CVEvulnerability

CVE-2007-5640

7.1 HIGH Published 2007-10-23 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2007-10-23
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
7.1 HIGH — AV:N/AC:M/Au:N/C:N/I:N/A:C

Description

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.

Affected configurations

• nortel business communications manager 50 • nortel business communications manager 50a • nortel business communications manager 50e • nortel business communications manager 200 • nortel business communications manager 400 • nortel business communications manager 1000 • nortel business communications manager srg50 • nortel business communications manager srg200 • nortel centrex ip client manager • nortel centrex ip element manager • nortel meridian option 11c • nortel meridian option 51c • nortel meridian option 61c • nortel meridian option 81c • nortel meridian sl100 cs2100 • nortel mobile voice client 2050

References