Hello,

I did some more safety checks. Can you try it again and report if it is ok this time? I backported till version 3.0.x.

If you get some backtrace anytime is a crash, that will help a lot.

Thanks,
Daniel

On 2/4/11 5:48 PM, dotnetdub wrote:


On 25 November 2010 17:38, marius zbihlei <marius.zbihlei@1and1.ro> wrote:
On 11/25/2010 07:32 PM, dotnetdub wrote:


Are you able to test a patch if a provide one to you? I wanted to wait for Daniel's opinion as I have no way of testing it. If you have a dump of the attack traffic or you can generate more with bad CSEQ (as from the message log you provided) you can test the patch against your cfg and see if it still crashes(hope not). In my opinion the crash should be deterministic. You will find the trivial patch attached. If you can test it and it works I will push it to upstream (also to 3.0 branch). Keep in mind that other probles might appear as well during the processing of the SIP messages. If a core does appear please retry the steps in the previous mail with the new core and .so offset.

Apply the patch with the patch utility (copy to the modules/topoh and run patch < patch) . I await some feedback :)

Marius



Hi Marius,

I did apply this patch and recompile. I checked the lib folder and date of topoh changed to compile date.

Another SIP attack and core dump again.

This looks like different memory addresses though.

proxy:/var/log# dmesg 
[1853341.778338] kamailio[20503]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]
[1853341.921334] kamailio[20507]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]
[1853341.991430] kamailio[20498]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]
[1853342.057429] kamailio[20506]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]
[1853342.139751] kamailio[20505]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]
[1853342.149429] kamailio[20499]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]
[1853342.156097] kamailio[20502]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]
[1853342.160097] kamailio[20501]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]
[1853342.163561] kamailio[20500]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]
[1853342.168357] kamailio[20504]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]



Feb  4 16:19:09 proxy1 sip[20503]: ERROR: <core> [parser/parse_cseq.c:97]: ERROR: CSeq EoL expected

Feb  4 16:19:09 proxy1 kernel: [1853341.778338] kamailio[20503]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]

Feb  4 16:19:09 proxy1 sip[20503]: ERROR: <core> [parser/parse_cseq.c:100]: ERROR: parse_cseq: bad cseq

Feb  4 16:19:09 proxy1 sip[20503]: ERROR: <core> [parser/msg_parser.c:158]: ERROR: get_hdr_field: bad cseq

Feb  4 16:19:09 proxy1 sip[20503]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [CSeq: 1 REGISTER ACK]

Feb  4 16:19:09 proxy1 sip[20500]: INFO: <script>: [ROUTE-1] Received registration from sip:3564815798@195.191.29.11 (180.148.1.3)

Feb  4 16:19:09 proxy1 sip[20500]: INFO: <script>: [ROUTE-1 !] Credentials invalid; issuing challenge

Feb  4 16:19:09 proxy1 sip[20507]: ERROR: <core> [parser/parse_cseq.c:97]: ERROR: CSeq EoL expected

Feb  4 16:19:09 proxy1 sip[20507]: ERROR: <core> [parser/parse_cseq.c:100]: ERROR: parse_cseq: bad cseq

Feb  4 16:19:09 proxy1 sip[20507]: ERROR: <core> [parser/msg_parser.c:158]: ERROR: get_hdr_field: bad cseq

Feb  4 16:19:09 proxy1 sip[20507]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [CSeq: 1 REGISTER ACK]

Feb  4 16:19:09 proxy1 kernel: [1853341.921334] kamailio[20507]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]

Feb  4 16:19:09 proxy1 sip[20498]: ERROR: <core> [parser/parse_cseq.c:97]: ERROR: CSeq EoL expected

Feb  4 16:19:09 proxy1 sip[20498]: ERROR: <core> [parser/parse_cseq.c:100]: ERROR: parse_cseq: bad cseq

Feb  4 16:19:09 proxy1 sip[20498]: ERROR: <core> [parser/msg_parser.c:158]: ERROR: get_hdr_field: bad cseq

Feb  4 16:19:09 proxy1 sip[20498]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [CSeq: 1 REGISTER ACK]

Feb  4 16:19:09 proxy1 kernel: [1853341.991430] kamailio[20498]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]

Feb  4 16:19:09 proxy1 sip[20506]: ERROR: <core> [parser/parse_cseq.c:97]: ERROR: CSeq EoL expected

Feb  4 16:19:09 proxy1 sip[20506]: ERROR: <core> [parser/parse_cseq.c:100]: ERROR: parse_cseq: bad cseq

Feb  4 16:19:09 proxy1 sip[20506]: ERROR: <core> [parser/msg_parser.c:158]: ERROR: get_hdr_field: bad cseq

