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Category:   OS (UNIX)  >   OpenBSD Kernel Vendors:   OpenBSD
OpenBSD Kernel Input Validation Flaw in vga() Lets Local Users Gain Root Privileges
SecurityTracker Alert ID:  1017468
SecurityTracker URL:  http://securitytracker.com/id/1017468
CVE Reference:   CVE-2007-0085   (Links to External Site)
Updated:  May 20 2008
Original Entry Date:  Jan 4 2007
Impact:   Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.9, 4.0
Description:   A vulnerability was reported in OpenBSD Kernel. A local user can obtain root privileges on the target system.

If the kernel is compiled with the PCIAGP option but the actual device is not an AGP device, then a local user can exploit an input validation flaw in vga(4) to obtain root privileges.

Only i386-based systems are affected.

Ilja van Sprundel discovered this vulnerability.

Impact:   A local user can obtain root privileges on the target system.
Solution:   OpenBSD has issued a fix, available at:

ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.0/i386/007_agp.patch
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.9/i386/017_agp.patch

Vendor URL:  www.openbsd.org/ (Links to External Site)
Cause:   Access control error

Message History:   None.


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