The SIP channel driver (channels/chan_sip.c) in Asterisk Open Source 1.8.17.x through 1.8.22.x, 1.8.23.x before 1.8.23.1, and 11.x before 11.5.1 and Certified Asterisk 1.8.15 before 1.8.15-cert3 and 11.2 before 11.2-cert2 allows remote attackers to cause a denial of service (NULL pointer dereference, segmentation fault, and daemon crash) via an ACK with SDP to a previously terminated channel. NOTE: some of these details are obtained from third party information.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://secunia.com/advisories/54534 | third party advisory vendor advisory |
| http://osvdb.org/96691 | vdb entry |
| http://seclists.org/bugtraq/2013/Aug/185 | mailing list patch |
| http://secunia.com/advisories/54617 | third party advisory |
| http://www.debian.org/security/2013/dsa-2749 | vendor advisory |
| http://archives.neohapsis.com/archives/bugtraq/2013-08/0175.html | mailing list |
| http://downloads.asterisk.org/pub/security/AST-2013-004.html | patch |
| http://www.securityfocus.com/bid/62021 | vdb entry |
| http://www.securitytracker.com/id/1028956 | vdb entry |
| https://issues.asterisk.org/jira/browse/ASTERISK-21064 | vendor advisory |
| http://www.mandriva.com/security/advisories?name=MDVSA-2013:223 | vendor advisory |