Asterisk: IAX2 video frame buffer overflow — GLSA 200606-15

Asterisk contains a bug in the IAX2 channel driver making it vulnerable to the remote execution of arbitrary code.

Affected packages

Background

Asterisk is an open source implementation of a telephone private branch exchange (PBX).

Description

Asterisk fails to properly check the length of truncated video frames in the IAX2 channel driver which results in a buffer overflow.

Impact

An attacker could exploit this vulnerability by sending a specially crafted IAX2 video stream resulting in the execution of arbitrary code with the permissions of the user running Asterisk.

Workaround

Disable public IAX2 support.

Resolution

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-misc/asterisk-1.0.11_p1"

References

• CVE-2006-2898
• Corelabs Asterisk PBX truncated video frame vulnerability advisory

Release date
June 14, 2006

Latest revision
June 14, 2006: 01

Severity
high

Exploitable
remote

Bugzilla entries

• 135680