Cisco IP Phone SIP INVITE denial of service
| cisco-ipphone-sip-invite-dos (33098) |  Low Risk |
Description:
Cisco IP Phone 7940 and 7960 running firmware P0S3-07-4-00 are vulnerable to a denial of service attack, caused by the improper handling of SIP INVITE messages. A remote attacker could send a specially-crafted INVITE message containing a malformed "sipURI" field of the Remote-Party-ID to cause the device to reboot.
Platforms Affected:
- Cisco, IP Phone 7940
- Cisco, IP Phone 7960
Remedy:
Refer to cisco-sr-20070320-sip for upgrade information. See References.
Consequences:
Denial of Service
References:
- Cisco Support Web site, Download Software at http://www.cisco.com/public/sw-center/.
- cisco-sr-20070320-sip, Cisco Security Response to: Cisco IP Phone 7940/7960 SIP INVITE Denial of Service at http://www.cisco.com/warp/public/707/cisco-sr-20070320-sip.shtml.
- Full-Disclosure Mailing List, Tue Mar 20 2007 - 03:28:30 CDT, CISCO Phone 7940 DOS vulnerability at http://archives.neohapsis.com/archives/fulldisclosure/2007-03/0271.html.
- Full-Disclosure Mailing List, Tue Mar 20 2007 - 09:53:33 CDT, Re: CISCO Phone 7940 DOS vulnerability at http://archives.neohapsis.com/archives/fulldisclosure/2007-03/0277.html.
- BID-23047: Cisco 7940/7960 Phone SIP Invite Remote Denial of Service Vulnerability
- CVE-2007-1542: Unspecified vulnerability in the Cisco IP Phone 7940 and 7960 running firmware before POS8-6-0 allows remote attackers to cause a denial of service via the Remote-Party-ID sipURI field in a SIP INVITE request. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
- FrSIRT/ADV-2007-1023: Cisco IP Phone 7940 and 7960 SIP INVITE Request Denial of Service Vulnerability
- SA24600: Cisco IP Phone 7940/7960 SIP INVITE Denial of Service Vulnerability
- SECTRACK ID: 1017797: Cisco 7940/7960 IP Phones Can Be Crashed With a SIP INVITE Message
Reported:
Mar 20, 2007
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