Mozilla patches 11 Firefox bugs

And Firefox 3.0 Beta 3 is just days away, the developer says

Mozilla late last week patched Firefox to quash 11 bugs, including one from three weeks ago that posed a threat to users who had installed any of the more than 600 add-ons for the open-source browser.

Firefox 2.0.0.12 fixed four vulnerabilities that Mozilla ranked "critical," one it pegged "high" and three each rated as "moderate" and "low," according to the security advisory posted Thursday. The new edition patched more flaws than any update since July 2007. Mozilla last patched Firefox in November.

Although it didn't receive Mozilla's highest threat ranking, the vulnerability in the browser's chrome: URI (Uniform Resource Identifier), disclosed by researcher Gerry Eisenhaur, got the most attention. That bug, which Eisenhaur said could be exploited through a huge number of Firefox's extensions, had been the subject of several blog postings by Window Snyder, Mozilla's chief of security.

She added another Friday. "This security update addresses the directory traversal issue," Snyder said.

The update also patched several critical vulnerabilities that had not been publicly revealed, including one that could allow attackers to steal users' browsing histories -- perhaps to gain information such as account passwords entered in earlier sessions. Other vulnerabilities included one that could be used for cross-site scripting attacks and one that crashed either the browser or the JavaScript engine, or both.

Unlike other vendors, Mozilla labels vulnerabilities as "critical" even when it's not certain that an exploit could result in an attacker introducing malicious code. The description for the browser and JavaScript engine flaw, for example, illustrated Mozilla's conservative approach: "Some of these crashes showed evidence of memory corruption under certain circumstances and we presume that with enough effort at least some of these could be exploited to run arbitrary code," the write-up read.

Also late last week, the company announced that final testing has started on Firefox 3.0 Beta 3, the most recent build of the major upgrade expected to ship in the next two months. If all goes according to plan, Mozilla said, Beta 3 will be released on Tuesday.

Previously, Mozilla had said it would need at least one more beta before moving Firefox 3.0 into the release candidate stage.

Firefox 2.0.0.12 can be downloaded from Mozilla in versions for Windows, Mac OS X and Linux. Forty localized editions, including a beta of the Kurdish Firefox, are available. Current Firefox users should be notified of its availability in the next day or two by the browser's automatic update tool.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Gregg Keizer

Computerworld
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?