AST-2009-004: Remote Crash Vulnerability in RTP stack

           Asterisk Project Security Advisory - AST-2009-004

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| Product | Asterisk |
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| Summary | Remote Crash Vulnerability in RTP stack |
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| Nature of Advisory | Exploitable Crash |
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| Susceptibility | Remote unauthenticated sessions |
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| Severity | Critical |
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| Exploits Known | No |
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| Reported On | July 27, 2009 |
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| Reported By | Marcus Hunger <hunger AT sipgate DOT de> |
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| Posted On | August 2, 2009 |
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| Last Updated On | August 2, 2009 |
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| Advisory Contact | Mark Michelson <mmichelson AT digium DOT com> |
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| CVE Name | |
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| Description | An attacker can cause Asterisk to crash remotely by |
| | sending malformed RTP text frames. While the attacker |
| | can cause Asterisk to crash, he cannot execute arbitrary |
| | remote code with this exploit. |
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| Resolution | Users should upgrade to a version listed in the |
| | "Corrected In" section below. |
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| Links | |
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| Asterisk Project Security Advisories are posted at |
| http://www.asterisk.org/security |
| |
| This document may be superseded by later versions; if so, the latest |
| version will be posted at |
| http://downloads.digium.com/pub/security/AST-2009-004.pdf and |
| http://downloads.digium.com/pub/security/AST-2009-004.html |
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           Asterisk Project Security Advisory - AST-2009-004
          Copyright (c) 2009 Digium, Inc. All Rights Reserved.

Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.