Asterisk 11.6-cert6, 11.12.1, 12.5.1 Now Available (Security Release)

The Asterisk Development Team has announced security releases for Certified Asterisk 11.6 and Asterisk 11 and 12. The available security releases are released as versions 11.6-cert6, 11.12.1, and 12.5.1. These releases are available for immediate download at

Please note that the release of these versions resolves the following security vulnerability:

  • AST-2014-010: Remote Crash when Handling Out of Call Message in Certain Dialplan Configurations

Additionally, the release of Asterisk 12.5.1 resolves the following security vulnerability:

  • AST-2014-009: Remote Crash Based on Malformed SIP Subscription Requests

Note that the crash described in AST-2014-010 can be worked around through dialplan configuration. Given the likelihood of the issue, an advisory was deemed to be warranted.

For more information about the details of these vulnerabilities, please read security advisories AST-2014-009 and AST-2014-010, which were released at the same time as this announcement.

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

The security advisories are available at:

Thank you for your continued support of Asterisk!

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