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>> Cisco IP Phone 7940 SIP INVITE Remote Denial of Service Vulnerability
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Title : Cisco IP Phone 7940 SIP INVITE Remote Denial of Service Vulnerability
VUPEN ID : VUPEN/ADV-2007-4106
CVE ID : CVE-2007-5583 - CVE-2007-6370
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-12-06
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A vulnerability has been identified in Cisco IP Phone 7940, which could be exploited by attackers to cause a denial of service. This issue is caused by an error when handling a sequence of SIP INVITE messages containing a "Request-URI" without a username, which could be exploited by attackers to cause a vulnerable device to reboot, creating a denial of service condition.
Affected Products
Cisco IP Phone 7940 version P0S3-08-7-00 and prior
Solution
VUPEN Security is not aware of any vendor-supplied patch.
References
http://www.vupen.com/english/advisories/2007/4106
Credits
Vulnerability reported by Madynes research team (INRIA Lorraine).
ChangeLog
2007-12-06 : Initial release
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