asterisk users - Jul 2012 - Asterisk 1.8.11-cert4, 1.8.13.1, 10.5.2, 10.5.2-digiumphones Now Available (Security Release)

The Asterisk Development Team has announced security releases for Certified
Asterisk 1.8.11 and Asterisk 1.8 and 10. The available security releases are
released as versions 1.8.11-cert4, 1.8.13.1, 10.5.2, and 10.5.2-digiumphones.

These releases are available for immediate download at
http://downloads.asterisk.org/pub/telephony/asterisk/releases

The release of Asterisk 1.8.11-cert4, 1.8.13.1, 10.5.2, and 10.5.2-digiumphones
resolve the following two issues:

* If Asterisk sends a re-invite and an endpoint responds to the re-invite with
  a provisional response but never sends a final response, then the SIP dialog
  structure is never freed and the RTP ports for the call are never released. If
  an attacker has the ability to place a call, they could create a denial of
  service by using all available RTP ports.   

* If a single voicemail account is manipulated by two parties simultaneously,
  a condition can occur where memory is freed twice causing a crash.

These issues and their resolution are described in the security advisories.

For more information about the details of these vulnerabilities, please read
security advisories AST-2012-010 and AST-2012-011, which were released at the
same time as this announcement.

For a full list of changes in the current releases, please see the ChangeLogs:

http://downloads.asterisk.org/pub/telephony/certified-asterisk/releases/ChangeLog-1.8.11-cert4
http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-1.8.13.1
http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-10.5.2
http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-10.5.2-digiumphones

The security advisories are available at:

 * http://downloads.asterisk.org/pub/security/AST-2012-010.pdf
 * http://downloads.asterisk.org/pub/security/AST-2012-011.pdf

Thank you for your continued support of Asterisk!