Download Firefox 79 – Fixes Three Critical Bugs

Firefox Browser
Firefox Browser

Mozilla Firefox 79 Version released for all platforms including Windows, Linux and Mac.

Mozilla fixes 10 security Bugs including 3 Critical Bugs.

What’s new?

Firefox rolled out WebRender to more Windows users with Intel and AMD GPUs, bringing improved graphics performance to an even larger audience.

Security Fixes

Following high impact vulnerabilities have been fixed.

Mozilla Foundation Security Advisory 2020-30 Security Vulnerabilities fixed in Firefox 79 Announced
July 28, 2020

#CVE-2020-15652: Potential leak of redirect targets when loading scripts in a worker

Impact- high


By observing the stack trace for JavaScript errors in web workers, it was possible to leak the result of a cross-origin redirect. This applied only to content that can be parsed as script.

#CVE-2020-6514: WebRTC data channel leaks internal address to peer

Impact: high


WebRTC used the memory address of a class instance as a connection identifier. Unfortunately, this value is often transmitted to the peer, which allows bypassing ASLR.

#CVE-2020-15655: Extension APIs could be used to bypass Same-Origin Policy

Impact: high


Mozilla Developer Rob Wu discovered that a redirected HTTP request which is observed or modified through a web extension could bypass existing CORS checks, leading to potential disclosure of cross-origin information.

CVE-2020-15659: Memory safety bugs fixed in Firefox 79

Impact: high


Mozilla developers and community members Kevin Brosnan, Alexandru Michis, Natalia Csoregi, Jason Kratzer, Christian Holler, Simon Giesecke, Luke Wagner reported memory safety bugs present in Firefox 78. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.

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