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X.Org X11 "DBE" and "Render" Extensions Vulnerabilities
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Secunia Advisory:
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SA23670
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Release Date:
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2007-01-10
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Popularity:
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10,640 views
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Critical:
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Less critical
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Impact:
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Privilege escalation
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Where:
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Local system
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Solution Status:
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Vendor Patch
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| Software: | X Window System 11 (X11) 6.x
X Window System 11 (X11) 7.x
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| CVE reference: | CVE-2006-6101
CVE-2006-6102
CVE-2006-6103
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Description:
Sean Larsson has reported some vulnerabilities in X.Org X11, which can be exploited by malicious, local users to gain escalated privileges.
The vulnerabilities are caused due to input validation errors within the "ProcRenderAddGlyphs()" function of the "Render" extension, and the "ProcDbeGetVisualInfo()" and "ProcDbeSwapBuffers()" functions of the "DBE" extension. This can be exploited to cause memory corruption by sending specially crafted X requests to the X server.
Successful exploitation may allow the execution of arbitrary code with the privileges of the X server, but requires that the "Render" or "DBE" extensions are loaded.
The vulnerabilities are reported in version 7.1-1.1.0. Other versions may also be affected.
Solution:
Update to version 7.2 RC3.
Provided and/or discovered by:
Sean Larsson, iDefense Labs
Original Advisory:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=463
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=464
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=465
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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