[Bro-Dev] [JIRA] (BIT-1458) Lots of binpac exceptions in SIP

[Gary Faulkner (JIRA)]

    [ https://bro-tracker.atlassian.net/browse/BIT-1458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=21701#comment-21701 ] 

Gary Faulkner commented on BIT-1458:
------------------------------------

Also seeing the problem (originally reported by a user on the SO mailing list):

Here is an example dpd.log entry with the corresponding sip.log entry. For some reason I have 2 binpac errors for the same UID:

dpd.log (2):
1439948399.686688  Caw7aCOdBBH3URbN2       85.93.88.110    5072    10.10.142.119 5060    udp     SIP     Binpac exception: binpac exception: string mismatch at /nsm/bro/git/bro2.4-10/bro/src/analyzer/protocol/sip/sip-protocol.pac:70: \x0aexpected pattern: ":"\x0aactual data: " 110906697 562075942 IN IP4 85.93.88.110\x0d\x0as=sipcli\x0d\x0ac=IN IP4 85.93.88.110\x0d\x0at=0 0\x0d\x0am=audio 5074 RTP/AVP 18 0 8 101\x0d\x0aa=fmtp:101 0-15\x0d\x0aa=rtpmap:18 G729/8000\x0d\x0aa=rtpmap:0 PCMU/8000\x0d\x0aa=rtpmap:8 PCMA/8000\x0d\x0aa=rtpmap:101 telephone-event/8000\x0d\x0aa=ptime:20\x0d\x0aa=sendrecv\x0d\x0a"

1439948399.698850       Caw7aCOdBBH3URbN2       85.93.88.110    5072    10.10.142.119 5060    udp     SIP     Binpac exception: binpac exception: string mismatch at /nsm/bro/git/bro2.4-10/bro/src/analyzer/protocol/sip/sip-protocol.pac:70: \x0aexpected pattern: ":"\x0aactual data: " 110906697 562075942 IN IP4 85.93.88.110\x0d\x0as=sipcli\x0d\x0ac=IN IP4 85.93.88.110\x0d\x0at=0 0\x0d\x0am=audio 5074 RTP/AVP 18 0 8 101\x0d\x0aa=fmtp:101 0-15\x0d\x0aa=rtpmap:18 G729/8000\x0d\x0aa=rtpmap:0 PCMU/8000\x0d\x0aa=rtpmap:8 PCMA/8000\x0d\x0aa=rtpmap:101 telephone-event/8000\x0d\x0aa=ptime:20\x0d\x0aa=sendrecv\x0d\x0a"

sip.log:
1439948399.686688       Caw7aCOdBBH3URbN2       85.93.88.110    5072    10.10.142.119 5060    0       INVITE  sip:9011441224928088 at 10.10.142.119    -       1003<sip:1003 at 10.10.142.119>  9011441224928088<sip:9011441224928088 at 10.10.142.119>    1003<sip:1003 at 10.10.142.119>  9011441224928088<sip:9011441224928088 at 10.10.142.119>;tag=d4ff6c9dcee8f11ai0   -       b2a424f8e92e14efb90fd1a9630095d3        1 INVITE SIP/2.0/UDP 85.93.88.110:5072,SIP/2.0/UDP 85.93.88.110:5072      SIP/2.0/UDP 85.93.88.110:5072   sipcli/v1.8     404     Not Found       -       279     0       -

> Lots of binpac exceptions in SIP
> --------------------------------
>
>                 Key: BIT-1458
>                 URL: https://bro-tracker.atlassian.net/browse/BIT-1458
>             Project: Bro Issue Tracker
>          Issue Type: Problem
>          Components: BinPAC
>    Affects Versions: 2.4
>         Environment: Linux 3.19, Ubuntu 14.04 LTS, Asterisk for VOIP, plain SIP plus RDP no encryption
>            Reporter: Michal Purzynski
>
> There's quite a bit of binpac exception in dpd.log on office sensors, that can see SIP traffic. The log message is always the same (I think).
> 1439957552.911869	ChGboH2ZriUae63ufg	23.92.80.45	5089	10.252.40.4	5060	udp	SIP	Binpac exception: binpac exception: string mismatch at /home/mpurzynski/src/bro/bro-2.4-pfring/src/analyzer/protocol/sip/sip-protocol.pac:70: \x0aexpected pattern: ":"\x0aactual data: " 496704993 2096249773 IN IP4 23.92.80.45\x0d\x0as=sipcli\x0d\x0ac=IN IP4 23.92.80.45\x0d\x0at=0 0\x0d\x0am=audio 5097 RTP/AVP 18 0 8 101\x0d\x0aa=fmtp:101 0-15\x0d\x0aa=rtpmap:18 G729/8000\x0d\x0aa=rtpmap:0 PCMU/8000\x0d\x0aa=rtpmap:8 PCMA/8000\x0d\x0aa=rtpmap:101 telephone-event/8000\x0d\x0aa=ptime:20\x0d\x0aa=sendrecv\x0d\x0a"
> What kind of data do you want me to attach, to help debugging the issue?



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