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Security Advisories

Stay up to date with the latest security advisories for the Asterisk Project.

AST-2013-001: Buffer Overflow Exploit Through SIP SDP Header

Mar 27, 2013

AST-2012-015: Denial of Service through exploitation of device state caching

Jan 2, 2013

AST-2012-014: Crashes due to large stack allocations when using TCP

Jan 2, 2013

Asterisk 1.8.11-cert7,, 10.7.1, 10.7.1-digiumphones Now Available (Security Release)

Aug 30, 2012

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-cert7,, 10.7.1, and 10.7.1-digiumphones.

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

The release of Asterisk 1.8.11-cert7,, 10.7.1, and 10.7.1-digiumphones 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. Please note that the README-SERIOUSLY.bestpractices.txt file delivered with Asterisk has been updated due to this and other related vulnerabilities fixed in previous versions of Asterisk.
  • When an IAX2 call is made using the credentials of a peer defined in a dynamic Asterisk Realtime Architecture (ARA) backend, the ACL rules for that peer are not applied to the call attempt. This allows for a remote attacker who is aware of a peer's credentials to bypass the ACL rules set for that peer.

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-2012-012 and AST-2012-013, 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!

AST-2012-013: ACL rules ignored when placing outbound calls by certain IAX2 users

Aug 30, 2012


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