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Red Hat Security Advisory 2021-2233-01

Red Hat Security Advisory 2021-2233-01
Posted Jun 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-2233-01 - 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.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2021-29967
MD5 | 866197a91446ad6261986ed4478850e6

Red Hat Security Advisory 2021-2233-01

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====================================================================
Red Hat Security Advisory

Synopsis: Critical: firefox security update
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
CVE Names: CVE-2021-29967
====================================================================
1. Summary:

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 Critical. 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.

2. Relevant releases/architectures:

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

3. Description:

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.

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

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

6. 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/

7. References:

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

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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