SB2011112104 - Link following in xorg-server (Alpine package)
Published: November 21, 2011
Security Bulletin ID
SB2011112104
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) Link following (CVE-ID: CVE-2011-4028)
The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.
The LockServer function in os/utils.c in X.Org xserver before 1.11.2 allows local users to determine the existence of arbitrary files via a symlink attack on a temporary lock file, which is handled differently if the file exists.
Remediation
Install update from vendor's website.