Compare commits
No commits in common. 'i10c-beta' and 'c9' have entirely different histories.
@ -1,3 +1,3 @@
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|||||||
SOURCES/tcpdump-4.99.4.tar.gz
|
SOURCES/tcpdump-4.99.0.tar.gz
|
||||||
SOURCES/tcpdump-4.99.4.tar.gz.sig
|
SOURCES/tcpdump-4.99.0.tar.gz.sig
|
||||||
SOURCES/tcpslice-1.7.tar.gz
|
SOURCES/tcpslice-1.3.tar.gz
|
||||||
|
|||||||
@ -1,3 +1,3 @@
|
|||||||
cc005539296900ce6a90c61f4099bd0f3ef3dd26 SOURCES/tcpdump-4.99.4.tar.gz
|
4348a93b47a5b35a9c04abcee4d84a04b1a681f8 SOURCES/tcpdump-4.99.0.tar.gz
|
||||||
cddad6f90391208fadc513aac9a90b622411ef00 SOURCES/tcpdump-4.99.4.tar.gz.sig
|
3fadebc3d3edaa3f4326a11864a0034ba1f2ccb7 SOURCES/tcpdump-4.99.0.tar.gz.sig
|
||||||
8fb66de200a35b1b228e9cc3b13e59c648e48fee SOURCES/tcpslice-1.7.tar.gz
|
4445c159ce45fa6fd9767658918eaf59175afac3 SOURCES/tcpslice-1.3.tar.gz
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||||||
|
|||||||
@ -0,0 +1,48 @@
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|||||||
|
From 030859fce9c77417de657b9bb29c0f78c2d68f4a Mon Sep 17 00:00:00 2001
|
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|
From: Denis Ovsienko <denis@ovsienko.info>
|
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|
Date: Thu, 30 Dec 2021 17:52:52 +0000
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|
Subject: [PATCH] CVE-2021-41043: Fix a use-after-free in extract_slice().
|
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|
|
||||||
|
This issue was discovered by Mohammad Hosein Askari (@C0NSTANTINE110),
|
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|
see GitHub issue #11.
|
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|
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|
In extract_slice() pcap_dump_open() takes a pcap_t argument to tell
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|
which DLT to use for the output file. This used to be the pcap_t of the
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|
first input file, as main() requires at least one input file. However,
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|
the loop before pcap_dump_open() closes all, including the first, input
|
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|
files that don't meet a test condition. This way, when the first file
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|
didn't meet the condition, the call to pcap_dump_open() would end up as
|
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|
a use-after-free. Make the pcap_dump_open() call before the loop, when
|
||||||
|
the first array element is always valid, and fix this problem.
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|
---
|
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|
diff --git a/tcpslice-1.3/tcpslice.c b/tcpslice-1.3/tcpslice.c
|
||||||
|
index e7b9ba8..507dd1b 100644
|
||||||
|
--- a/tcpslice-1.3/tcpslice.c
|
||||||
|
+++ b/tcpslice-1.3/tcpslice.c
|
||||||
|
@@ -838,6 +838,13 @@ extract_slice(struct state *states, int numfiles, const char *write_file_name,
|
||||||
|
TV_SUB(start_time, base_time, &relative_start);
|
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|
TV_SUB(stop_time, base_time, &relative_stop);
|
||||||
|
|
||||||
|
+ /* Always write the output file, use the first input file's DLT. */
|
||||||
|
+ global_dumper = pcap_dump_open(states[0].p, write_file_name);
|
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|
+ if (!global_dumper) {
|
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|
+ error("error creating output file '%s': %s",
|
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|
+ write_file_name, pcap_geterr(states[0].p));
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|
+ }
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|
+
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|
for (i = 0; i < numfiles; ++i) {
|
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|
s = &states[i];
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|
|
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|
@@ -876,12 +883,6 @@ extract_slice(struct state *states, int numfiles, const char *write_file_name,
|
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|
get_next_packet(s);
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|
}
|
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|
|
||||||
|
- global_dumper = pcap_dump_open(states->p, write_file_name);
|
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|
- if (!global_dumper) {
|
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|
- error( "error creating output file %s: %s",
|
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|
- write_file_name, pcap_geterr( states->p ) );
|
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|
- }
|
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|
-
|
||||||
|
|
||||||
|
/*
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|
* Now, loop thru all the packets in all the files,
|
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@ -1,154 +0,0 @@
|
|||||||
From 9ce43fa1e06b1ac2ddf1630a0e90337136ea27c5 Mon Sep 17 00:00:00 2001
|
|
||||||
From: Guy Harris <gharris@sonic.net>
|
|
||||||
Date: Mon, 21 Aug 2023 23:15:14 -0700
|
|
||||||
Subject: [PATCH] pgm: fix the way we step through the packet.
