NVIDIA privilege escalation flaw disclosed

Powered by SC Magazine
 

Red Hat engineer says vendor ignored bug report.

An alleged security vulnerability has been discovered in the NVIDIA binary that leads to privilege escalation.

The flaw was posted to a Full Disclosure mailing list by Brisbane-based Red Hat software engineer Dave Airlie.

It was first discovered by an anonymous researcher and handed to Airlie for reporting to NVIDIA.

Airlie said he reported the flaw to the graphics company in June and had posted it to the public mailing list after receiving no response from the vendor.

“I was given this anonymously, it has been sent to NVIDIA over a month ago with no reply or advisory,” Airlie wrote.

He said the flaw reported by ZDNet US allows attackers to write to memory.

“It basically abuses the fact that the /dev/nvidia0 device accept(s) changes to the VGA window and moves the window around until it can read/write to somewhere useful in physical RAM," he said.

It then achieves privilege escalation by writing directly to kernel memory, he said.

Users can follow a workaround mitigation process to secure the flaw.

NVIDIA has been contacted for comment.

Copyright © SC Magazine, Australia


NVIDIA privilege escalation flaw disclosed
 
 
 
Top Stories
NICTA no more as CSIRO takes over
Data61 split out under executive.
 
Inside the stalemate on Australia's piracy code
Still not registered almost five months on.
 
IT staff outline deep anger in Macquarie Uni survey
‘Morale at lowest point in a decade’.
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest Comments
Polls
New Windows 10 users, are you upgrading from...




   |   View results
Windows 8
  46%
 
Windows 7
  45%
 
Windows XP
  4%
 
Another operating system
  3%
 
Windows Vista
  2%
TOTAL VOTES: 745

Vote