[asterisk-security] Asterisk 1.8.15-cert3, 11.2-cert2, 1.8.23.1, 10.12.3, 10.12.3-digiumphones, 11.5.1 Now Available (Security Release)

[Asterisk Development Team]

The Asterisk Development Team has announced security releases for Certified
Asterisk 1.8.15, 11.2, and Asterisk 1.8, 10, and 11. The available security releases
are released as versions 1.8.15-cert2, 11.2-cert2, 1.8.23.1, 10.12.3, 10.12.3-digiumphones,
and 11.5.1.

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

The release of these versions resolve the following issues:

* A remotely exploitable crash vulnerability exists in the SIP channel driver if
  an ACK with SDP is received after the channel has been terminated. The
  handling code incorrectly assumes that the channel will always be present.

* A remotely exploitable crash vulnerability exists in the SIP channel driver if
  an invalid SDP is sent in a SIP request that defines media descriptions before
  connection information. The handling code incorrectly attempts to reference
  the socket address information even though that information has not yet been
  set.                            

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

For more information about the details of these vulnerabilities, please read
security advisories AST-2013-004 and AST-2013-005, 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-1.8.15-cert3
http://downloads.asterisk.org/pub/telephony/certified-asterisk/releases/ChangeLog-11.2-cert2
http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-1.8.23.1
http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-10.12.3
http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-10.12.3-digiumphones
http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-11.5.1

The security advisories are available at:

 * http://downloads.asterisk.org/pub/security/AST-2013-004.pdf
 * http://downloads.asterisk.org/pub/security/AST-2013-005.pdf

Thank you for your continued support of Asterisk!