CVE-2013-1917

Severity: low (CVSS 1.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-05-13 · updated 2026-06-16
Weakness: CWE-20

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.

Affected products

xen: 3.1.3, 3.1.4, 3.2.0, 3.2.1, 3.2.2, 3.2.3 (+21)

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
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104537.html
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html

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