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

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CVE-2007-5638

Severity CVSS v4.0:
Pending analysis
Type:
CWE-200 Information Leak / Disclosure
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), and other product lines, use only 65536 different values in the 32-bit ID number field of an RUDP datagram, which makes it easier for remote attackers to guess the RUDP ID and spoof messages. NOTE: this can be leveraged for an eavesdropping attack by sending many Open Audio Stream messages.

Impact

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

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

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

Base Score 2.0
4.30
Severity 2.0
MEDIUM

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