CVE Vulnerabilities

CVE-2006-6730

Published: Dec 26, 2006 | Modified: Oct 17, 2018
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
6.6 MEDIUM
AV:L/AC:M/Au:S/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

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.

Affected Software

Name Vendor Start Version End Version
Netbsd Netbsd 2.0.4 2.0.4
Openbsd Openbsd * *

References