Asterisk Skinny driver denial of service
| asterisk-skinny-driver-dos (35478) |  Low Risk |
Description:
Asterisk is vulnerable to a denial of service, caused by a vulnerability in the Skinny channel driver. By sending a specially-crafted packet with an overly large memcpy, a remote attacker could exploit this vulnerability to crash the application.
*CVSS:
| Base Score: | 3.5 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 2.9 |
| Exploitability: | Functional |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to ASA-2007-016 for patch, upgrade or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SR:2007:015 for patch, upgrade, or suggested workaround information. See References.
For Debian/GNU Linux:
Refer to DSA-1358-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- ASA-2007-016: Remote crash vulnerability in Skinny channel driver.
- Full-Disclosure Mailing List, Tue Jul 17 2007 - 17:59:59 CDT: ASA-2007-016: Remote crash vulnerability in Skinny channel driver.
- BID-24950: Asterisk Multiple Remote Denial of Service Vulnerabilities
- CVE-2007-3764: The Skinny channel driver (chan_skinny) in Asterisk before 1.2.22 and 1.4.x before 1.4.8, Business Edition before B.2.2.1, AsteriskNOW before beta7, Appliance Developer Kit before 0.5.0, and s800i before 1.0.2 allows remote attackers to cause a denial of service (crash) via a certain data length value in a crafted packet, which results in an overly large memcpy.
- DSA-1358: asterisk -- several vulnerabilities
- GLSA-200802-11: Asterisk: Multiple vulnerabilities
- SA26099: Asterisk Multiple Vulnerabilities
- SECTRACK ID: 1018407: Asterisk STUN, Skinny Channel Driver, and IAX2 Channel Driver Bugs Let Remote Users Deny Service or Execute Arbitrary Code
- SUSE-SR:2007:015: SUSE Security Summary Report
- VUPEN/ADV-2007-2563: Asterisk Products Remote Buffer Overflow and Multiple Denial of Service Vulnerabilities
Platforms Affected:
- Debian Debian Linux 3.1
- Debian Debian Linux 4.0
- Digium Asterisk Appliance 1.0.x
- Digium Asterisk Appliance Developer Kit 0.x.x
- Digium Asterisk Business Edition A.x.x
- Digium Asterisk Business Edition B.x.x
- Digium Asterisk Open Source 1.0.0
- Digium Asterisk Open Source 1.2.x
- Digium Asterisk Open Source 1.4.x
- Digium AsteriskNOW pre-release
- Gentoo Linux
- SUSE SuSE Linux 10.0
- SUSE SuSE Linux 10.1
- SUSE SuSE Linux
Reported:
Jul 17, 2007
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For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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.