SB2012120309 - Input validation error in xen (Alpine package)
Published: December 3, 2012
Security Bulletin ID
SB2012120309
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) Input validation error (CVE-ID: CVE-2012-5513)
The vulnerability allows a local non-authenticated attacker to execute arbitrary code.
The XENMEM_exchange handler in Xen 4.2 and earlier does not properly check the memory address, which allows local PV guest OS administrators to cause a denial of service (crash) or possibly gain privileges via unspecified vectors that overwrite memory in the hypervisor reserved range.
Remediation
Install update from vendor's website.