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Category:   Application (Generic)  >   X Vendors:   X.org
X11 Overflows Let Local Users Gain Root Privileges
SecurityTracker Alert ID:  1017857
SecurityTracker URL:  http://securitytracker.com/id/1017857
CVE Reference:   CVE-2007-1003, CVE-2007-1351, CVE-2007-1352   (Links to External Site)
Date:  Apr 3 2007
Impact:   Execution of arbitrary code via local system, Root access via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.2 and prior versions
Description:   Several vulnerabilities were reported in X. A local user can obtain elevated privileges on the target system.

A local user can trigger an integer overflow in the processing of BDF fonts to execute arbitrary code on the target system with root privileges [CVE-2007-1351].

A local user can trigger an integer overflow in 'fonts.dir' to execute arbitrary code on the target system with root privileges [CVE-2007-1352].

A local user can trigger an integer overflow in the XC-MISC extension to execute arbitrary code on the target system with root privileges [CVE-2007-1003].

Sean Larsson of iDefense Labs discovered the XC-MISC extension vulnerability. iDefense reported the other two vulnerabilities.

Impact:   A local user can obtain root privileges on the target system.
Solution:   The vendor has issued a patch for 7.2.

[Editor's note: The vendor's patch and security advisory were not available at the time of this entry.]

Vendor URL:  wiki.x.org/wiki/Development/Security?action=show&redirect=SecurityPage (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Apr 3 2007 (Red Hat Issues Fix) X11 Overflows Let Local Users Gain Root Privileges
Red Hat has released a fix for Red Hat Enterprise Linux 4.
Apr 3 2007 (Red Hat Issues Fix) X11 Overflows Let Local Users Gain Root Privileges
Red Hat has released a fix for CVE-2007-1003 on Red Hat Enterprise Linux 5.
Apr 3 2007 (Red Hat Issues Fix for libXfont ) X11 Overflows Let Local Users Gain Root Privileges
Red Hat has released a fix for libXfont on Red Hat Enterprise Linux 5.
Apr 4 2007 (Red Hat Issues Fix for XFree86) X11 Overflows Let Local Users Gain Root Privileges
Red Hat has released a fix for XFree86 on Red Hat Enterprise Linux 2.1 and 3.
Apr 5 2007 (OpenBSD Issues Fix) X11 Overflows Let Local Users Gain Root Privileges
OpenBSD has issued a fix for OpenBSD 3.9 and 4.0.
Apr 16 2007 (Red Hat Issues Fix for FreeType) X11 Overflows Let Local Users Gain Root Privileges
Red Hat has released a fix for FreeType on Red Hat Enterprise Linux 3, 4, and 5.
Apr 26 2007 (Sun Issues Fix) X11 Overflows Let Local Users Gain Root Privileges
Sun has issued a fix for Solaris 8 and 9. A fix for Solaris 10 is pending.



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