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AUSCERT External Security Bulletin Redistribution
ESB-2008.0587 -- [UNIX/Linux]
Asterisk - Remote crash vulnerability in ooh323 channel driver
6 June 2008
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Asterisk-Addons ooh323
Publisher: Asterisk
Operating System: UNIX variants (UNIX, Linux, OSX)
Impact: Denial of Service
Access: Remote/Unauthenticated
CVE Names: CVE-2008-2543
Original Bulletin:
http://downloads.digium.com/pub/security/AST-2008-009.html
- --------------------------BEGIN INCLUDED TEXT--------------------
Asterisk Project Security Advisory - AST-2008-009
+------------------------------------------------------------------------+
| Product | Asterisk-Addons |
|--------------------+---------------------------------------------------|
| Summary | Remote crash vulnerability in ooh323 channel |
| | driver |
|--------------------+---------------------------------------------------|
| Nature of Advisory | Remote crash |
|--------------------+---------------------------------------------------|
| Susceptibility | Remote unauthenticated sessions |
|--------------------+---------------------------------------------------|
| Severity | Major |
|--------------------+---------------------------------------------------|
| Exploits Known | No |
|--------------------+---------------------------------------------------|
| Reported On | May 29, 2008 |
|--------------------+---------------------------------------------------|
| Reported By | Tzafrir Cohen <tzafrir DOT cohen AT xorcom DOT |
| | com> |
|--------------------+---------------------------------------------------|
| Posted On | June 4, 2008 |
|--------------------+---------------------------------------------------|
| Last Updated On | June 4, 2008 |
|--------------------+---------------------------------------------------|
| Advisory Contact | Mark Michelson <mmichelson AT digium DOT com> |
|--------------------+---------------------------------------------------|
| CVE Name | CVE-2008-2543 |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Description | The ooh323 channel driver provided in Asterisk Addons |
| | used a TCP connection to pass commands internally. The |
| | payload of these packets included addresses of memory |
| | which were to be freed after the command was processed. |
| | By sending arbitrary data to the listening TCP socket, |
| | one could cause an almost certain crash since the |
| | command handler would attempt to free invalid memory. |
| | This problem was made worse by the fact that the |
| | listening TCP socket was bound to whatever IP address |
| | was specified by the "bindaddr" option in ooh323.conf |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Resolution | The TCP connection used by ooh323 has been replaced with |
| | a pipe. The effect of this change is that data from |
| | outside the ooh323 process may not be injected. |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Affected Versions |
|------------------------------------------------------------------------|
| Product | Release | |
| | Series | |
|----------------------------------+-------------+-----------------------|
| Asterisk Open Source | 1.0.x | N/A |
|----------------------------------+-------------+-----------------------|
| Asterisk Open Source | 1.2.x | N/A |
|----------------------------------+-------------+-----------------------|
| Asterisk Open Source | 1.4.x | N/A |
|----------------------------------+-------------+-----------------------|
| Asterisk Addons | 1.2.x | All versions prior to |
| | | 1.2.9 |
|----------------------------------+-------------+-----------------------|
| Asterisk Addons | 1.4.x | All versions prior to |
| | | 1.4.7 |
|----------------------------------+-------------+-----------------------|
| Asterisk Business Edition | A.x.x | N/A |
|----------------------------------+-------------+-----------------------|
| Asterisk Business Edition | B.x.x | N/A |
|----------------------------------+-------------+-----------------------|
| Asterisk Business Edition | C.x.x | N/A |
|----------------------------------+-------------+-----------------------|
| AsteriskNOW | pre-release | N/A |
|----------------------------------+-------------+-----------------------|
| Asterisk Appliance Developer Kit | 0.x.x | N/A |
|----------------------------------+-------------+-----------------------|
| s800i (Asterisk Appliance) | 1.0.x | N/A |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Corrected In |
|------------------------------------------------------------------------|
| Product | Release |
|------------------------------------------+-----------------------------|
| Asterisk Addons 1.2 | 1.2.9 |
|------------------------------------------+-----------------------------|
| Asterisk-Addons 1.4 | 1.4.7 |
|------------------------------------------+-----------------------------|
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Links | |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| 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-2008-009.pdf and |
| http://downloads.digium.com/pub/security/AST-2008-009.html |
+------------------------------------------------------------------------+
+------------------------------------------------------------------------+
| Revision History |
|------------------------------------------------------------------------|
| Date | Editor | Revisions Made |
|-------------------+----------------------+-----------------------------|
| Jun 3, 2008 | Mark Michelson | Initial draft |
+------------------------------------------------------------------------+
Asterisk Project Security Advisory - AST-2008-009
Copyright (c) 2008 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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