National Cyber-Alert System

Vulnerability Summary for CVE-2007-5639

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

External Source: BID

Name: 26122

Type: Patch Information

Hyperlink:http://www.securityfocus.com/bid/26122

External Source: CONFIRM

Name: http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654715

Type: Patch Information

Hyperlink:http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654715

External Source: XF

Name: nortel-ipphone-spoof-dos(37253)

Hyperlink:http://xforce.iss.net/xforce/xfdb/37253

External Source: BUGTRAQ

Name: 20071018 Nortel IP Phone Flooding Denial of Service

Hyperlink:http://www.securityfocus.com/archive/1/archive/1/482480/100/0/threaded

External Source: MISC

Name: http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt

Hyperlink:http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt

External Source: SREASON

Name: 3273

Hyperlink:http://securityreason.com/securityalert/3273