(Sun Issues Fix) X11R6 XKEYBOARD Extension Buffer Overflow Lets Local Users Gain Elevated Privileges
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SecurityTracker Alert ID: 1016807 |
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SecurityTracker URL: http://securitytracker.com/id/1016807
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Sep 8 2006
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Impact:
Execution of arbitrary code via local system, User access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): X11R6.4 and prior versions
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Description:
A vulnerability was reported in X11R6. A local user can obtain elevated privileges on the target system.
A string manipulation function of the X11R6 X Window System library contains a buffer overflow. When the XKEYBOARD extension is enabled, a local user can set the _XKB_CHARSET environment variable and the DISPLAY environment variable to a specially crafted value and invoke an application that is dynamically linked to the affected library to execute arbitrary code on the target system. The code will run with the privileges of the application.
Adriano Lima and Filipe Balestra of RISE Security discovered this vulnerability.
The original advisory is available at:
http://www.risesecurity.org/advisory/RISE-2006001.txt
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Impact:
A local user can obtain elevated privileges on the target system.
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Solution:
Sun has issued the following fixes.
SPARC Platform
* Solaris 8 with patch 119067-03 or later
* Solaris 9 with patch 112785-56 or later
* Solaris 10 with patch 119059-16 or later
x86 Platform
* Solaris 8 with patch 119068-03 or later
* Solaris 9 with patch 112786-45 or later
* Solaris 10 with patch 119060-15 or later
The Sun advisory is available at:
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102570-1
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Vendor URL: sunsolve.sun.com/search/document.do?assetkey=1-26-102570-1 (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
UNIX (Solaris - SunOS)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Fri, 8 Sep 2006 01:37:58 -0400
Subject: Buffer Overflow Vulnerability in libX11
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http://sunsolve.sun.com/search/document.do?assetkey=1-26-102570-1
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