[ GLSA 201206-05 ] Asterisk: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: Asterisk: Multiple vulnerabilities (GLSA 201206-05)
Severity: normal
Exploitable: remote
Date: June 21, 2012
Bug(s): #413353, #418189, #418191
ID: 201206-05

Synopsis

Multiple vulnerabilities in Asterisk might allow remote attackers
to execute arbitrary code.


Background

Asterisk is an open source telephony engine and toolkit.

Affected Packages

Package: net-misc/asterisk
Vulnerable: < 1.8.12.1
Unaffected: >= 1.8.12.1
Architectures: All supported architectures


Description

Multiple vulnerabilities have been found in Asterisk:

• An error in manager.c allows shell access through the MixMonitor
  application, GetVar, or Status (CVE-2012-2414).
  
• An error in chan_skinny.c could cause a heap-based buffer overflow
  (CVE-2012-2415).
  
• An error in chan_sip.c prevents Asterisk from checking if a channel
  exists before connected line updates (CVE-2012-2416).
  
• An error in chan_iax2.c may cause an invalid pointer to be called
  (CVE-2012-2947).
  
• chan_skinny.c contains a NULL pointer dereference (CVE-2012-2948).

Impact

A remote attacker could execute arbitrary code with the privileges of
the process or cause a Denial of Service condition.


Workaround

There is no known workaround at this time.

Resolution

All Asterisk users should upgrade to the latest version: