Mozilla Corp. has released a software update that repairs a number of bugs in its open source Firefox browser.

Firefox 1.5.0.2 introduces native support for OS X users, and “addresses several bugs”, as well as security vulnerabilities.

The update “patches” seven security holes, five of which were rated "Critical" by Mozilla, which could lead to a privilege escalation when users view a page under the "print preview" option or by bypassing a Java Script security check. In two other cases, Javascript could be used to run arbitrary code on a system without the user's knowledge, or such code could be executed through a buffer overflow attack.

Windows users will no longer experience an application crash when trying to print pages. The new version allows Apple users to once again use the scroll wheel when they visit a page containing Java applets. The application also supports several keyboard shortcuts, which stopped working after the release of Firefox 1.5.

Current Firefox users will receive an automatic update notification, or they can manually apply the patch through the "check for updates" function. Users running OS X on Mac systems have to manually download the new Firefox version.