Feeds

Exploit emerges for LZO algo hole

Take one Nyan Cat, add Firefox and hope your Linux distro has been patched

Choosing a cloud hosting partner with confidence

Security Mouse security researcher Don A Bailey has showcased an exploit of the Lempel-Ziv-Oberhumer (LZ0) compression algorithm running in the Mplayer2 media player and says it could leave some Linuxes vulnerable to attack.

The LZO data compression algorithm was created by Markus Oberhumer in 1994 and was discovered to be vulnerable in June.

Bailey's demo of the Mplayer2 plugin shows a vulnerability that can trigger remote code execution (RCE) by way of a Nyan Cat image reel displayed on an updated version of FireFox version 30.

It was revealed the vulnerability could trigger an integer overflow vulnerability that caused a denial of service or buffer overflow resulting in remote code execution under specific conditions.

"This is not a Firefox attack," Bailey said.

"I said [in a blog] I would be releasing an Mplayer2 app, and pointed at gecko-mediaplayer being straight-up vulnerable."

"My concern is that these apps/plugins are installed by default on some distributions of Linux."

He said Linux distributions were surprisingly slow at applying LZO fixes despite it existing for media platforms Libav and FFmpeg.

Firefox itself is vulnerable to RCE but only in very constrained cases using certain browser versions which limited the attack enough that Bailey would not bother releasing his lz4 compressed bookmark boy-in the browser demonstration.

NCC Group security bod Wade Alcorn (@WadeAlcorn) said plugins represent unwelcome risk.

"Plugins have a considerable attack surface and have been a thorn in the side of browser security for some time. The browser plugin model is baked into browser design and won't go away anytime soon," Alcorn said. ®

Internet Security Threat Report 2014

More from The Register

next story
FYI: OS X Yosemite's Spotlight tells Apple EVERYTHING you're looking for
It's on by default – didn't you read the small print?
Russian hackers exploit 'Sandworm' bug 'to spy on NATO, EU PCs'
Fix imminent from Microsoft for Vista, Server 2008, other stuff
Edward who? GCHQ boss dodges Snowden topic during last speech
UK spies would rather 'walk' than do 'mass surveillance'
Microsoft pulls another dodgy patch
Redmond makes a hash of hashing add-on
NOT OK GOOGLE: Android images can conceal code
It's been fixed, but hordes won't have applied the upgrade
'LulzSec leader Aush0k' found to be naughty boy not worthy of jail
15 months home detention leaves egg on feds' faces as they grab for more power
China is ALREADY spying on Apple iCloud users, claims watchdog
Attack harvests users' info at iPhone 6 launch
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.