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.
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
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.
Consequences:
Denial of Service
References:
- ASA-2007-016, Remote crash vulnerability in Skinny channel driver at http://ftp.digium.com/pub/asa/ASA-2007-016.pdf.
- Full-Disclosure Mailing List, Tue Jul 17 2007 - 17:59:59 CDT, ASA-2007-016: Remote crash vulnerability in Skinny channel driver at http://archives.neohapsis.com/archives/fulldisclosure/2007-07/0347.html.
- 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
- FrSIRT/ADV-2007-2563: Asterisk Products Remote Buffer Overflow and Multiple Denial of Service 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
Reported:
Jul 17, 2007
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