SB2013110103 - Information disclosure in xen (Alpine package)
Published: November 1, 2013
Security Bulletin ID
SB2013110103
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2013-4361)
The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.
The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction.
Remediation
Install update from vendor's website.