Asterisk: Denial of Service

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201202-06 / asterisk
Release Date	February 22, 2012
Latest Revision	February 22, 2012: 1
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-misc/asterisk	< 1.8.8.2	>= 1.8.8.2	All supported architectures

Related bugreports: #399507

Synopsis

A vulnerability in Asterisk could allow a remote attacker to cause a Denial of Service condition.

2. Impact Information

Background

Asterisk is an open source telephony engine and toolkit.

Description

A vulnerability has been found in Asterisk's handling of certain encrypted streams where the res_srtp module has been loaded but video support has not been enabled.

Impact

A remote attacker could send a specially crafted SDP message to the Asterisk daemon, possibly resulting in a Denial of Service condition.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Asterisk users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-misc/asterisk-1.8.8.2"

4. References

CVE-2012-0885

Page updated February 22, 2012

Summary: This is a Gentoo Linux Security Advisory

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