GLSA 200703-14: Asterisk: SIP Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	Asterisk: SIP Denial of Service
Date:	03/16/2007
Bugs:	#169616
ID:	200703-14

Synopsis

Asterisk is vulnerable to Denial of Service in the SIP channel.

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/asterisk	< 1.2.14-r1	>= 1.2.14-r1	All supported architectures

Description

The MU Security Research Team discovered that Asterisk contains a NULL-pointer dereferencing error in the SIP channel when handling request messages.

Impact

A remote attacker could cause an Asterisk server listening for SIP messages to crash by sending a specially crafted SIP request message.

Workaround

There is no known workaround at this time.

Resolution

All Asterisk users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose net-misc/asterisk

Note: Asterisk 1.0.x is no longer supported upstream so users should consider upgrading to Asterisk 1.2.x.

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200703-14.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.