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.

References

http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104537.html

http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html

http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html

http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html

http://lists.opensuse.org/opensuse-updates/2013-06/msg00049.html

http://secunia.com/advisories/55082

http://security.gentoo.org/glsa/glsa-201309-24.xml

http://www.debian.org/security/2012/dsa-2662

http://www.openwall.com/lists/oss-security/2013/04/18/8

http://www.securitytracker.com/id/1028455

Details

Source: Mitre, NVD

Risk Information

CVSS v2