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Firefox 3.6.2 Released

Mozilla has accelerated its timetable and released Firefox 3.6.2 ahead of schedule. This release contains a number of security fixes, including a fix to Secunia Advisory SA38608 which was previously discussed on this blog when we were first made aware of and were then able to confirm the issue. For additional information please see Mozilla [...]

Secunia Advisory SA38608

Mozilla is aware of the claim of a zero-day in Firefox as posted here: http://secunia.com/advisories/38608/.  We cannot confirm the report as we have received no details regarding the reported vulnerability, such as a proof-of-concept or steps to reproduce.  We’ve attempted to contact the researcher who discovered the issue but have not received a response. Mozilla [...]

Security Issues With Two Experimental Add-Ons

Important Note: One of the malware results has been verified to be a false positive.  Further details are available here: http://blog.mozilla.com/addons/2010/02/09/update-on-the-amo-security-issue/ Original blog entry follows below. Two add-ons in the experimental section of addons.mozilla.org were found to be containing malware.  These were not originally detected with the anti-malware scanning tools that we have been using.  [...]

.NET Framework Assistant & Windows Presentation Foundation Plugin Blocking Update

Mike Shaver has posted an update on the situation surrounding our blocking of the .Net Framework Assistant and WPF plugin. In it, he discusses the current state of affairs, the series of events that got us to this point, as well as the steps we, and Microsoft, are taking to get the situation resolved.

.NET Framework Assistant Blocked to Disarm Security Vulnerability

Mike Shaver, Mozilla’s Vice President of Engineering writes: I’ve previously posted about the .NET Framework Assistant add-on that was delivered via Windows Update earlier this year. It’s recently surfaced that it has a serious security vulnerability, and Microsoft is recommending that all users disable the add-on. Because of the difficulties some users have had entirely [...]

Mozilla Plugin Check Now Live

A little over a month ago, I talked about a project we had started to inform users when their plugins were out of date. This is a really important project for us, because old versions of plugins can cause crashes and other stability problems, and can also be a major security risk. In the first [...]

A Glimpse Into the Future of Browser Security

As we mentioned earlier we’ve been working for the past few months on turning the Content Security Policy specification into working Firefox code. (You’ll remember that CSP is a framework to protect websites from XSS and related attacks). We are happy to report that the work is nearly finished, and we have some preview builds [...]

Plugin Updating Project: Follow up

I wrote last week about a new project we’ve started, informing our users when they’re running out of date versions of popular plugins. We focused our initial efforts on the Adobe Flash Player and now, a week after launch, Mozilla’s Numerator, Ken Kovash, has a blog post up looking at the results. Those results have [...]

Helping users keep plugins updated

Starting with the upcoming releases of Firefox 3.5.3 and Firefox 3.0.14, Mozilla will warn users if their version of the popular Adobe Flash Player plugin is out of date. Old versions of plugins can cause crashes and other stability problems, and can also be a significant security risk. For now our focus is on the [...]

URL bar spoofing vulnerability

Issue The URL in the address bar can be spoofed when a new window or tab is opened by a malicious web page. Impact to users If a user visits a page hosting this malicious code, a new window or tab can be opened with a faked URL.  There is no way of determining if [...]