SB2012120311 - Input validation error in xen (Alpine package)
Published: December 3, 2012
Security Bulletin ID
SB2012120311
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-2012-5515)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The (1) XENMEM_decrease_reservation, (2) XENMEM_populate_physmap, and (3) XENMEM_exchange hypercalls in Xen 4.2 and earlier allow local guest administrators to cause a denial of service (long loop and hang) via a crafted extent_order value.
Remediation
Install update from vendor's website.