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

Father’s Day Gift Guide

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

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.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?