Mozilla has released Firefox 1.0.5 and plans to follow it with new versions of its Thunderbird e-mail client and namesake browser application suite on Wednesday, said Chris Hofmann, Mozillas director of engineering.
The Firefox update fixes 11 security issues discovered both by outside security researchers and from Mozillas own Security Bug Bounty Program, which offers a $500 reward for reporting bugs.
Hofmann said that Mozilla knows of no exploits of the security vulnerabilities patched in Firefox 1.0.5.
Among the vulnerabilities plugged in Firefox 1.0.5 is a browser spoofing issue reported last month by security researcher Secunia. The spoofing vulnerability, which affected all major browsers, could aid scammers in successfully launching phishing attacks.
Also last month, a 7-year-old frame-injection vulnerability, which had been patched in earlier versions of Mozilla browsers, reared its head again in Firefox.
The new version patches the flaw, which had the potential to allow an attacker to load malicious content in the browser window of a trusted Web site by exploiting the way browsers handle frames.
To install the update, Firefox users need to follow a browser prompt to download the update or visit the Mozilla.org Web site.
Mozilla does not provide a way to deliver security patches to Firefox, instead requiring that users download completely new versions of the browser.
But the Mountain View, Calif.-based open-source development group plans to change that.
It is working on a revamped software updating system for the next major release of Firefox, Version 1.1, which is due for release later this summer.
A second alpha release of Firefox 1.1, called "Deer Park," was slated to be available for testing among developers as soon as Tuesday.
That alpha was supposed to include early test code of the new software updates system, Hofmann said.
Mozilla is working to make the availability of software updates more visible to users and to support security patches in the revamping software-update process.
In other Mozilla news, Yahoo Inc. announced Tuesday that it has added support for the open-source Thunderbird e-mail client to its desktop-search application.
Yahoo Desktop Search now will be able to index and search across e-mails and e-mail attachments from Thunderbird.
When it launched in beta in January, the desktop-search software only supported Microsoft Corp.s Outlook and Outlook Express clients.