CVE-2013-6400: Medium severity XEN Xen vulnerability

Published Dec 13, 2013

Updated

Xen 4.2.x and 4.3.x, when using Intel VT-d and a PCI device has been assigned, does not clear the flag that suppresses IOMMU TLB flushes when unspecified errors occur, which causes the TLB entries to not be flushed and allows local guest administrators to cause a denial of service (host crash) or gain privileges via unspecified vectors.

Affected Software

6 affected components

XEN Xen=4.2.0

XEN Xen=4.2.1

XEN Xen=4.2.2

XEN Xen=4.2.3

XEN Xen=4.3.0

XEN Xen=4.3.1

Event History

Dec 13, 2013

CVE Published

via MITRE·05:00 PM

Data Sourced

via MITRE·05:00 PM

Description

Data Sourced

via NVD·06:55 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2013-6400?

CVE-2013-6400 is considered a high severity vulnerability due to its potential to cause denial of service and host crashes.

How do I fix CVE-2013-6400?

To fix CVE-2013-6400, you should upgrade to a version of Xen that includes the necessary patches addressing this vulnerability.

What versions of Xen are affected by CVE-2013-6400?

CVE-2013-6400 affects Xen versions 4.2.0 through 4.2.3 and 4.3.0 through 4.3.1.

What type of vulnerability is CVE-2013-6400?

CVE-2013-6400 is a vulnerability related to improper handling of IOMMU TLB flushes that can lead to denial of service.

Can local guest administrators exploit CVE-2013-6400?

Yes, local guest administrators can exploit CVE-2013-6400 to cause a denial of service on the host.