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Vigil@nce: Cisco 7600, denial of service via SBC

March 2009 by Vigil@nce

SYNTHESIS OF THE VULNERABILITY

An attacker can send a malicious packet in order to stop the
Session Border Controller module on the Cisco 7600 router.

Gravity: 2/4

Consequences: denial of service of service

Provenance: internet client

Means of attack: no proof of concept, no attack

Ability of attacker: expert (4/4)

Confidence: confirmed by the editor (5/5)

Diffusion of the vulnerable configuration: high (3/3)

Creation date: 04/03/2009

IMPACTED PRODUCTS

 Cisco Router

DESCRIPTION OF THE VULNERABILITY

The SBC (Cisco Session Border Controller) module can be installed
on a Cisco 7600 router to establish interconnections, for VoIP.
This module listens on the port 2000/tcp.

However, when this module receives malformed data, it stops (but
the router is not stopped). Technical details are unknown.

An attacker can therefore send a malicious TCP packet in order to
stop the Session Border Controller module on the Cisco 7600 router.

CHARACTERISTICS

Identifiers: 109483, 109611, BID-33975, BID-34003,
cisco-sa-20090304-sbc, CSCsq18958, CVE-2009-0619,
VIGILANCE-VUL-8508

http://vigilance.fr/vulnerability/Cisco-7600-denial-of-service-via-SBC-8508


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