RHSA-2020:3342 — Security Advisory

Red Hat Security Advisory: thunderbird security update

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Severity

Important

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · August 6, 2020

Updated · June 28, 2026

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 8.1 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 68.11.0.

Security Fix(es):

chromium-browser: Use after free in ANGLE (CVE-2020-6463)
chromium-browser: Inappropriate implementation in WebRTC (CVE-2020-6514)
Mozilla: Potential leak of redirect targets when loading scripts in a worker (CVE-2020-15652)
Mozilla: Memory safety bugs fixed in Firefox 79 and Firefox ESR 68.11 (CVE-2020-15659)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.