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Category:   Application (Generic)  >   X Vendors:   X.org
X.Org X Server XkbSetGeometry Request Handling Error Lets Remote Users Obtain Potentially Sensitive Information
SecurityTracker Alert ID:  1031727
SecurityTracker URL:  http://securitytracker.com/id/1031727
CVE Reference:   CVE-2015-0255   (Links to External Site)
Date:  Feb 11 2015
Impact:   Denial of service via network, Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to versions 1.16.4, 1.17.1
Description:   A vulnerability was reported in X. A remote user can cause denial of service conditions. A remote user can determine the installation path.

A remote X client can send specially crafted data to the target X server to cause the X server to return portions of system memory via an XkbGetGeometry request.

This flaw can also be exploited to cause the target X server to crash.

Olivier Fourdan from Red Hat reported this vulnerability.

Impact:   A remote user can cause denial of service conditions.

A remote user can obtain potentially sensitive information.

Solution:   The vendor has issued a fix (1.16.4, 1.17.1).

The vendor's advisory is available at:

http://www.x.org/wiki/Development/Security/Advisory-2015-02-10/

Vendor URL:  www.x.org/wiki/Development/Security/Advisory-2015-02-10/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Feb 18 2015 (Ubuntu Issues Fix) X.Org X Server XkbSetGeometry Request Handling Error Lets Remote Users Obtain Potentially Sensitive Information
Ubuntu has issued a fix for Ubuntu 12.04 LTS, 14.04 LTS, and 14.10.
Apr 10 2015 (Red Hat Issues Fix) X.Org X Server XkbSetGeometry Request Handling Error Lets Remote Users Obtain Potentially Sensitive Information
Red Hat has issued a fix for Red Hat Enterprise Linux 6 and 7.



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