Firefox 100.0.1 brings better process isolation and bug fixes

Firefox 100.0.1 brings better process isolation and bug fixes

Mozilla has released Firefox 100.0.1 and, apart from several improvements, it also brings better process isolation for greater security under Windows 10.

Download Mozilla Firefox 100.0.1

More Security: Better Process Isolation

With Firefox 100.0.1, Mozilla ships a better process isolation Which prevents content processes from accessing the powerful win32k.sys API, which is a popular target for attacks. This requires Windows 10 with Fall Creators Update (1709) or newer. Users of Windows 10 and earlier versions of Windows 8 will only be able to take advantage of this with a future Firefox update. This protection is not technically possible for users of Windows 7, as Microsoft introduced requirements for it only with Windows 8.

The fact that Mozilla released this fix in a general update and didn’t wait for Firefox 101 isn’t surprising, given that the famous Pwn2Own contest is happening again this week, which seeks to highlight security gaps in browsers. is about, among other things, and Mozilla itself from the so-called win32k lockdown Promises significant security benefits.

Incidentally, macOS users have already received a comparable improvement with Firefox 95. Since then, content processes no longer have access to macOS WindowServer. And since Firefox 99, Linux users have been blocked from accessing the X Window System (X11).

Bug fixes in Firefox 100.0.1

Otherwise, Firefox 100.0.1 also brings various bug fixes for all platforms, including several bug fixes for the Picture-in-Picture (PIP) feature for videos. The subtitles feature for PIP already announced for Firefox 100, which it failed to enable for the final version of Mozilla Firefox 100, is now available by default. As a reminder: On websites that support the WebVTT standard, as well as on the popular video and streaming platforms YouTube, Amazon Prime Video, and Netflix, which instead use their own solutions, Firefox now supports video in picture-in. Can also display subtitles. -Show picture mode.

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For web compatibility reasons, WebSockets over HTTP/2 have been disabled because the implementation in Firefox is buggy and can cause problems. In addition, the so-called consumer agent For some more sites with poor implementation user agent sniffing Temporarily changed to Firefox 99. This affected the German Commerzbank, for example, where it was not possible to log into a bank account simply because the Firefox version number had three digits.

Also fixed a bug that caused untitled bookmarks to stop syncing.

Additionally, HDR video support on macOS introduced with Firefox 100, as well as fixes for several crashes caused by third-party security software.

In addition, the so-called . Various improvements were made for the upcoming roll-out of full cookie protection In the default configuration of Firefox. Introduced in Firefox 86, this privacy improvement is only active when strict tracking protection is enabled.

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