CVE-2006-6730 Privilege escalation in n/a
Local root users can bypass securelevel and execute arbitrary code in System Management Mode by writing to the video card memory-mapped I/O range.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2006-6730?
CVE-2006-6730 is a medium-severity vulnerability in Netbsd Netbsd, published on 26 Dec 2006. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2006-6730?
It affects 2 products.
Products include Netbsd Netbsd, Openbsd Openbsd.
How do I fix CVE-2006-6730?
No fix has been published for CVE-2006-6730 yet. Limit exposure of the affected software until one is available.
Is CVE-2006-6730 being exploited?
There is no known exploitation of CVE-2006-6730 in the wild and no public exploit code.
Other vulnerabilities in Netbsd Netbsd
Sources
Also known as GHSA-83jc-959v-qgmc.