Feb 15 2023 Pavel Filipenský <pfilipen@redhat.com> - 4.17.5-2
- resolves: rhbz#2169339 - Fix winbind memory leak - resolves: rhbz#2169339 - Fix winbind memory leak
- resolves: rhbz#2152899 - Fix Samba shares not accessible issue - resolves: rhbz#2152899 - Fix Samba shares not accessible issue

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