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Red Hat Enterprise Linux 8 RHSA-2021:2743 Firefox Important Memory Fix

red hat
Calendar Grey July 15, 2021
Dist Redhat Esm H88
A vital upgrade for Firefox on Red Hat Enterprise Linux 8 brings improved protection against memory vulnerabilities. Discover important information here.
An update for firefox is now available for Red Hat Enterprise Linux 8

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the update, Firefox must be restarted for the changes to take effect.

Summary

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.
This update upgrades Firefox to version 78.12.0 ESR.
Security Fix(es):
* Mozilla: Use-after-free in accessibility features of a document (CVE-2021-29970)
* Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12 (CVE-2021-29976)
* chromium-browser: Out of bounds write in ANGLE (CVE-2021-30547)
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.

Topics%20covered

Topics Covered

security advisory security issue update Red Hat Enterprise Linux important firefox memory safety

References

https://access.redhat.com/security/cve/CVE-2021-29970 https://access.redhat.com/security/cve/CVE-2021-29976 https://access.redhat.com/security/cve/CVE-2021-30547 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: firefox-78.12.0-1.el8_4.src.rpm
aarch64: firefox-78.12.0-1.el8_4.aarch64.rpm firefox-debuginfo-78.12.0-1.el8_4.aarch64.rpm firefox-debugsource-78.12.0-1.el8_4.aarch64.rpm
ppc64le: firefox-78.12.0-1.el8_4.ppc64le.rpm firefox-debuginfo-78.12.0-1.el8_4.ppc64le.rpm firefox-debugsource-78.12.0-1.el8_4.ppc64le.rpm
s390x: firefox-78.12.0-1.el8_4.s390x.rpm firefox-debuginfo-78.12.0-1.el8_4.s390x.rpm firefox-debugsource-78.12.0-1.el8_4.s390x.rpm
x86_64: firefox-78.12.0-1.el8_4.x86_64.rpm firefox-debuginfo-78.12.0-1.el8_4.x86_64.rpm firefox-debugsource-78.12.0-1.el8_4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2743-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2743
Issue date: 2021-07-15

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 impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security issue update Red Hat Enterprise Linux important firefox memory safety

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1970109 - CVE-2021-30547 chromium-browser: Out of bounds write in ANGLE

1982013 - CVE-2021-29970 Mozilla: Use-after-free in accessibility features of a document

1982014 - CVE-2021-29976 Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12

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