Update to Asterisk 10.3.1.  This Fixes AST-2012-004, AST-2012-005,
and AST-2012-006.

The Asterisk Development Team has announced security releases for
Asterisk 1.6.2 , 1.8, and 10. The available security releases are
released as versions 1.6.2.24, 1.8.11.1, and 10.3.1.

The release of Asterisk 1.6.2.24, 1.8.11.1, and 10.3.1 resolve the
following two issues:

* A permission escalation vulnerability in Asterisk Manager
  Interface.  This would potentially allow remote authenticated
  users the ability to execute commands on the system shell with
  the privileges of the user running the Asterisk application.

* A heap overflow vulnerability in the Skinny Channel driver.
  The keypad button message event failed to check the length of
  a fixed length buffer before appending a received digit to the
  end of that buffer.  A remote authenticated user could send
  sufficient keypad button message events that th e buffer would
  be overrun.

In addition, the release of Asterisk 1.8.11.1 and 10.3.1 resolve
the following issue:

* A remote crash vulnerability in the SIP channel driver when
  processing UPDATE requests.  If a SIP UPDATE request was received
  indicating a connected line update after a channel was terminated
  but before the final destruction of the associated SIP dialog,
  Asterisk would attempt a connected line update on a non-existing
  channel, 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-2012-004, AST-2012-005, and
AST-2012-006, 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/asterisk/releases/ChangeLog-10.3.1

The security advisories are available at:

* http://downloads.asterisk.org/pub/security/AST-2012-004.pdf
* http://downloads.asterisk.org/pub/security/AST-2012-005.pdf
* http://downloads.asterisk.org/pub/security/AST-2012-006.pdf

Thank you for your continued support of Asterisk!

(jnemeth)