Firefox patches zero-day, hacking contest bugs

The update fixes a bug used to win the Pwn2Own hacking contest

Just days after a hacker released code that could be used to attack the Firefox browser, Mozilla developers have a fix.

They released an updated 3.0.8 version of their flagship browser Friday afternoon, just two days after the code was posted to the Milw0rm Web site.

This update also fixes a bug disclosed to research firm TippingPoint last week by a hacker who used it to win the company's Pwn2Own contest at the CanSecWest security conference.

It was one of three used by a German hacker, who gave only his first name, Nils, to claim US$15,000 in cash and a laptop as prizes.

Mozilla developers had described the release as a "high-priority firedrill security update" thanks to the attack code, known as a "zero day" exploit.

The quick work paid off, as they had expected it to take until early next week to complete testing.

Mozilla says both bugs are "critical".

Nils' flaw exploited a bug in a Firefox routine known as method _moveToEdgeShift. He used it to hack the browser running on Mac OS X, but it could affect other platforms as well.

The other flaw, which has to do with the way the browser processes XSL stylesheets, affects Firefox on all operating systems, and also affects the Seamonkey Internet application.

Both of these bugs could be triggered by tricking a victim into viewing a maliciously coded Web page, which would then allow an attacker to install unauthorized software on a victim's system.

This kind of Web-based malware, called a drive-by download, has become increasingly popular in recent years.

Firefox's next update, 3.0.9, is set to be released April 21.

Join the Good Gear Guide newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection

Tags Firefoxbugsxslmozilla firefoxzero day exploitmalware

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Robert McMillan

IDG News Service
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Matthew Stivala

HP OfficeJet 250 Mobile Printer

The HP OfficeJet 250 Mobile Printer is a great device that fits perfectly into my fast paced and mobile lifestyle. My first impression of the printer itself was how incredibly compact and sleek the device was.

Armand Abogado

HP OfficeJet 250 Mobile Printer

Wireless printing from my iPhone was also a handy feature, the whole experience was quick and seamless with no setup requirements - accessed through the default iOS printing menu options.

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Ed Dawson

HP OfficeJet Pro 8730

As a freelance writer who is always on the go, I like my technology to be both efficient and effective so I can do my job well. The HP OfficeJet Pro 8730 Inkjet Printer ticks all the boxes in terms of form factor, performance and user interface.

Michael Hargreaves

Windows 10 for Business / Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?