Featured Articles

Nvidia Shield 2 shows up in AnTuTu

Nvidia Shield 2 shows up in AnTuTu

Nvidia’s original Shield console launched last summer to mixed reviews. It went on sale in the US and so far Nvidia…

More...
AMD CSO John Byrne talks ARM

AMD CSO John Byrne talks ARM

We had a chance to talk about AMD’s upcoming products with John Byrne, Chief Sales Officer, AMD. We covered a number…

More...
AMD Chief Sales Officer thinks GPU leadership is critical

AMD Chief Sales Officer thinks GPU leadership is critical

We had a chance to talk to John Byrne who spent the last two years as Senior Vice President and Chief…

More...
OpenPlus One $299 5.5-inch Full HD phone

OpenPlus One $299 5.5-inch Full HD phone

OnePlus is one of the few small companies that might disrupt the Android phone market, dominated by giant outfits like Samsung.…

More...
KFA2 GTX 780 Ti Hall Of Fame reviewed

KFA2 GTX 780 Ti Hall Of Fame reviewed

KFA2 gained a lot of overclocking experience with the GTX 780 Hall of Fame (HOF), which we had a chance to…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Friday, 15 June 2012 12:02

US Cert warns about 64-bit attacks

Written by Nick Farrell

y wafer

Problems with Intel CPUs

A flaw in some 64-bit operating systems and virtualization software programs are vulnerable to local privilege escalation attacks.

The problem only happens when running on Intel processors, the US Computer Emergency Readiness Team (US-CERT) announced today. The hole, dubbed CVE-2012-0217, stems from the way Intel CPUs have implemented the SYSRET instruction in their x86-64 extension, known as Intel 64.

Crackers could exploit the vulnerability to force Intel CPUs to return a general protection fault in privileged mode. This would give them power to execute code with kernel privileges from a least-privileged account, or to escape from a virtual machine and gain control of the host operating system.

The vulnerability can only be exploited on Intel CPUs when the Intel 64 extension is in use. Some of the operating systems confirmed as vulnerable so far include x64-based versions of Windows 7 and Windows Server 2008 R2, the 64-bit versions of FreeBSD and NetBSD, the Xen virtualisation software, as well as Red Hat Enterprise Linux and SUSE Linux Enterprise Server.


blog comments powered by Disqus

To be able to post comments please log-in with Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments