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

http://security.gentoo.org/

Severity:	high
Title:	Asterisk: IAX2 video frame buffer overflow
Date:	06/14/2006
Bugs:	#135680
ID:	200606-15

Synopsis

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

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/asterisk	< 1.0.11_p1	>= 1.0.11_p1	All supported architectures

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

All Asterisk users should upgrade to the latest version:

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

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200606-15.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.