|
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|
|
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Step past the PGM header after we finish processing it and before we
|
|
||||||
process the message-type-specific header.
|
|
||||||
|
|
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Step past the message-type-specific fixed-length header before we
|
|
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process the stuff after that header.
|
|
||||||
|
|
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This makes the code a bit clearer (by explicitly advancing bp by the
|
|
||||||
size of the stuff we just processed, rather than doing so by trickery
|
|
||||||
involving adding 1 to a pointer to a structure), and fixes the
|
|
||||||
processing of message types that don't have a message-type-specific
|
|
||||||
header (where we weren't stepping past the PGM header). It also affects
|
|
||||||
the way we handle messages of an unknown type.
|
|
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|
|
||||||
(cherry picked from commit 9a3eebde95cf1032ac68ae4312e2db14bb1fe58d)
|
|
||||||
---
|
|
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print-pgm.c | 29 +++++++++++++++--------------
|
|
||||||
tests/pgm_opts_asan.out | 2 +-
|
|
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tests/pgm_opts_asan_2.out | 2 +-
|
|
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tests/pgm_opts_asan_3.out | 2 +-
|
|
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4 files changed, 18 insertions(+), 17 deletions(-)
|
|
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|
|
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diff --git a/print-pgm.c b/print-pgm.c
|
|
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index ccb0b46a..8a7e215b 100644
|
|
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--- a/print-pgm.c
|
|
||||||
+++ b/print-pgm.c
|
|
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@@ -220,13 +220,14 @@ pgm_print(netdissect_options *ndo,
|
|
||||||
pgm->pgm_gsid[3],
|
|
||||||
pgm->pgm_gsid[4],
|
|
||||||
pgm->pgm_gsid[5]);
|
|
||||||
+ bp += sizeof(struct pgm_header);
|
|
||||||
switch (pgm_type_val) {
|
|
||||||
case PGM_SPM: {
|
|
||||||
const struct pgm_spm *spm;
|
|
||||||
|
|
||||||
- spm = (const struct pgm_spm *)(pgm + 1);
|
|
||||||
+ spm = (const struct pgm_spm *)bp;
|
|
||||||
ND_TCHECK_SIZE(spm);
|
|
||||||
- bp = (const u_char *) (spm + 1);
|
|
||||||
+ bp += sizeof(struct pgm_spm);
|
|
||||||
|
|
||||||
switch (GET_BE_U_2(spm->pgms_nla_afi)) {
|
|
||||||
case AFNUM_INET:
|
|
||||||
@@ -256,9 +257,9 @@ pgm_print(netdissect_options *ndo,
|
|
||||||
const struct pgm_poll *pgm_poll;
|
|
||||||
uint32_t ivl, rnd, mask;
|
|
||||||
|
|
||||||
- pgm_poll = (const struct pgm_poll *)(pgm + 1);
|
|
||||||
+ pgm_poll = (const struct pgm_poll *)bp;
|
|
||||||
ND_TCHECK_SIZE(pgm_poll);
|
|
||||||
- bp = (const u_char *) (pgm_poll + 1);
|
|
||||||
+ bp += sizeof(struct pgm_poll);
|
|
||||||
|
|
||||||
