Vigil@nce - OpenBSD: denial of service via virtio
December 2014 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can use virtio of OpenBSD, in order to trigger a
denial of service.
Impacted products: OpenBSD
Severity: 1/4
Creation date: 11/12/2014
DESCRIPTION OF THE VULNERABILITY
The virtio interface of the OpenBSD kernel is used by guest
systems to access to virtualized hardware.
Memory barriers force the processor to use a defined sequence on
memory operations.
However, virtio does not use memory barriers.
An attacker can therefore use virtio of OpenBSD, in order to
trigger a denial of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/OpenBSD-denial-of-service-via-virtio-15784