NVIDIA Linux Driver Vulnerability Exploits Root Privileges!
According to NVIDIA there is a major vulnerability in their UNIX/Linux driver that every Linux user should be aware of. Especially now, that most of us play Steam games using proprietary drivers, this is quite dangerous and you should pay attention. Thankfully, this vulnerability was identified by NVIDIA, thus there are no known reports of exploits of this vulnerability in the wild.
When the NVIDIA driver for the X Window System is operated in “NoScanout” mode, and an X client installs an ARGB cursor that is larger than the expected size (64×64 or 256×256, depending on the driver version), the driver will overflow a buffer. This can cause a denial of service (e.g., an X server segmentation fault), or could be exploited to achieve arbitrary code execution. Because the X server runs as setuid root in many configurations, an attacker could potentially use this vulnerability in those configurations to gain root privileges. To install an ARGB cursor, an application would require a connection to a running X server. Normally, X servers are configured to only accept authenticated connections from the local host, but some X servers may be configured to more permissively allow connections, and/or to allow connections over a network.
“NoScanout” mode is enabled implicitly on NVIDIA products which lack display output connectors, and can be enabled explicitly on some other configurations with the X configuration option:
Option “UseDisplayDevice” “none”
NVIDIA GPU drivers for OSes other than Linux, FreeBSD, VMware ESX, and Solaris are not affected.
This vulnerability has been present since NVIDIA driver version 195.22. The overflow is fixed in 304.88, 310.44, 313.30, and all drivers newer than those versions. NVIDIA recommends that users upgrade to a fixed driver version, or disable NoScanout mode, where possible.
Like us on Facebook
We need your assistance to stay live
This week Top Posts
- Top Things To Do After Installing Ubuntu 13.10 'Saucy Salamander' : Ubuntu 13.10 Saucy Salamander will be released on coming October 17th with many new salient featur...0 comments |
- Install Fail2Ban On Ubuntu Server 13.04/13.10 : Introduction Fail2Ban is an intrusion prevention framework written in the Python programming l...0 comments |
- 5 Android Apps that’s Going to Make Running Your Business Less Stressful : Running a business can be very stressful. You have to think about team collaboration, making sure th...0 comments |
- Install Crashplan backup tool in Linux : CashPlan is an automated backup solution that either uses the CrashPlan Central server or any other ...0 comments |
- install Git in Ubuntu : Git is a distributed revision control system with an emphasis on speed. Git was initially designed a...0 comments |
- Install Corosync and Pacemaker On CentOS 6.5 : I will show you in this tutorial how to install your first cluster Corosync and the Linux Cluster Ma...0 comments |
- Install Uget Download Manager In Ubuntu, Fedora, Debian
- Download Elementary OS ‘Luna’ Official Wallpapers
- Install Power Commands 0.1.5 On Ubuntu 14.04/13.10/12.10/12.04
- 5 Android Apps that’s Going to Make Running Your Business Less Stressful
- Puppet agent Install Using Script
- Install Corosync and Pacemaker On CentOS 6.5
- Install Fail2Ban On Ubuntu Server 13.04/13.10
- How To Install Google Chrome in Fedora 20, 19, 18
- How to surf using Tor Browser Bundle
- New Games got Greenlit on Linux by Steam Today!
This work by unixmen.com is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
Copyright © 2008-2013 Unixmen.com .