switch (GET_BE_U_2(pgm_poll->pgmp_nla_afi)) {
|
|
||||||
case AFNUM_INET:
|
|
||||||
@@ -294,35 +295,35 @@ pgm_print(netdissect_options *ndo,
|
|
||||||
case PGM_POLR: {
|
|
||||||
const struct pgm_polr *polr_msg;
|
|
||||||
|
|
||||||
- polr_msg = (const struct pgm_polr *)(pgm + 1);
|
|
||||||
+ polr_msg = (const struct pgm_polr *)bp;
|
|
||||||
ND_TCHECK_SIZE(polr_msg);
|
|
||||||
ND_PRINT("POLR seq %u round %u",
|
|
||||||
GET_BE_U_4(polr_msg->pgmp_seq),
|
|
||||||
GET_BE_U_2(polr_msg->pgmp_round));
|
|
||||||
- bp = (const u_char *) (polr_msg + 1);
|
|
||||||
+ bp += sizeof(struct pgm_polr);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
case PGM_ODATA: {
|
|
||||||
const struct pgm_data *odata;
|
|
||||||
|
|
||||||
- odata = (const struct pgm_data *)(pgm + 1);
|
|
||||||
+ odata = (const struct pgm_data *)bp;
|
|
||||||
ND_TCHECK_SIZE(odata);
|
|
||||||
ND_PRINT("ODATA trail %u seq %u",
|
|
||||||
GET_BE_U_4(odata->pgmd_trailseq),
|
|
||||||
GET_BE_U_4(odata->pgmd_seq));
|
|
||||||
- bp = (const u_char *) (odata + 1);
|
|
||||||
+ bp += sizeof(struct pgm_data);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
case PGM_RDATA: {
|
|
||||||
const struct pgm_data *rdata;
|
|
||||||
|
|
||||||
- rdata = (const struct pgm_data *)(pgm + 1);
|
|
||||||
+ rdata = (const struct pgm_data *)bp;
|
|
||||||
ND_TCHECK_SIZE(rdata);
|
|
||||||
ND_PRINT("RDATA trail %u seq %u",
|
|
||||||
GET_BE_U_4(rdata->pgmd_trailseq),
|
|
||||||
GET_BE_U_4(rdata->pgmd_seq));
|
|
||||||
- bp = (const u_char *) (rdata + 1);
|
|
||||||
+ bp += sizeof(struct pgm_data);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
@@ -332,9 +333,9 @@ pgm_print(netdissect_options *ndo,
|
|
||||||
const struct pgm_nak *nak;
|
|
||||||
char source_buf[INET6_ADDRSTRLEN], group_buf[INET6_ADDRSTRLEN];
|
|
||||||
|
|
||||||
- nak = (const struct pgm_nak *)(pgm + 1);
|
|
||||||
+ nak = (const struct pgm_nak *)bp;
|
|
||||||
ND_TCHECK_SIZE(nak);
|
|
||||||
- bp = (const u_char *) (nak + 1);
|
|
||||||
+ bp += sizeof(struct pgm_nak);
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Skip past the source, saving info along the way
|
|
||||||
@@ -401,11 +402,11 @@ pgm_print(netdissect_options *ndo,
|
|
||||||
case PGM_ACK: {
|
|
||||||
const struct pgm_ack *ack;
|
|
||||||
|
|
||||||
- ack = (const struct pgm_ack *)(pgm + 1);
|
|
||||||
+ ack = (const struct pgm_ack *)bp;
|
|
||||||
ND_TCHECK_SIZE(ack);
|
|
||||||
ND_PRINT("ACK seq %u",
|
|
||||||
GET_BE_U_4(ack->pgma_rx_max_seq));
|
|
||||||
- bp = (const u_char *) (ack + 1);
|
|
||||||
+ bp += sizeof(struct pgm_ack);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
diff --git a/tests/pgm_opts_asan.out b/tests/pgm_opts_asan.out
|
|
||||||
index 6cc9b065..7527bda3 100644
|
|
||||||
--- a/tests/pgm_opts_asan.out
|
|
||||||
+++ b/tests/pgm_opts_asan.out
|
|
||||||
@@ -1,2 +1,2 @@
|
|
||||||
1 00:04:16.587271427 IP (tos 0x41,ECT(1), id 0, offset 0, flags [none], proto PGM (113), length 32639, options (unknown 89 [bad length 232]), bad cksum 5959 (->9eb9)!)
