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Vigil@nce - Junos: denial of service via regcomp

January 2014 by Vigil@nce

This bulletin was written by Vigil@nce : http://vigilance.fr/offer

SYNTHESIS OF THE VULNERABILITY

An attacker can trigger a vulnerability in regcomp() of Junos, in
order to trigger a denial of service.

Impacted products: Juniper J-Series, JUNOS

Severity: 2/4

Creation date: 08/01/2014

DESCRIPTION OF THE VULNERABILITY

The bulletin VIGILANCE-VUL-10183 (https://vigilance.fr/tree/1/10183?w=66901)
describes a vulnerability which allows an attacker to stop an
application using the regcomp() function, when he can transmit a
special regular expression to this application.

Parameters given to some CLI commands of Junos are regular
expressions.

An attacker can therefore trigger a vulnerability in regcomp() of
Junos, in order to trigger a denial of service.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Junos-denial-of-service-via-regcomp-14043


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