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
How hard do you hack back?
[Blog post] Taking the offensive could have unintended consequences.
 
Five zero-cost ways to improve MySQL performance
How to easily boost MySQL throughput by up to 5x.
 
The big winners from Defence’s back-office IT refresh
Updated: The full list of subcontractors.
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest Comments
Polls
Which is the most prevalent cyber attack method your organisation faces?




   |   View results
Phishing and social engineering
  68%
 
Advanced persistent threats
  3%
 
Unpatched or unsupported software vulnerabilities
  11%
 
Denial of service attacks
  6%
 
Insider threats
  12%
TOTAL VOTES: 1024

Vote