Vigil@nce - Xen: denial of service via MSR_MISC_ENABLE
October 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulnerability
SYNTHESIS OF THE VULNERABILITY
Impacted products: XenServer, Debian, Fedora, openSUSE Leap, SUSE
Linux Enterprise Desktop, SLES, Xen.
Severity: 1/4.
Consequences: denial of service on server, denial of service on
service.
Provenance: privileged shell.
Confidence: confirmed by the editor (5/5).
Creation date: 22/09/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker, inside a guest system, can trigger a fatal error via
MSR_MISC_ENABLE of Xen, in order to trigger a denial of service on
the host system.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Xen-denial-of-service-via-MSR-MISC-ENABLE-33385