SB2012121024 - Input validation error in xen (Alpine package)
Published: December 10, 2012
Security Bulletin ID
SB2012121024
Severity
Low
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-2012-4536)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The (1) domain_pirq_to_emuirq and (2) physdev_unmap_pirq functions in Xen 2.2 allows local guest OS administrators to cause a denial of service (Xen crash) via a crafted pirq value that triggers an out-of-bounds read.
Remediation
Install update from vendor's website.