Public Date:
988498: CVE-2013-4169 gdm: TOCTTOU race condition on /tmp/.X11-unix

The MITRE CVE dictionary describes this issue as:

GNOME Display Manager (gdm) before 2.21.1 allows local users to change permissions of arbitrary directories via a symlink attack on /tmp/.X11-unix/.

Find out more about CVE-2013-4169 from the MITRE CVE dictionary dictionary and NIST NVD.


This flaw only affected GDM in Red Hat Enterprise Linux 5 and does not affect Red Hat Enterprise Linux 6.

CVSS v2 metrics

Base Score 6.2
Base Metrics AV:L/AC:H/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity High
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 5 RHSA-2013:1213 2013-09-05

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 6 gdm Not affected


Red Hat would like to thank the researcher with the nickname vladz for reporting this issue.
Last Modified

CVE description copyright © 2017, The MITRE Corporation