Vulnerabilities > CVE-2007-5640 - Remote Denial of Service vulnerability in Nortel UNIStim IP Phone
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
COMPLETE network
nortel
Summary
The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from the IP Phone, Business Communications Manager (BCM), Mobile Voice Client, and other product lines, allow remote attackers to block calls and force re-registration via a resume message to the Signaling Server that has a spoofed source IP address for the phone. NOTE: the attack is more disruptive if a new spoofed resume message is sent after each re-registration.
Vulnerable Configurations
References
- http://osvdb.org/41772
- http://secunia.com/advisories/27234
- http://securityreason.com/securityalert/3274
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654641
- http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_forced_re-authentication_v1.0.txt
- http://www.securityfocus.com/archive/1/482481/100/0/threaded
- http://www.securityfocus.com/bid/26124
- https://exchange.xforce.ibmcloud.com/vulnerabilities/37254