SB2013091201 - Permissions, Privileges, and Access Controls in Xen
Published: September 12, 2013 Updated: July 28, 2020
Security Bulletin ID
SB2013091201
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2013-4329)
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.
Remediation
Install update from vendor's website.