USB stick-sploit makes anyone a Windows admin

Powered by SC Magazine
 

Windows 7 affected.

Researchers have detailed a current vulnerability in Windows 7 that allows school kids, university students and other local users to side-step security controls and gain administrator access.

The low-severity NULL pointer dereference bug focused on the "rather complex and still largely unexplored" NTFS file system which was exploited via a crafted USB volume.

Gynvael Coldwind found the vulnerability while Mateusz "j00ru" Jurczyk wrote the exploit.

Together, they said it served as an interesting case study of Windows kernel exploitation using novel techniques to achieve reliable code execution with escalated privileges.

"Windows actively uses so many interesting system structures (in)directly controlled from user-mode that there is always one that fits properly, even for very complicated types of memory corruption conditions," the researchers wrote.

"...The only scenario in which it might be a problem security-wise is a local computer shared between multiple users with restricted privileges and thus has been rated as low-severity by both us and MSRC (Microsoft Security Response Center)."

They said the exploit might work on earlier Windows operating systems but did not reproduce on Windows 8.

Microsoft was reportedly investigating a potential fix for stability purposes.

Technical details on the bug and exploit were available on both Coldwind's and Jurczyk's blogs.

Copyright © SC Magazine, Australia


USB stick-sploit makes anyone a Windows admin
 
 
 
Top Stories
Content, cost & constant innovation: How Foxtel plans to take on Netflix
Nell Payne inhabits the “brave new world of blue strings and networking”. Just don't ask her to put a TV screen on your microwave.
 
Sending in the drones
Margins are getting tighter in the industrial services industry, so Transfield Services' Stephen Phillips looks offshore - and to the skies - for the solutions he needs to keep pace.
 
Westpac fires starting pistol on core banking upgrade
St George readies itself for move to Celeriti.
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest articles on BIT Latest Articles from BIT
Microsoft launches Office for Android preview
May 22, 2015
Microsoft has launched a preview of Office for Android smartphones. Pre-release versions of ...
Microsoft is working on an iOS email chat feature called Flow
May 22, 2015
Microsoft is working on a new chat app, but at the moment we know more about what we DON'T know, ...
Windows 10 free upgrade: Microsoft details who gets what
May 22, 2015
Microsoft was meant to be streamlining its OS with Windows 10, so why is upgrading so confusing? ...
Windows 10 has an edition to suit everyone's needs
May 15, 2015
Microsoft unveils a mind-melting six editions of Windows 10 ahead of its Winter 2015 launch. ...
Firefox 38 FINAL released, debuts new tab-based preferences
May 13, 2015
Mozilla has unveiled the latest version of Firefox 38.0 FINAL for desktop, with Firefox for ...
Latest Comments
Polls
Should Optus make a bid for iiNet?

   |   View results
Yes
  43%
 
No
  57%
TOTAL VOTES: 537

Vote