CVE-2006-6730

OpenBSD and NetBSD permit usermode code to kill the display server and write to the X.Org /dev/xf86 device, which allows local users with root privileges to reduce securelevel by replacing the System Management Mode (SMM) handler via a write to an SMRAM address within /dev/xf86 (aka the video card memory-mapped I/O range), and then launching the new handler via a System Management Interrupt (SMI), as demonstrated by a write to Programmed I/O port 0xB2.
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:netbsd:netbsd:2.0.4:*:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2006-12-26 23:28

Updated : 2024-02-28 11:01


NVD link : CVE-2006-6730

Mitre link : CVE-2006-6730

CVE.ORG link : CVE-2006-6730


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Products Affected

openbsd

  • openbsd

netbsd

  • netbsd