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AUSCERT External Security Bulletin Redistribution
ESB-2009.1579
Asterisk RTP Remote Crash Vulnerability
2 December 2009
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Asterisk
Publisher: Asterisk
Operating System: UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2009-4055
Original Bulletin:
http://downloads.asterisk.org/pub/security/AST-2009-010.html
- --------------------------BEGIN INCLUDED TEXT--------------------
Asterisk Project Security Advisory - AST-2009-010
+------------------------------------------------------------------------+
| Product | Asterisk |
|----------------------+-------------------------------------------------|
| Summary | RTP Remote Crash Vulnerability |
|----------------------+-------------------------------------------------|
| Nature of Advisory | Denial of Service |
|----------------------+-------------------------------------------------|
| Susceptibility | Remote unauthenticated sessions |
|----------------------+-------------------------------------------------|
| Severity | Critical |
|----------------------+-------------------------------------------------|
| Exploits Known | No |
|----------------------+-------------------------------------------------|
| Reported On | November 13, 2009 |
|----------------------+-------------------------------------------------|
| Reported By | issues.asterisk.org user amorsen |
|----------------------+-------------------------------------------------|
| Posted On | November 30, 2009 |
|----------------------+-------------------------------------------------|
| Last Updated On | November 30, 2009 |
|----------------------+-------------------------------------------------|
| Advisory Contact | David Vossel < dvossel AT digium DOT com > |
|----------------------+-------------------------------------------------|
| CVE Name | CVE-2009-4055 |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Description | An attacker sending a valid RTP comfort noise payload |
| | containing a data length of 24 bytes or greater can |
| | remotely crash Asterisk. |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Resolution | Upgrade to one of the versions of Asterisk listed in the |
| | "Corrected In" section, or apply a patch specified in the |
| | "Patches" section. |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Affected Versions |
|------------------------------------------------------------------------|
| Product | Release Series | |
|----------------------------------+----------------+--------------------|
| Asterisk Open Source | 1.2.x | All versions |
|----------------------------------+----------------+--------------------|
| Asterisk Open Source | 1.4.x | All versions |
|----------------------------------+----------------+--------------------|
| Asterisk Open Source | 1.6.x | All versions |
|----------------------------------+----------------+--------------------|
| Asterisk Business Edition | B.x.x | All versions |
|----------------------------------+----------------+--------------------|
| Asterisk Business Edition | C.x.x | All versions |
|----------------------------------+----------------+--------------------|
| s800i (Asterisk Appliance) | 1.3.x | All versions |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Corrected In |
|------------------------------------------------------------------------|
| Product | Release |
|---------------------------------------------+--------------------------|
| Asterisk Open Source | 1.2.37 |
|---------------------------------------------+--------------------------|
| Asterisk Open Source | 1.4.27.1 |
|---------------------------------------------+--------------------------|
| Asterisk Open Source | 1.6.0.19 |
|---------------------------------------------+--------------------------|
| Asterisk Open Source | 1.6.1.11 |
|---------------------------------------------+--------------------------|
| Asterisk Business Edition | B.2.5.13 |
|---------------------------------------------+--------------------------|
| Asterisk Business Edition | C.2.4.6 |
|---------------------------------------------+--------------------------|
| Asterisk Business Edition | C.3.2.3 |
|---------------------------------------------+--------------------------|
| S800i (Asterisk Appliance) | 1.3.0.6 |
+------------------------------------------------------------------------+
+-----------------------------------------------------------------------------+
| Patches |
|-----------------------------------------------------------------------------|
| Link |Branch|
|----------------------------------------------------------------------+------|
|http://downloads.asterisk.org/pub/security/AST-2009-010-1.2.diff.txt |1.2 |
|----------------------------------------------------------------------+------|
|http://downloads.asterisk.org/pub/security/AST-2009-010-1.4.diff.txt |1.4 |
|----------------------------------------------------------------------+------|
|http://downloads.asterisk.org/pub/security/AST-2009-010-1.6.0.diff.txt|1.6.0 |
|----------------------------------------------------------------------+------|
|http://downloads.asterisk.org/pub/security/AST-2009-010-1.6.1.diff.txt|1.6.1 |
+-----------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Links | https://issues.asterisk.org/view.php?id=16242 |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| 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-2009-010.pdf and |
| http://downloads.digium.com/pub/security/AST-2009-010.html |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Revision History |
|------------------------------------------------------------------------|
| Date | Editor | Revisions Made |
|------------------+---------------------+-------------------------------|
| 2009-09-03 | David Vossel | Initial release |
+------------------------------------------------------------------------+
Asterisk Project Security Advisory - AST-2009-010
Copyright (c) 2009 Digium, Inc. All Rights Reserved.
Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.
- --------------------------END INCLUDED TEXT--------------------
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