Featured Articles

Nvidia GTX 980 reviewed

Nvidia GTX 980 reviewed

Nvidia has released two new graphics cards based on its latest Maxwell GPU architecture. The Geforce GTX 970 and Geforce GTX…

More...
Nvidia adjusts GTX 980 and GTX 970 pricing

Nvidia adjusts GTX 980 and GTX 970 pricing

It appears that Nvidia has been feeling the pulse of the market and took some note from comments regarding the original…

More...
iPhone 6 and 6 Plus reviews are up and they are good

iPhone 6 and 6 Plus reviews are up and they are good

Apple is dancing the same dance year after year. It releases the iPhone and two days before they start shipping it…

More...
Amazon announces three new tablets

Amazon announces three new tablets

Amazon has just released three new tablets starting with the $99 priced 6-inch Kindle Fire HD6. This is a 6-inch tablet…

More...
PowerColor TurboDuo R9 285 reviewed

PowerColor TurboDuo R9 285 reviewed

Today we will take a look at the PowerColor TurboDuo Radeon R9 285. The card is based on AMD’s new…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Thursday, 25 November 2010 19:18

Microsoft faces another security nightmare

Written by Nick Farell

A new zero day bug

Software giant Microsoft is facing a bit of an insecurity crisis after a serious of zero day exploits have hit its successful Windows 7 Operating system.

First there was the Aurora exploit in the first of the year, then there was the Stuxnet case. Yesterday another serious 0-day flaw has been shown on a Chinese bulletin board. According to Security outfit Prevx, the flaw resides in win32k.sys, which is the kernel mode part of the Windows subsystem. It allows even limited user accounts to execute arbitrary code in kernel mode. What appears to be causing it Win32k.sys's NtGdiEnableEUDC API is not rightly validating some inputs.

This creates a stack overflow and overwriting the return address stored on the stack. This means that a malicious attacker can redirect the overwritten return address to his malicious code and execute it. Since it has kernel mode privileges it has practically total control of the system. Windows 7's defences, such as User Account Control and Limited User Account technology are vulnerable. So far it has not been seen in the wild.

But now that it has been published online it is only a matter of time before malware is using it.


Nick Farell

E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments