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.
*CVSS:
| Base Score: | 10 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 7.4 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
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.
References:
- Asterisk Web site: Asterisk | The Open Source PBX.
- BugTraq Mailing List, Fri Jun 09 2006 - 15:33:28 CDT : CORE-2006-0330: Asterisk PBX truncated video frame vulnerability.
- Bugtraq Mailing List, Tue Jun 06 2006 - 03:51:32 CDT: Asterisk 1.2.9 and Asterisk 1.0.11 Released - Security Fix.
- 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
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
Reported:
Jun 09, 2006
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.