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Asterisk: Multiple vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201206-05 / Asterisk
Release Date June 21, 2012
Latest Revision June 21, 2012: 1
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-misc/asterisk < >= All supported architectures

Related bugreports: #413353, #418189, #418191


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

2.  Impact Information


Asterisk is an open source telephony engine and toolkit.


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).


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

3.  Resolution Information


There is no known workaround at this time.


All Asterisk users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

4.  References


Page updated June 21, 2012

Summary: This is a Gentoo Linux Security Advisory

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