|
|
||||||
- 128.121.89.107 > 89.89.16.63: 128.121.89.107.4 > 89.89.16.63.225: PGM, length 0 0x3414eb1f0022 UNKNOWN type 0x1f OPTS LEN 225 OPT_1F [13] OPT_06 [26] PATH_NLA [4] [|pgm]
|
|
||||||
+ 128.121.89.107 > 89.89.16.63: 128.121.89.107.4 > 89.89.16.63.225: PGM, length 0 0x3414eb1f0022 UNKNOWN type 0x1f[Bad OPT_LENGTH option, length 0 != 4]
|
|
||||||
diff --git a/tests/pgm_opts_asan_2.out b/tests/pgm_opts_asan_2.out
|
|
||||||
index 1785a571..53830c85 100644
|
|
||||||
--- a/tests/pgm_opts_asan_2.out
|
|
||||||
+++ b/tests/pgm_opts_asan_2.out
|
|
||||||
@@ -1,2 +1,2 @@
|
|
||||||
1 00:04:16.587271427 IP (tos 0x41,ECT(1), id 0, offset 0, flags [none], proto PGM (113), length 32639, options (unknown 89 [bad length 232]), bad cksum 5959 (->96b9)!)
|
|
||||||
- 128.121.89.107 > 89.89.16.63: 128.121.89.107.4 > 89.89.16.63.225: PGM, length 0 0x3414eb1f0022 UNKNOWN type 0x1f OPTS LEN 225 OPT_1F [13] OPT_06 [26] [Bad OPT_PGMCC_DATA option, length 4 < 12]
|
|
||||||
+ 128.121.89.107 > 89.89.16.63: 128.121.89.107.4 > 89.89.16.63.225: PGM, length 0 0x3414eb1f0022 UNKNOWN type 0x1f[Bad OPT_LENGTH option, length 0 != 4]
|
|
||||||
diff --git a/tests/pgm_opts_asan_3.out b/tests/pgm_opts_asan_3.out
|
|
||||||
index 2e35f2fa..b8864e29 100644
|
|
||||||
--- a/tests/pgm_opts_asan_3.out
|
|
||||||
+++ b/tests/pgm_opts_asan_3.out
|
|
||||||
@@ -1,2 +1,2 @@
|
|
||||||
1 00:04:16.587271427 IP (tos 0x41,ECT(1), id 0, offset 0, flags [none], proto PGM (113), length 32639, options (unknown 89 [bad length 232]), bad cksum 5959 (->f814)!)
|
|
||||||
- 128.121.89.16 > 0.89.16.63: 128.121.89.16.4 > 0.89.16.63.225: PGM, length 0 0x3414eb1f0022 UNKNOWN type 0x1f OPTS LEN 225 OPT_1F [13] OPT_06 [26] [Bad OPT_REDIRECT option, length 4 < 8]
|
|
||||||
+ 128.121.89.16 > 0.89.16.63: 128.121.89.16.4 > 0.89.16.63.225: PGM, length 0 0x3414eb1f0022 UNKNOWN type 0x1f[Bad OPT_LENGTH option, length 0 != 4]
|
|
||||||
--
|
|
||||||
2.41.0
|
|
||||||
|
|
||||||
@ -1,48 +0,0 @@
|
|||||||
From 627a1b7fdceaad8745c438bb0037e59689a1f0df Mon Sep 17 00:00:00 2001
|
|
||||||
From: Guy Harris <gharris@sonic.net>
|
|
||||||
Date: Tue, 22 Aug 2023 12:23:20 -0700
|
|
||||||
Subject: [PATCH] pgm: don't advance bp by the option haeder length twice.
|
|
||||||
|
|
||||||
At those points, we've already advanced it by the option header length,
|
|
||||||
and opt_len includes that length, so advance bp by opt_len minus the
|
|
||||||
option header length.
