Mozilla yanks Firefox 16 one day after release
Critical vulnerability overlooked or introduced by previous patching; fix due Thursday
Computerworld - Mozilla yesterday took the unusual step of yanking Firefox 16 from distribution just a day after its release.
The company said a critical vulnerability triggered the move.
The bug was apparently overlooked by Mozilla while it was developing Firefox 16, or introduced by the fixes baked into the upgrade that started reaching users early Tuesday.
"Mozilla is aware of a security vulnerability in the current release version of Firefox (version 16). Firefox version 15 is unaffected," said Michael Coates, Mozilla's director of security assurance, in a Wednesday post to the company's security blog.
On Tuesday, Mozilla rolled out Firefox 16, which featured patches for 24 vulnerabilities, 21 of which were judged "critical," the open-source developer's highest threat ranking.
Coates' comment that Firefox 15 did not harbor the bug indicated that the vulnerability was either an entirely new, and overlooked, flaw that affected only Firefox 16, or that it was introduced by the patching process.
The vulnerability has been assigned #799952 in Mozilla's Bugzilla change- and bug-tracking database. As is Mozilla's practice for unpatched flaws, details on that bug are not viewable by the general public. That Bugzilla number did not match any of the 24 vulnerabilities patched Tuesday.
Coates did not note when Mozilla became aware of the new vulnerability, or how it was discovered. Notes from a Mozilla meeting yesterday, however, show the company was aware of it by 11 a.m. PT Wednesday, when it told developers that a "chemspill" -- Mozilla's term for an emergency update -- was necessary.
As a precaution, Mozilla has pulled Firefox 16 from its primary download site and stopped serving it to current users as an upgrade, even though there was no sign that the bug was being exploited.
Users who do not want to wait for the patch but are afraid of running their already-obtained copies of Firefox 16 can downgrade to its precursor, Coates said.
Firefox will be re-released as version 16.0.1 some time Thursday, after which Mozilla will re-open the upgrade gates.
Mozilla has had to quickly re-release Firefox before. In December 2011 it did just that with Firefox 9 a day after that browser's release.
However, this was the first time Mozilla has pulled a version of Firefox from distribution because of a vulnerability.
Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer, or subscribe to Gregg's RSS feed . His e-mail address is firstname.lastname@example.org.
- Researcher claims two hacker gangs exploiting unpatched IE bug
- Update: Third of Internet Explorer users at risk from attacks
- Microsoft plans another short patch slate for next week, but finds a few XP bugs to crush
- Target attack shows danger of remotely accessible HVAC systems
- Target hackers try new ways to use stolen card data
- Update: Microsoft to patch just-revealed Windows zero-day tomorrow
- NSA spying prompts open TrueCrypt encryption software audit to go viral
- Microsoft warns of Office zero-day, active hacker exploits
- Hackers move to create next Blackhole after 'Paunch' arrest
- Adobe hack shows subscription software vendors lucrative targets
Read more about Security in Computerworld's Security Topic Center.
- Radicati: Cloud Business Email - Market Quadrant 2013 Google was named the top cloud business email provider in a recent report by research firm Radicati. Out of 14 key players, Google...
- Tablets in the Enterprise: A Checklist for Successful Deployment How can you enterprise manage and secure tablets in order to protect corporate data while providing access to the information and applications employees...
- Enterprise Mobility: A Checklist for Secure Containerization The advantages and disadvantages of the multiple approaches to containerization. Learn More>>
- Enterprise File Sync & Share Checklist File sync and share has changed the way people work and collaborate in today's tech-savvy world. Gone are the email roadblocks, clunky FTP...
- Live Webcast LIVE EVENT: 5/7, The End of Data Protection As We Know It. Introducing a Next Generation Data Protection Architecture. Traditional backup is going away, but where does this leave end-users?
- LIVE EVENT: 5/7, The End of Data Protection As We Know It. Introducing a Next Generation Data Protection Architecture. Traditional backup is going away, but where does this leave end-users?
- On-demand webinar: "Mobility Mayhem: Balancing BYOD with Enterprise Security" Check out this on-demand webinar to hear Sophos senior security expert John Shier deep dive into how BYOD impacts your enterprise security strategy... All Security White Papers | Webcasts