Permissions, Privileges, and Access Controls in Xen - CVE-2013-4329

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Main Vulnerability Database Vulnerabilities #VU32604

Permissions, Privileges, and Access Controls in Xen - CVE-2013-4329

Published: September 12, 2013 / Updated: July 28, 2020


Vulnerability identifier: #VU32604
CSH Severity: Medium
CVSS v4: 7.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-4329
CWE-ID: CWE-264
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote #AU# to execute arbitrary code.

The xenlight library (libxl) in Xen 4.0.x through 4.2.x, when IOMMU is disabled, provides access to a busmastering-capable PCI passthrough device before the IOMMU setup is complete, which allows local HVM guest domains to gain privileges or cause a denial of service via a DMA instruction.


Affected software

Xen
xen (Alpine package)

How to mitigate CVE-2013-4329

Install update from vendor's website.

xen (Alpine package) - update to 4.1.4-r7

External References

Related Security Bulletins