Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2007-5640

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
23/10/2007
Last modified:
09/04/2025

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.

Impact

Vector 2.0
AV:N/AC:M/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.10 HIGH
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.10
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:nortel:multimedia_communication_server_5100:*:*:*:*:*:*:*:*
cpe:2.3:a:nortel:multimedia_communication_server_5200:*:*:*:*:*:*:*:*
cpe:2.3:a:nortel:communications_server:1000e:*:*:*:*:*:*:*
cpe:2.3:a:nortel:communications_server:1000m:*:*:*:*:*:*:*
cpe:2.3:a:nortel:communications_server:1000s:*:*:*:*:*:*:*
cpe:2.3:a:nortel:communications_server:2100:*:*:*:*:*:*:*
cpe:2.3:h:nortel:ip_audio_conference_phone_2033:*:*:*:*:*:*:*:*
cpe:2.3:h:nortel:ip_phone_1110:*:*:*:*:*:*:*:*
cpe:2.3:h:nortel:ip_phone_1120e:*:*:*:*:*:*:*:*
cpe:2.3:h:nortel:ip_phone_1140e:*:*:*:*:*:*:*:*
cpe:2.3:h:nortel:ip_phone_1150e:*:*:*:*:*:*:*:*
cpe:2.3:h:nortel:ip_phone_2001:*:*:*:*:*:*:*:*
cpe:2.3:h:nortel:ip_phone_2002:*:*:*:*:*:*:*:*
cpe:2.3:h:nortel:ip_phone_2004:*:*:*:*:*:*:*:*
cpe:2.3:h:nortel:ip_phone_2007:*:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools