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Vigil@nce - OpenSSH: NULL pointer dereference via a NEWKEYS message

March 2018 by Vigil@nce

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

SYNTHESIS OF THE VULNERABILITY

An attacker can force a NULL pointer to be dereferenced in OpenSSH
via an out of order NEWKEYS message, in order to trigger a denial
of service.

 Impacted products: Debian, OpenSSH.
 Severity: 2/4.
 Creation date: 22/01/2018.

DESCRIPTION OF THE VULNERABILITY

An attacker can force a NULL pointer to be dereferenced in OpenSSH
via an out of order NEWKEYS message, in order to trigger a denial
of service.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/OpenSSH-NULL-pointer-dereference-via-a-NEWKEYS-message-25131


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