Vigil@nce - Xen: denial of service via domctl
April 2015 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker in a guest system can call three domctl of Xen, in
order to trigger a denial of service.
– Impacted products: Fedora, Unix (platform)
– Severity: 1/4
– Creation date: 31/03/2015
DESCRIPTION OF THE VULNERABILITY
The domctl interface is used to manipulate Xen information.
However, the XEN_DOMCTL_gettscinfo, XEN_DOMCTL_settscinfo and
XEN_DOMCTL_resumedomain operations are not safe, and can be used
to block the host system.
An attacker in a guest system can therefore call three domctl of
Xen, in order to trigger a denial of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/Xen-denial-of-service-via-domctl-16504