Asterisk IAX2 channel driver truncated video frame buffer overflow
| asterisk-iax2-videoframe-bo (27045) |  High Risk |
Description:
Asterisk is vulnerable to a buffer overflow in the IAX2 channel driver (chan_iax2). By sending a specially-crafted IAX2 video frame to UDP port 4569 on a vulnerable system, a remote attacker could overflow a buffer and cause the system to crash or possibly execute arbitrary code on the system with privileges of the Asterisk daemon.
Platforms Affected:
- Debian, Debian Linux 3.1
- Digium, Asterisk Open Source prior to 1.0.11.1
- Digium, Asterisk Open Source prior to 1.2.9.1
- Gentoo, Linux
Remedy:
Upgrade to the latest version of Asterisk (1.2.9.1 or later) or (1.0.11.1 or later), available from the Asterisk Web site. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 2006-06-15 for patch, upgrade, or suggested workaround information. See References.
For Debian GNU/Linux:
Refer to DSA-1126-1 for patch, upgrade, or suggested workaround information. See References.
Consequences:
Gain Access
References:
- Asterisk Web site, Asterisk | The Open Source PBX at http://www.asterisk.org/.
- BugTraq Mailing List, Fri Jun 09 2006 - 15:33:28 CDT , CORE-2006-0330: Asterisk PBX truncated video frame vulnerability at http://archives.neohapsis.com/archives/bugtraq/2006-06/0139.html.
- Bugtraq Mailing List, Tue Jun 06 2006 - 03:51:32 CDT, Asterisk 1.2.9 and Asterisk 1.0.11 Released - Security Fix at http://archives.neohapsis.com/archives/bugtraq/2006-06/0015.html.
- BID-18295: Asterisk IAX2 Remote Buffer Overflow Vulnerability
- CVE-2006-2898: The IAX2 channel driver (chan_iax2) for Asterisk 1.2.x before 1.2.9 and 1.0.x before 1.0.11 allows remote attackers to cause a denial of service (crash) and execute arbitrary code via truncated IAX 2 (IAX2) video frames, which bypasses a length check and leads to a buffer overflow involving negative length check. NOTE: the vendor advisory claims that only a DoS is possible, but the original researcher is reliable.
- DSA-1126: asterisk -- buffer overflow
- GLSA-200606-15: Asterisk: IAX2 video frame buffer overflow
- SA20497: Asterisk IAX2 Channel Driver Code Execution Vulnerability
- SECTRACK ID: 1016236: Asterisk IAX2 Channel Driver Lets Remote Users Deny Service
- SUSE-SR:2006:015: SUSE Security Summary Report
- VUPEN/ADV-2006-2181: Asterisk IAX2 Remote Code Execution and Denial of Service Vulnerabilities
Reported:
Jun 09, 2006
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