rhsa-2013:1213
Vulnerability from csaf_redhat
Published
2013-09-05 18:52
Modified
2024-11-22 07:03
Summary
Red Hat Security Advisory: gdm security update
Notes
Topic
Updated gdm and initscripts packages that fix one security issue are now
available for Red Hat Enterprise Linux 5.
The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.
Details
The GNOME Display Manager (GDM) provides the graphical login screen, shown
shortly after boot up, log out, and when user-switching.
A race condition was found in the way GDM handled the X server sockets
directory located in the system temporary directory. An unprivileged user
could use this flaw to perform a symbolic link attack, giving them write
access to any file, allowing them to escalate their privileges to root.
(CVE-2013-4169)
Note that this erratum includes an updated initscripts package. To fix
CVE-2013-4169, the vulnerable code was removed from GDM and the initscripts
package was modified to create the affected directory safely during the
system boot process. Therefore, this update will appear on all systems,
however systems without GDM installed are not affected by this flaw.
Red Hat would like to thank the researcher with the nickname vladz for
reporting this issue.
All users should upgrade to these updated packages, which correct this
issue. The system must be rebooted for this update to take effect.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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"title": "gdm: TOCTTOU race condition on /tmp/.X11-unix"
}
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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