SB2012120307 - Input validation error in xen (Alpine package)
Published: December 3, 2012
Security Bulletin ID
SB2012120307
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2012-5510)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Xen 4.x, when downgrading the grant table version, does not properly remove the status page from the tracking list when freeing the page, which allows local guest OS administrators to cause a denial of service (hypervisor crash) via unspecified vectors.
Remediation
Install update from vendor's website.