Description
The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.
References
- http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt
- 3273 third-party-advisory
- 20071018 Nortel IP Phone Flooding Denial of Service mailing-list
- 26122 vdb-entry
- nortel-ipphone-spoof-dos(37253) vdb-entry
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654715