Tor Browser 8.5.2 Released With Fixes for Critical Zero-day

Tor Browser 8.5.2 released with a fix for critical security updates in that allows an attacker to run malicious code on the vulnerable machine without user interaction.

Also, we update NoScript to 10.6.3, fixing a few issues. Tor Users with the safer and safest security levels were not affected by this security issue, reads the blog post.

This critical zero-day vulnerability initially reported to Mozilla by Samuel Groß, a member of Google Project Zero and Coinbase Security.

Attackers actively targeted the discovered JavaScript type confusion vulnerability that leads to an exploitable crash. Users are urged to update the new version immediately to protect themselves from this zero-day exploit.

The bug doesn’t affect the Tor users who were running under safer and safest security levels. Unfortunately, the release is not available for Android version as the development team unable to access the Android signing token.

Android users are recommended using Tor with safer or safest security levels. You can change the security level under Security Settings.

Changelog Tor Browser 8.5.2

Pick up a fix for Mozilla’s bug 1544386
Update NoScript to 10.6.3
- Bug 29904: NoScript blocks MP4 on higher security levels
- Bug 30624+29043+29647: Prevent XSS protection from freezing the browser

Tor Browser 8.5.1 released for Windows, Linux and Mac and Android earlier this month. It is the first bug fix release in the 8.5 series.

You can Download Tor Browser 8.5.2 from Here Tor Browser and distribution directory. The Android version is available from Google Play

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