RHSA-2020:2828 — Security Advisory

Red Hat Security Advisory: firefox security update

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Severity

Important

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · July 7, 2020

Updated · November 22, 2025

Topic

An update for firefox is now available for Red Hat Enterprise Linux 8.

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 Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 68.10.0 ESR.

Security Fix(es):

  • Mozilla: Memory corruption due to missing sign-extension for ValueTags on ARM64 (CVE-2020-12417)

  • Mozilla: Information disclosure due to manipulated URL object (CVE-2020-12418)

  • Mozilla: Use-after-free in nsGlobalWindowInner (CVE-2020-12419)

  • Mozilla: Use-After-Free when trying to connect to a STUN server (CVE-2020-12420)

  • Mozilla: Add-On updates did not respect the same certificate trust rules as software updates (CVE-2020-12421)

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.

Related CVEs

RHSA-2020:2828 — Red Hat Security Advisory: firefox security update | PulseLinux