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RedHat 8: RHSA-2021-2233-01 Critical: Firefox Memory Safety Issue

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Calendar Grey June 3, 2021
Scroller Redhat
Important Firefox security patch for Red Hat Enterprise Linux 8 tackles memory vulnerability concerns. Prompt response is advised.
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 78.11.0 ESR.
Security Fix(es):
* Mozilla: Memory safety bugs fixed in Firefox 89 and Firefox ESR 78.11 (CVE-2021-29967)
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 update Red Hat critical software fix firefox memory safety

References

https://access.redhat.com/security/cve/CVE-2021-29967 https://access.redhat.com/security/updates/classification#critical

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: firefox-78.11.0-3.el8_4.src.rpm
aarch64: firefox-78.11.0-3.el8_4.aarch64.rpm firefox-debuginfo-78.11.0-3.el8_4.aarch64.rpm firefox-debugsource-78.11.0-3.el8_4.aarch64.rpm
ppc64le: firefox-78.11.0-3.el8_4.ppc64le.rpm firefox-debuginfo-78.11.0-3.el8_4.ppc64le.rpm firefox-debugsource-78.11.0-3.el8_4.ppc64le.rpm
s390x: firefox-78.11.0-3.el8_4.s390x.rpm firefox-debuginfo-78.11.0-3.el8_4.s390x.rpm firefox-debugsource-78.11.0-3.el8_4.s390x.rpm
x86_64: firefox-78.11.0-3.el8_4.x86_64.rpm firefox-debuginfo-78.11.0-3.el8_4.x86_64.rpm firefox-debugsource-78.11.0-3.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
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2233-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2233
Issue date: 2021-06-03

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 Critical. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update Red Hat critical software fix firefox memory safety

Relevant Releases Architectures

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

Bugs Fixed

1966831 - CVE-2021-29967 Mozilla: Memory safety bugs fixed in Firefox 89 and Firefox ESR 78.11

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