Asterisk Skinny channel driver denial of service
| asterisk-skinny-channel-dos (35870) |  Medium Risk |
Description:
Asterisk is vulnerable to a denial of service, caused by a vulnerability in the Skinny channel driver. By sending a specially-crafted "CAPABILITIES_RES_MESSAGE" packet with an overly large capabilities count, a remote attacker with an authenticated session could exploit this vulnerability to cause the driver to segfault.
*CVSS:
| Base Score: | 2.1 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Required |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 1.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to ASA-2007-019 for patch, upgrade or suggested workaround information. See References.
References:
- ASA-2007-019: Remote crash vulnerability in Skinny channel driver.
- BID-25228: Asterisk Skinny Channel Driver Remote Denial of Service Vulnerability
- CVE-2007-4280: The Skinny channel driver (chan_skinny) in Asterisk Open Source before 1.4.10, AsteriskNOW before beta7, Appliance Developer Kit before 0.7.0, and Appliance s800i before 1.0.3 allows remote authenticated users to cause a denial of service (application crash) via a CAPABILITIES_RES_MESSAGE packet with a capabilities count larger than the capabilities_res_message array population.
- SA26340: Asterisk Skinny Channel Driver Denial of Service
- SECTRACK ID: 1018536: Asterisk chan_skinny Driver Lets Remote Authenticated Users Deny Service
- VUPEN/ADV-2007-2808: Asterisk Products Skinny Channel Driver Remote Denial of Service Vulnerability
Platforms Affected:
- Digium Asterisk Appliance 1.0.x - 1.0.3
- Digium Asterisk Appliance Developer Kit 0.x.x - 0.7.0
- Digium Asterisk Open Source 1.4.x
- Digium AsteriskNOW pre-release -beta7
Reported:
Aug 07, 2007
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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.