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Unread 03-21-2007, 02:23 PM   #1
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Default Cisco IP Phone 7940/7960 Vulnerability

Cisco released updates to their SIP firmware to resolve DOS (denial of service) vulnerabilities with the 7940/7960 IP phones.

The vulnerability is caused due to an error within the handling of certain SIP INVITE messages. This can be exploited to reboot the device by sending a specially crafted INVITE message with a malformed "sipURI" field of the Remote-Party-ID.
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