ArchLinux: 202002-5 Critical: Firefox Remote Code Execution and XSS

The package firefox before version 73.0-1 is vulnerable to multiple issues including arbitrary code execution and cross-site scripting.

Arch Linux Security Advisory ASA-202002-5
========================================
Severity: Critical
Date    : 2020-02-11
CVE-ID  : CVE-2020-6796 CVE-2020-6798 CVE-2020-6800 CVE-2020-6801
Package : firefox
Type    : multiple issues
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1096

Summary
======
The package firefox before version 73.0-1 is vulnerable to multiple
issues including arbitrary code execution and cross-site scripting.

Resolution
=========
Upgrade to 73.0-1.

# pacman -Syu "firefox>=73.0-1"

The problems have been fixed upstream in version 73.0.

Workaround
=========
None.

Description
==========
- CVE-2020-6796 (arbitrary code execution)

A missing bounds check on shared memory read in the parent process has
been found in Firefox before 73.0. A content process could have
modified shared memory relating to crash reporting information, crash
itself, and cause an out-of-bound write. This could have caused memory
corruption and a potentially exploitable crash.

- CVE-2020-6798 (cross-site scripting)

An incorrect parsing of template could result in Javascript injection
in Firefox before 73.0 and Thunderbird before 68.5. If a