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Commit Graph

7 Commits (b51eeb3ab5e0337d5f68dfc589a1cde6af599cc0)

Author SHA1 Message Date
Philippe Antoine 11f849c3ee protocol-change: sets event in case of failure 
Protocol change can fail if one protocol change is already
occuring.

Ticket: #5509
 2 years ago
Jeff Lucovsky 130b8d26e7 smtp/mime: Set event when name exceeds limit 5 years ago
Eric Leblond 5dbedbfa5b app-layer-smtp: fix memory leak 
This patch fixes the following leak:

Direct leak of 9982880 byte(s) in 2902 object(s) allocated from:
    #0 0x4c253b in malloc ??:?
    #1 0x10c39ac in MimeDecInitParser /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/util-decode-mime.c:2379
    #2 0x6a0f91 in SMTPProcessRequest /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/app-layer-smtp.c:1085
    #3 0x697658 in SMTPParse /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/app-layer-smtp.c:1185
    #4 0x68fa7a in SMTPParseClientRecord /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/app-layer-smtp.c:1208
    #5 0x6561c5 in AppLayerParserParse /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/app-layer-parser.c:908
    #6 0x53dc2e in AppLayerHandleTCPData /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/app-layer.c:444
    #7 0xf8e0af in DoReassemble /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/stream-tcp-reassemble.c:2635
    #8 0xf8c3f8 in StreamTcpReassembleAppLayer /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/stream-tcp-reassemble.c:3028
    #9 0xf94267 in StreamTcpReassembleHandleSegmentUpdateACK /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/stream-tcp-reassemble.c:3404
    #10 0xf9643d in StreamTcpReassembleHandleSegment /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/stream-tcp-reassemble.c:3432
    #11 0xf578b4 in HandleEstablishedPacketToClient /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/stream-tcp.c:2245
    #12 0xeea3c7 in StreamTcpPacketStateEstablished /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/stream-tcp.c:2489
    #13 0xec1d38 in StreamTcpPacket /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/stream-tcp.c:4568
    #14 0xeb0e16 in StreamTcp /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/stream-tcp.c:5064
    #15 0xff52a4 in TmThreadsSlotVarRun /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/tm-threads.c:130
    #16 0xffdad1 in TmThreadsSlotVar /home/victor/qa/buildbot/donkey/z600fuzz/Private/src/tm-threads.c:474
    #17 0x7f7cd678d181 in start_thread /build/buildd/eglibc-2.19/nptl/pthread_create.c:312 (discriminator 2)

We come to this case when a SMTP session contains at least 2 mails
and then the ending of the first is not correctly detected. In that
case, switching to a new tx seems a good solution. This way we still
have partial logging.
 9 years ago
Eric Leblond 10e2e2a8b6 app-layer-smtp: fix mem leak and add new alert 
If SMTP session is weird then we may reach a state where a field
like MAIL FROM is seen as duplicated.

Valgrind output is:

30 bytes in 1 blocks are definitely lost in loss record 96 of 399
   at 0x4C29C0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
   by 0x4A5803: SMTPParseCommandWithParam (app-layer-smtp.c:996)
   by 0x4A4DCE: SMTPParseCommandMAILFROM (app-layer-smtp.c:1016)
   by 0x4A3F55: SMTPProcessRequest (app-layer-smtp.c:1127)
   by 0x4A1F8C: SMTPParse (app-layer-smtp.c:1191)
   by 0x493AD7: SMTPParseClientRecord (app-layer-smtp.c:1214)
   by 0x4878A6: AppLayerParserParse (app-layer-parser.c:908)
   by 0x42384E: AppLayerHandleTCPData (app-layer.c:444)
   by 0x8D7EAD: DoReassemble (stream-tcp-reassemble.c:2635)
   by 0x8D795F: StreamTcpReassembleAppLayer (stream-tcp-reassemble.c:3028)
   by 0x8D8BE0: StreamTcpReassembleHandleSegmentUpdateACK (stream-tcp-reassemble.c:3404)
   by 0x8D8F6E: StreamTcpReassembleHandleSegment (stream-tcp-reassemble.c:3432)
 9 years ago
Victor Julien 6d170cadd7 smtp: fix mime boundary parsing issue 
If a boundary was longer than 254 bytes a stack overflow would result
in mime decoding.

Ticket #1449

Reported-by: Kostya Kortchinsky of the Google Security Team
 10 years ago
David Abarbanel c2dc686742 SMTP MIME Email Message decoder 10 years ago
Victor Julien 5a1a443701 Add example smtp decoding events rules file. 13 years ago