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Vigil@nce - Juniper QFX: low entropie

June 2015 by Vigil@nce

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

SYNTHESIS OF THE VULNERABILITY

An attacker can potentially guess SSH or signature keys used by
Juniper QFX.

Impacted products: JUNOS

Severity: 2/4

Creation date: 08/04/2015

DESCRIPTION OF THE VULNERABILITY

The Juniper QFX product uses the RANDOM_INTERRUPT entropy source,
in order to generate random numbers.

However, the number of collected bytes is too low to ensure that
randoms generated after the boot are not predictable.

An attacker can therefore potentially guess SSH or signature keys
used by Juniper QFX.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Juniper-QFX-low-entropie-16561


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