Feeds

Linux kernel vuln reloaded

Escalation of privileges

  • alert
  • submit to reddit

Website security in corporate America

Security researchers have discovered a potentially serious security vulnerability within a Linux kernel memory management module.

The vulnerability is not remotely executable but it does allow privilege escalation. A hacker who obtains access to a local PC could be able to root a box.

At fault is a bug with the mremap(2) system sub-process, which was subject to an unrelated (but also significant) security problem a few weeks ago.

At risk this time around are versions of the Linux kernel from 2.2 up to and including 2.2.25; 2.4 up to and including 2.4.24; 2.6 up to and including 2.6.2.

Exploitation of the latest flaw is straightforward, according to Polish white hat hackers iSec, which unearthed both problems. But don't get too alarmed - there's no evidence that the vuln has been used in anger.

Users should patch all vulnerable systems as soon as appropriate vendor patches are released. Debian, for example, put out an update on the same day as iSec's advisory on Saturday (6 March). ®

Related Stories

Linux kernel security vuln fixed
Linux kernel backdoor blocked
Linux worm attempts to take over insecure servers

Protecting users from Firesheep and other Sidejacking attacks with SSL

More from The Register

next story
Hackers pop Brazil newspaper to root home routers
Step One: try default passwords. Step Two: Repeat Step One until success
UK.gov lobs another fistful of change at SME infosec nightmares
Senior Lib Dem in 'trying to be relevant' shocker. It's only taxpayers' money, after all
Critical Adobe Reader and Acrobat patches FINALLY make it out
Eight vulns healed, including XSS and DoS paths
Spies would need SUPER POWERS to tap undersea cables
Why mess with armoured 10kV cables when land-based, and legal, snoop tools are easier?
TOR users become FBI's No.1 hacking target after legal power grab
Be afeared, me hearties, these scoundrels be spying our signals
Blood-crazed Microsoft axes Trustworthy Computing Group
Security be not a dirty word, me Satya. But crevice, bigod...
Snowden, Dotcom, throw bombs into NZ election campaign
Claim of tapped undersea cable refuted by Kiwi PM as Kim claims extradition plot
Freenode IRC users told to change passwords after securo-breach
Miscreants probably got in, you guys know the drill by now
THREE QUARTERS of Android mobes open to web page spy bug
Metasploit module gobbles KitKat SOP slop
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
The next step in data security
With recent increased privacy concerns and computers becoming more powerful, the chance of hackers being able to crack smaller-sized RSA keys increases.