chan_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.11.1 and 10.x before 10.3.1 and Asterisk Business Edition C.3.x before C.3.7.4, when the trustrpid option is enabled, allows remote authenticated users to cause a denial of service (daemon crash) by sending a SIP UPDATE message that triggers a connected-line update attempt without an associated channel.
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 |
|---|---|
| https://issues.asterisk.org/jira/browse/ASTERISK-19770 | |
| http://www.securitytracker.com/id?1026963 | vdb entry |
| http://osvdb.org/81456 | vdb entry |
| http://www.securityfocus.com/bid/53205 | vdb entry |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/75101 | vdb entry |
| http://lists.fedoraproject.org/pipermail/package-announce/2012-May/079759.html | vendor advisory |
| http://secunia.com/advisories/48891 | third party advisory |
| http://downloads.asterisk.org/pub/security/AST-2012-006.html | patch vendor advisory |