CVE-2006-6730
6.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:S/C:C/I:C/A:C
6.9 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
9.7%
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 configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| netbsd:netbsd | netbsd | eq | 2.0.4 |
| openbsd:openbsd | openbsd | eq | * |
References
lists.freedesktop.org/archives/xorg/2004-June/000927.html
www.cansecwest.com/slides06/csw06-duflot.ppt
www.securityfocus.com/archive/1/454379/100/0/threaded
www.securityfocus.com/archive/1/454510/100/0/threaded
www.securityfocus.com/archive/1/454706/100/0/threaded
www.ssi.gouv.fr/fr/sciences/fichiers/lti/cansecwest2006-duflot-paper.pdf
6.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:S/C:C/I:C/A:C
6.9 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
9.7%