Asterisk SIP response packets denial of service
| asterisk-sip-response-dos (33892) |  Low Risk |
Description:
Asterisk is vulnerable to a denial of service, caused by the improper handling of SIP response packets by the SIP channel driver. A remote attacker could send a specially-crafted SIP response packet to the channel driver to cause a segmentation fault, resulting in a denial of service.
Platforms Affected:
- Debian, Debian Linux 3.1
- Debian, Debian Linux 4.0
- Digium, Asterisk Appliance Developer Kit 0.x.x - 0.4.0
- 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 Beta5 and prior
- Novell, OpenSUSE 10.2
- SuSE, SuSE SLES 9
Remedy:
Refer to ASA-2007-011 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-2007-011, Multiple problems in SIP channel parser handling response codes at http://asterisk.org/node/48351.
- Asterisk Web site, Asterisk- Downloads at http://asterisk.org/downloads.
- Full-Disclosure Mailing List, Tue Apr 24 2007 - 18:22:21 CDT, ASA-2007-011: Multiple problems in SIP channel parser handling response codes at http://archives.neohapsis.com/archives/fulldisclosure/2007-04/0651.html.
- BID-24359: Asterisk SIP Channel Driver UDP Packets Remote Denial of Service Vulnerability
- CVE-2007-2297: The SIP channel driver (chan_sip) in Asterisk before 1.2.18 and 1.4.x before 1.4.3 does not properly parse SIP UDP packets that do not contain a valid response code, which allows remote attackers to cause a denial of service (crash).
- DSA-1358: asterisk -- several vulnerabilities
- SECTRACK ID: 1017954: Asterisk SIP Error Response Handling Bugs Let Remote Users Deny Service
- SUSE-SA:2007:034: Asterisk security update
Reported:
Apr 25, 2007
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