CVE-2013-1917

Name	CVE-2013-1917
Description	Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction.
Source	CVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)
References	DSA-2662-1
NVD severity	low (attack range: local)
Debian/oldstable	not vulnerable.
Debian/stable	not vulnerable.
Debian/testing	not vulnerable.
Debian/unstable	not vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xen (PTS)	squeeze (security), squeeze	4.0.1-5.11	fixed
	wheezy	4.1.4-3+deb7u3	fixed
	wheezy (security)	4.1.4-3+deb7u4	fixed
	jessie	4.4.1-6	fixed
	sid	4.4.1-7	fixed

The information above is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
xen	source	(unstable)	4.1.4-3	low
xen	source	squeeze	4.0.1-5.10	low	DSA-2662-1

http://lists.xen.org/archives/html/xen-announce/2013-04/msg00005.html