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>> GNOME Display Manager "gdmchooser" Host Name Handling Format String Vulnerability

Title : GNOME Display Manager "gdmchooser" Host Name Handling Format String Vulnerability
VUPEN ID : VUPEN/ADV-2006-5015
CVE ID : CVE-2006-6105
Rated as : Moderate Risk 
Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2006-12-15


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format  Receive VUPEN Security notifications by SMS 

A vulnerability has been identified in GNOME Display Manager, which could be exploited by local attackers to obtain elevated privileges. This issue is due to a format string error in the "gdm_chooser_browser_add_host()" [gui/gdmchooser.c] function when processing user-supplied host names, which could be exploited by unauthenticated local users to execute arbitrary commands with the privileges of the gdmchooser application (typically "gdm").

Affected Products

GNOME Display Manager (GDM) versions prior to 2.17.4
GNOME Display Manager (GDM) versions prior to 2.14.11
GNOME Display Manager (GDM) versions prior to 2.16.4

Solution

Upgrade to GDM version 2.17.4, 2.14.11, or 2.16.4 :
http://ftp.gnome.org/pub/GNOME/sources/gdm

References

http://www.vupen.com/english/advisories/2006/5015
http://ftp.gnome.org/pub/GNOME/sources/gdm/2.17/gdm-2.17.4.changes
http://ftp.gnome.org/pub/GNOME/sources/gdm/2.14/gdm-2.14.11.changes
http://ftp.gnome.org/pub/GNOME/sources/gdm/2.16/gdm-2.16.4.changes
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=453

Credits

Vulnerability reported by iDefense Labs

ChangeLog

2006-12-15 : Initial release

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