PT-2013-6032 · Xen+1 · Xen+1

Jan Beulich · Published 2013-12-13 · Updated 2017-01-07 · CVE-2013-6400

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:A/AC:H/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Xen versions 4.2.x through 4.3.x

Description The issue occurs when Xen is used with Intel VT-d and a PCI device has been assigned. It does not clear the flag that suppresses IOMMU TLB flushes when unspecified errors occur, causing the TLB entries to not be flushed. This allows local guest administrators to cause a denial of service (host crash) or gain privileges via unspecified vectors.

Recommendations For versions 4.2.x through 4.3.x, consider disabling the use of Intel VT-d with PCI device assignment until a patch is available to clear the flag that suppresses IOMMU TLB flushes when errors occur.

Fix

DoS

Weakness Enumeration

CWE-264

Related Identifiers

CVE-2013-6400

Affected Products

Suse

Xen

References · 12

• https://osv.dev/vulnerability/DEBIAN-CVE-2013-6400 · Vendor Advisory
• http://security.gentoo.org/glsa/glsa-201407-03.xml · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2013-6400 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2013-6400 · Vendor Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2013-December/125081.html · Vendor Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2013-December/125111.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2013-6400 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html · Vendor Advisory
• http://secunia.com/advisories/55932 · Vendor Advisory
• http://securitytracker.com/id/1029468 · Note
• http://openwall.com/lists/oss-security/2013/12/10/7 · Note
• http://lists.xen.org/archives/html/xen-announce/2013-12/msg00002.html · Note