|
|
||||||
|
|
||||||
(cherry picked from commit 09b0447fad52298440e05e7368f9d24492d0b0fe)
|
|
||||||
---
|
|
||||||
print-pgm.c | 6 +++---
|
|
||||||
1 file changed, 3 insertions(+), 3 deletions(-)
|
|
||||||
|
|
||||||
diff --git a/print-pgm.c b/print-pgm.c
|
|
||||||
index 8a7e215b..1e67db77 100644
|
|
||||||
--- a/print-pgm.c
|
|
||||||
+++ b/print-pgm.c
|
|
||||||
@@ -661,7 +661,7 @@ pgm_print(netdissect_options *ndo,
|
|
||||||
|
|
||||||
case PGM_OPT_PATH_NLA:
|
|
||||||
ND_PRINT(" PATH_NLA [%u]", opt_len);
|
|
||||||
- bp += opt_len;
|
|
||||||
+ bp += opt_len - 2;
|
|
||||||
opts_len -= opt_len;
|
|
||||||
break;
|
|
||||||
|
|
||||||
@@ -703,7 +703,7 @@ pgm_print(netdissect_options *ndo,
|
|
||||||
|
|
||||||
case PGM_OPT_CR:
|
|
||||||
ND_PRINT(" CR");
|
|
||||||
- bp += opt_len;
|
|
||||||
+ bp += opt_len - 2;
|
|
||||||
opts_len -= opt_len;
|
|
||||||
break;
|
|
||||||
|
|
||||||
@@ -807,7 +807,7 @@ pgm_print(netdissect_options *ndo,
|
|
||||||
|
|
||||||
default:
|
|
||||||
ND_PRINT(" OPT_%02X [%u] ", opt_type, opt_len);
|
|
||||||
- bp += opt_len;
|
|
||||||
+ bp += opt_len - 2;
|
|
||||||
opts_len -= opt_len;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
--
|
|
||||||
2.41.0
|
|
||||||
|
|
||||||
@ -1,122 +0,0 @@
|
|||||||
From b9811ef5bb1b7d45a90e042f81f3aaf233c8bcb2 Mon Sep 17 00:00:00 2001
|
|
||||||
From: Guy Harris <gharris@sonic.net>
|
|
||||||
Date: Tue, 12 Mar 2024 00:37:23 -0700
|
|
||||||
Subject: [PATCH] ppp: use the buffer stack for the de-escaping buffer.
|
|
||||||
|
|
||||||
This both saves the buffer for freeing later and saves the packet
|
|
||||||
pointer and snapend to be restored when packet processing is complete,
|
|
||||||
even if an exception is thrown with longjmp.
|
|
||||||
|
|
||||||
This means that the hex/ASCII printing in pretty_print_packet()
|
|
||||||
processes the packet data as captured or read from the savefile, rather
|
|
||||||
than as modified by the PPP printer, so that the bounds checking is
|
|
||||||
correct.
|
|
||||||
|
|
||||||
That fixes CVE-2024-2397, which was caused by an exception being thrown
|
|
||||||
by the hex/ASCII printer (which should only happen if those routines are
|
|
||||||
called by a packet printer, not if they're called for the -X/-x/-A
|
|
||||||
flag), which jumps back to the setjmp() that surrounds the packet
|
|
||||||
printer. Hilarity^Winfinite looping ensues.
|
|
||||||
|
|
||||||
Also, restore ndo->ndo_packetp before calling the hex/ASCII printing
|
|
||||||
routine, in case nd_pop_all_packet_info() didn't restore it.
|
|
||||||
---
|
|
||||||
print-ppp.c | 31 +++++++++++++++++--------------
|
|
||||||
print.c | 8 ++++++--
|
|
||||||
2 files changed, 23 insertions(+), 16 deletions(-)
|
|
||||||
|
|
||||||
diff --git a/print-ppp.c b/print-ppp.c
|
|
||||||
index 2cf06c363..9aed23eb9 100644
|
|
||||||
--- a/print-ppp.c
|
|
||||||
+++ b/print-ppp.c
|
|
||||||
@@ -37,6 +37,8 @@
|
|
||||||
|
|
||||||
#include "netdissect-stdinc.h"
|
|
||||||
|
|
||||||
+#include <stdlib.h>
|
|
||||||
+
|
|
||||||
#ifdef __bsdi__
|
|
||||||
#include <net/slcompress.h>
|
|
||||||
#include <net/if_ppp.h>
|
|
||||||
@@ -1358,7 +1360,6 @@ ppp_hdlc(netdissect_options *ndo,
|
|
||||||
u_char *b, *t, c;
|
|
||||||
const u_char *s;
|
|
||||||
u_int i, proto;
|
|
||||||
- const void *sb, *se;
|
|
||||||
|
|
||||||
if (caplen == 0)
|
|
||||||
return;
|
|
||||||
@@ -1366,9 +1367,11 @@ ppp_hdlc(netdissect_options *ndo,
|
|
||||||
if (length == 0)
|
|
||||||
return;
|
|
||||||
|
|
||||||
- b = (u_char *)nd_malloc(ndo, caplen);
|
|
||||||
- if (b == NULL)
|
|
||||||
- return;
|
|
||||||
+ b = (u_char *)malloc(caplen);
|
|
||||||
+ if (b == NULL) {
|
|
||||||
+ (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
|
|
||||||
+ "%s: malloc", __func__);
|
|
||||||
+ }
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Unescape all the data into a temporary, private, buffer.
