SB2011122212 - Permissions, Privileges, and Access Controls in xorg-server (Alpine package)
Published: December 22, 2011
Security Bulletin ID
SB2011122212
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2011-4613)
The vulnerability allows a local non-authenticated attacker to read and manipulate data.
The X.Org X wrapper (xserver-wrapper.c) in Debian GNU/Linux and Ubuntu Linux does not properly verify the TTY of a user who is starting X, which allows local users to bypass intended access restrictions by associating stdin with a file that is misinterpreted as the console TTY.
Remediation
Install update from vendor's website.