Asterisk SIP channel driver denial of service
| asterisk-channeldriver-dos (29664) |  Low Risk |
Description:
Asterisk SIP is vulnerable to a denial of service, caused by an unspecified error in the SIP channel driver [chan_sip.c]. By sending a malicious request, a remote attacker could cause a "pvt" structure to be created that would consume all available resources and cause the service to crash.
*CVSS:
| Base Score: | 5.3 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 3.9 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of Asterisk (version 1.2.13 or 1.4.0-beta3 or later), available from the Asterisk Web site. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 200610-15 for patch, upgrade, or suggested workaround information. See References.
References:
- Asterisk Web site: Asterisk | The Open Source PBX.
- BID-20835: Asterisk Chan_Sip.c Unspecified Remote Denial of Service Vulnerability
- CVE-2006-5445: Unspecified vulnerability in the SIP channel driver (channels/chan_sip.c) in Asterisk 1.2.x before 1.2.13 and 1.4.x before 1.4.0-beta3 allows remote attackers to cause a denial of service (resource consumption) via unspecified vectors that result in the creation of a real pvt structure that uses more resources than necessary.
- GLSA-200610-15: Asterisk: Multiple vulnerabilities
- OSVDB ID: 29973: Asterisk SIP Channel Driver (chan_sip) Unspecified Remote DoS
- SUSE-SA:2006:069: asterisk remote denial of service problem
- VUPEN/ADV-2006-4098: Asterisk SIP Channel Driver Request Handling Remote Denial of Service Vulnerability
Platforms Affected:
- Digium Asterisk Open Source 1.2.12.1
- Gentoo Linux
- PHP PHP 4.1.0
- SUSE SuSE Linux 10.1
- SuSE SuSE SLED 10
Reported:
Oct 18, 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.