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Vigil@nce - Xen: information disclosure via XEN_DOMCTL_gettscinfo

May 2015 by Vigil@nce

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

SYNTHESIS OF THE VULNERABILITY

A local attacker can read a memory fragment via
XEN_DOMCTL_gettscinfo or XEN_SYSCTL_getdomaininfolist of Xen, in
order to obtain sensitive information.

 Impacted products: Fedora, Unix (platform)
 Severity: 1/4
 Creation date: 21/04/2015

DESCRIPTION OF THE VULNERABILITY

The Xen product implements the XEN_DOMCTL_gettscinfo and
XEN_SYSCTL_getdomaininfolist ioctls.

However, the two associated functions do not initialize a memory
area before returning it to the user.

A local attacker can therefore read a memory fragment via
XEN_DOMCTL_gettscinfo or XEN_SYSCTL_getdomaininfolist of Xen, in
order to obtain sensitive information.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Xen-information-disclosure-via-XEN-DOMCTL-gettscinfo-16663


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