Feb  4 16:19:09 proxy1 sip[20506]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [CSeq: 1 REGISTER ACK]

Feb  4 16:19:09 proxy1 kernel: [1853342.057429] kamailio[20506]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]

Feb  4 16:19:09 proxy1 sip[20505]: ERROR: <core> [parser/parse_cseq.c:97]: ERROR: CSeq EoL expected

Feb  4 16:19:09 proxy1 sip[20505]: ERROR: <core> [parser/parse_cseq.c:100]: ERROR: parse_cseq: bad cseq

Feb  4 16:19:09 proxy1 sip[20505]: ERROR: <core> [parser/msg_parser.c:158]: ERROR: get_hdr_field: bad cseq

Feb  4 16:19:09 proxy1 sip[20505]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [CSeq: 1 REGISTER ACK]

Feb  4 16:19:09 proxy1 kernel: [1853342.139751] kamailio[20505]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]

Feb  4 16:19:09 proxy1 sip[20499]: ERROR: <core> [parser/parse_cseq.c:97]: ERROR: CSeq EoL expected

Feb  4 16:19:09 proxy1 sip[20499]: ERROR: <core> [parser/parse_cseq.c:100]: ERROR: parse_cseq: bad cseq

Feb  4 16:19:09 proxy1 sip[20499]: ERROR: <core> [parser/msg_parser.c:158]: ERROR: get_hdr_field: bad cseq

Feb  4 16:19:09 proxy1 sip[20499]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [CSeq: 1 REGISTER ACK]

Feb  4 16:19:09 proxy1 kernel: [1853342.149429] kamailio[20499]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]

Feb  4 16:19:09 proxy1 sip[20502]: ERROR: <core> [parser/parse_cseq.c:97]: ERROR: CSeq EoL expected

Feb  4 16:19:09 proxy1 sip[20502]: ERROR: <core> [parser/parse_cseq.c:100]: ERROR: parse_cseq: bad cseq

Feb  4 16:19:09 proxy1 sip[20502]: ERROR: <core> [parser/msg_parser.c:158]: ERROR: get_hdr_field: bad cseq

Feb  4 16:19:09 proxy1 sip[20502]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [CSeq: 1 REGISTER ACK]

Feb  4 16:19:09 proxy1 kernel: [1853342.156097] kamailio[20502]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]

Feb  4 16:19:09 proxy1 sip[20501]: ERROR: <core> [parser/parse_cseq.c:97]: ERROR: CSeq EoL expected

Feb  4 16:19:09 proxy1 sip[20501]: ERROR: <core> [parser/parse_cseq.c:100]: ERROR: parse_cseq: bad cseq

Feb  4 16:19:09 proxy1 sip[20501]: ERROR: <core> [parser/msg_parser.c:158]: ERROR: get_hdr_field: bad cseq

Feb  4 16:19:09 proxy1 sip[20501]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [CSeq: 1 REGISTER ACK]

Feb  4 16:19:09 proxy1 kernel: [1853342.160097] kamailio[20501]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]

Feb  4 16:19:09 proxy1 sip[20500]: ERROR: <core> [parser/parse_cseq.c:97]: ERROR: CSeq EoL expected

Feb  4 16:19:09 proxy1 sip[20500]: ERROR: <core> [parser/parse_cseq.c:100]: ERROR: parse_cseq: bad cseq

Feb  4 16:19:09 proxy1 sip[20500]: ERROR: <core> [parser/msg_parser.c:158]: ERROR: get_hdr_field: bad cseq

Feb  4 16:19:09 proxy1 sip[20500]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [CSeq: 1 REGISTER ACK]

Feb  4 16:19:09 proxy1 kernel: [1853342.163561] kamailio[20500]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]

Feb  4 16:19:09 proxy1 sip[20504]: ERROR: <core> [parser/parse_cseq.c:97]: ERROR: CSeq EoL expected

Feb  4 16:19:09 proxy1 sip[20504]: ERROR: <core> [parser/parse_cseq.c:100]: ERROR: parse_cseq: bad cseq

Feb  4 16:19:09 proxy1 sip[20504]: ERROR: <core> [parser/msg_parser.c:158]: ERROR: get_hdr_field: bad cseq

Feb  4 16:19:09 proxy1 sip[20504]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [CSeq: 1 REGISTER ACK]

Feb  4 16:19:09 proxy1 kernel: [1853342.168357] kamailio[20504]: segfault at 18 ip b7064220 sp bf9c3370 error 4 in topoh.so[b7061000+d000]

Feb  4 16:19:13 proxy1 sip[20497]: ALERT: <core> [main.c:741]: child process 20507 exited by a signal 11



Regards,
Brian


 

Regards
Brian 




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