|
|
||||||
@@ -1389,13 +1392,15 @@ ppp_hdlc(netdissect_options *ndo,
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
- * Change the end pointer, so bounds checks work.
|
|
||||||
- * Change the pointer to packet data to help debugging.
|
|
||||||
+ * Switch to the output buffer for dissection, and save it
|
|
||||||
+ * on the buffer stack so it can be freed; our caller must
|
|
||||||
+ * pop it when done.
|
|
||||||
*/
|
|
||||||
- sb = ndo->ndo_packetp;
|
|
||||||
- se = ndo->ndo_snapend;
|
|
||||||
- ndo->ndo_packetp = b;
|
|
||||||
- ndo->ndo_snapend = t;
|
|
||||||
+ if (!nd_push_buffer(ndo, b, b, (u_int)(t - b))) {
|
|
||||||
+ free(b);
|
|
||||||
+ (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
|
|
||||||
+ "%s: can't push buffer on buffer stack", __func__);
|
|
||||||
+ }
|
|
||||||
length = ND_BYTES_AVAILABLE_AFTER(b);
|
|
||||||
|
|
||||||
/* now lets guess about the payload codepoint format */
|
|
||||||
@@ -1437,13 +1442,11 @@ ppp_hdlc(netdissect_options *ndo,
|
|
||||||
}
|
|
||||||
|
|
||||||
cleanup:
|
|
||||||
- ndo->ndo_packetp = sb;
|
|
||||||
- ndo->ndo_snapend = se;
|
|
||||||
+ nd_pop_packet_info(ndo);
|
|
||||||
return;
|
|
||||||
|
|
||||||
trunc:
|
|
||||||
- ndo->ndo_packetp = sb;
|
|
||||||
- ndo->ndo_snapend = se;
|
|
||||||
+ nd_pop_packet_info(ndo);
|
|
||||||
nd_print_trunc(ndo);
|
|
||||||
}
|
|
||||||
|
|
||||||
diff --git a/print.c b/print.c
|
|
||||||
index b9ba5997d..f20633388 100644
|
|
||||||
--- a/print.c
|
|
||||||
+++ b/print.c
|
|
||||||
@@ -431,10 +431,14 @@ pretty_print_packet(netdissect_options *ndo, const struct pcap_pkthdr *h,
|
|
||||||
nd_pop_all_packet_info(ndo);
|
|
||||||
|
|
||||||
/*
|
|
||||||
- * Restore the original snapend, as a printer might have
|
|
||||||
- * changed it.
|
|
||||||
+ * Restore the originals snapend and packetp, as a printer
|
|
||||||
+ * might have changed them.
|
|
||||||
+ *
|
|
||||||
+ * XXX - nd_pop_all_packet_info() should have restored the
|
|
||||||
+ * original values, but, just in case....
|
|
||||||
*/
|
|
||||||
ndo->ndo_snapend = sp + h->caplen;
|
|
||||||
+ ndo->ndo_packetp = sp;
|
|
||||||
if (ndo->ndo_Xflag) {
|
|
||||||
/*
|
|
||||||
* Print the raw packet data in hex and ASCII.
|
|
||||||
@ -1,2 +0,0 @@
|
|||||||
#Type Name ID GECOS Home directory Shell
|
|
||||||
u tcpdump 72 "tcpdump" - -
|
|
||||||
Loading…
Reference in new issue