Mozilla patches Firefox security bug

Mozilla has released Firefox 1.5.0.3, patching a known security bug.

Mozilla has released an update to its Firefox browser, fixing a known security flaw in the open-source software.

The bug, reported last week, relates to the way Firefox handles JavaScript code. It could be exploited by attackers to crash an unpatched browser, and, in theory, could also provide them with a way to trick the browser into running malicious code, Mozilla said in a security alert.

The problem has to do with an error caused when Firefox handles certain unexpected "contentWindow.focus()" JavaScript code. It can be circumvented by disabling Firefox's JavaScript handling capability.

Users of the older Firefox 1.0 browsers and the Mozilla Suite 1.7 are not affected by the flaw, and Firefox 1.5 users should soon start to receive software patches under the browser's automatic update system.

Mozilla developers said last week that they had reduced the number of features in the 1.5.0.3 update in order to speed up the release of this security fix.

Release notes for the 1.5.0.3 browser can be found here: http://www.mozilla.com/firefox/releases/1.5.0.3.html.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
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

Cool Tech

Toys for Boys

Family Friendly

Stocking Stuffer

SmartLens - Clip on Phone Camera Lens Set of 3

Learn more >

Christmas Gift Guide

Click for more ›

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Aysha Strobbe

Microsoft Office 365/HP Spectre x360

Microsoft Office continues to make a student’s life that little bit easier by offering reliable, easy to use, time-saving functionality, while continuing to develop new features that further enhance what is already a formidable collection of applications

Michael Hargreaves

Microsoft Office 365/Dell XPS 15 2-in-1

I’d recommend a Dell XPS 15 2-in-1 and the new Windows 10 to anyone who needs to get serious work done (before you kick back on your couch with your favourite Netflix show.)

Maryellen Rose George

Brother PT-P750W

It’s useful for office tasks as well as pragmatic labelling of equipment and storage – just don’t get too excited and label everything in sight!

Cathy Giles

Brother MFC-L8900CDW

The Brother MFC-L8900CDW is an absolute stand out. I struggle to fault it.

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?