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.

Category

1.9
CVSS
Severity: Low
CVSS 2.0 •
EPSS 0.07%
Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html vendor advisory
http://secunia.com/advisories/55082 third party advisory
http://www.securitytracker.com/id/1028455 vdb entry
http://security.gentoo.org/glsa/glsa-201309-24.xml vendor advisory
http://lists.opensuse.org/opensuse-updates/2013-06/msg00049.html vendor advisory
http://www.openwall.com/lists/oss-security/2013/04/18/8 mailing list
http://www.debian.org/security/2012/dsa-2662 vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104537.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2013-1917?
CVE-2013-1917 has been scored as a low severity vulnerability.
How to fix CVE-2013-1917?
To fix CVE-2013-1917, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-1917 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2013-1917 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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