PT-2013-4958 · Citrix+1 · Xen+1

George Dunlap · Published 2013-09-12 · Updated 2017-01-07 · CVE-2013-4329

Positive Technologies (AI Summary)

CVSS v2.0

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Xen versions 4.0.x through 4.2.x

Description The issue allows local HVM guest domains to gain privileges or cause a denial of service via a DMA instruction when IOMMU is disabled. This occurs because the xenlight library provides access to a busmastering-capable PCI passthrough device before the IOMMU setup is complete.

Recommendations For Xen versions 4.0.x through 4.2.x, consider disabling the PCI passthrough device until a patch is available to complete the IOMMU setup before providing access to the device. As a temporary workaround, enable IOMMU to prevent unauthorized access to the PCI passthrough device.

Fix

DoS

Weakness Enumeration

CWE-264

Related Identifiers

CVE-2013-4329

DSA-3006-1

Affected Products

Suse

Xen

References · 9

• http://security.gentoo.org/glsa/glsa-201407-03.xml · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2013-4329 · Security Note
• https://osv.dev/vulnerability/CVE-2013-4329 · Vendor Advisory
• http://lists.xen.org/archives/html/xen-devel/2013-07/msg00066.html · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2013-4329 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2013-4329 · Vendor Advisory
• http://debian.org/security/2014/dsa-3006 · Vendor Advisory
• http://openwall.com/lists/oss-security/2013/09/10/4 · Note