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X.Org X11 "DBE" and "Render" Extensions Vulnerabilities
Secunia Advisory: SA23670
Release Date: 2007-01-10
Popularity: 13,261 views

Critical:
Less critical
Impact: Privilege escalation
Where: Local system
Solution Status: Vendor Patch

Software:X Window System 11 (X11) 6.x
X Window System 11 (X11) 7.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

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.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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