Linksys SPA941 VoIP Phone SIP denial of service
| linksys-spa941-sip-dos (33856) |  Low Risk |
Description:
The Linksys SPA941 VoIP Phone firmware is vulnerable to a denial of service attack, caused by improper handling of SIP packets. By sending a specially-crafted SIP packet containing a \377 character, a remote attacker could crash the device.
Platforms Affected:
- Linksys, SPA941 5.1.5
Remedy:
No remedy available as of July 4, 2009.
Consequences:
Denial of Service
References:
- Full-Disclosure Mailing List, Tue Apr 24 2007 - 07:34:27 CDT, Linksys SPA941 remote DOS with \377 character at http://archives.neohapsis.com/archives/fulldisclosure/2007-04/0643.html.
- Linksys SPA941 VoIP Phone Web site, Linksys.com - Products/Business Solutions/VOIP/Linksys Voice System/SPA941 at http://www.linksys.com/servlet/Satellite?c=L_Product_C2&childpagename=US%2FLayout&cid=1139414816993&pagename=Linksys%2FCommon%2FVisitorWrapper&lid=1699354250B08.
- BID-23619: Linksys SPA941 \377 Character Denial of Service Vulnerability
- CVE-2007-2270: The Linksys SPA941 VoIP Phone allows remote attackers to cause a denial of service (device reboot) via a 0377 (0xff) character in the From header, and possibly certain other locations, in a SIP INVITE request.
- SA25031: Linksys SPA941 SIP Message Denial of Service
- SECTRACK ID: 1017957: Linksys SPA941 Phone Can Be Crashed By Remote Users
- VUPEN/ADV-2007-1532: Linksys SPA941 SIP Phone Messages Handling Remote Denial of Service Vulnerability
Reported:
Apr 24, 2007
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