SB2017012313 - Permissions, Privileges, and Access Controls in Xen
Published: January 23, 2017 Updated: July 28, 2020
Security Bulletin ID
SB2017012313
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
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-2016-9381)
The vulnerability allows a local privileged user to execute arbitrary code.
Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.
Remediation
Install update from vendor's website.