Featured Articles

Snapdragon 400 is Qualcomm’s SoC for watches, wearables

Snapdragon 400 is Qualcomm’s SoC for watches, wearables

We wanted to learn a bit more about Qualcomm's plans for wearables and it turns out that the company believes its…

More...
Qualcomm sampling 20nm Snapdragon 810

Qualcomm sampling 20nm Snapdragon 810

We had a chance to talk to Michelle Leyden-Li, Senior Director of Marketing, QCT at Qualcomm and get an update on…

More...
EVGA GTX 970 SC ACX 2.0 reviewed

EVGA GTX 970 SC ACX 2.0 reviewed

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

More...
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...
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.
Friday, 22 October 2010 12:19

Linux has a serious security flaw

Written by Nick Farell


Deep in the kernel
Insecurity outfit VSR Security has warned that the Linux operating system contains a serious security flaw that can be exploited to gain superuser rights on a target system.

The vulnerability, in the Linux implementation of the Reliable Datagram Sockets (RDS) protocol, affects unpatched versions of the Linux kernel, starting from 2.6.30, where the RDS protocol was first included. VSR Security said that Linux installations are only vulnerable if the CONFIG_RDS kernel configuration option is set, and if there are no restrictions on unprivileged users loading packet family modules, as is the case on most stock distributions.

Kernel functions responsible for copying data between kernel and user space. If they don't verify that a user-provided address resided in the user segment, a local attacker could issue specially crafted socket function calls to write arbritrary values into kernel memory. Once they have done that it is a doddle to escalate privileges to root.

The outfit has been showing off a proof-of-concept exploit to demonstrate the severity of the vulnerability.  The exploit was tested on Ubuntu 10.04 (64-bit) and opened a root shell.  There is a patch available and the problem will be fixed in the next Kernel upgrade.

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