The IAX2 channel driver (chan_iax2) for Asterisk 1.2.x before 1.2.9 and 1.0.x before 1.0.11 allows remote attackers to cause a denial of service (crash) and execute arbitrary code via truncated IAX 2 (IAX2) video frames, which bypasses a length check and leads to a buffer overflow involving negative length check. NOTE: the vendor advisory claims that only a DoS is possible, but the original researcher is reliable.
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://securitytracker.com/id?1016236 | vdb entry patch |
| http://www.debian.org/security/2006/dsa-1126 | vendor advisory |
| http://secunia.com/advisories/20899 | third party advisory vendor advisory |
| http://secunia.com/advisories/20658 | third party advisory vendor advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/27045 | vdb entry |
| http://secunia.com/advisories/21222 | third party advisory vendor advisory |
| http://www.asterisk.org/node/95 | |
| http://www.gentoo.org/security/en/glsa/glsa-200606-15.xml | vendor advisory |
| http://www.securityfocus.com/bid/18295 | vdb entry patch |
| http://secunia.com/advisories/20497 | third party advisory patch vendor advisory |
| http://www.securityfocus.com/archive/1/436127/100/0/threaded | mailing list |
| http://www.vupen.com/english/advisories/2006/2181 | vdb entry vendor advisory |
| http://www.novell.com/linux/security/advisories/2006_38_security.html | vendor advisory |
| http://www.securityfocus.com/archive/1/436671/100/0/threaded | mailing list |