Vigil@nce - Xen: information disclosure via GNTTABOP_setup_table
June 2014 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
GNTTABOP_setup_table of Xen, in order to obtain sensitive
information.
Impacted products: Unix (platform)
Severity: 1/4
Creation date: 25/06/2014
DESCRIPTION OF THE VULNERABILITY
The GNTTABOP_setup_table hypercall returns the list of Domain
Grant Table Pages.
However, the alloc_domain_struct() function of the
xen/arch/arm/domain.c file does not initialize a memory area
before returning it to the user.
A local attacker can therefore read a memory fragment via
GNTTABOP_setup_table of Xen, in order to obtain sensitive
information.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/Xen-information-disclosure-via-GNTTABOP-setup-table-14936