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Red Hat Security Advisory 2021-2743-01

Red Hat Security Advisory 2021-2743-01
Posted Jul 15, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-2743-01 - 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. Issues addressed include out of bounds write and use-after-free vulnerabilities.

tags | advisory, web, vulnerability
systems | linux, redhat
advisories | CVE-2021-29970, CVE-2021-29976, CVE-2021-30547
MD5 | e84d0782dbe4f6c15151ab0c2d46ea78

Red Hat Security Advisory 2021-2743-01

Change Mirror Download
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====================================================================
Red Hat Security Advisory

Synopsis: Important: firefox security update
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
CVE Names: CVE-2021-29970 CVE-2021-29976 CVE-2021-30547
====================================================================
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 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.

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 78.12.0 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.

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/):

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

6. 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/

7. 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

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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