Red Hat Security Advisory 2021-3159-01

—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA256

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

Synopsis: Important: firefox security update
Advisory ID: RHSA-2021:3159-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3159
Issue date: 2021-08-16
CVE Names: CVE-2021-29980 CVE-2021-29984 CVE-2021-29985
CVE-2021-29986 CVE-2021-29988 CVE-2021-29989
=====================================================================

1. Summary:

An update for firefox is now available for Red Hat Enterprise Linux 8.1
Extended Update Support.

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 EUS (v. 8.1) – 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 78.13.0 ESR.

Security Fix(es):

* Mozilla: Uninitialized memory in a canvas object could have led to memory
corruption (CVE-2021-29980)

* Mozilla: Incorrect instruction reordering during JIT optimization
(CVE-2021-29984)

* Mozilla: Race condition when resolving DNS names could have led to memory
corruption (CVE-2021-29986)

* Mozilla: Memory corruption as a result of incorrect style treatment
(CVE-2021-29988)

* Mozilla: Memory safety bugs fixed in Thunderbird 78.13 (CVE-2021-29989)

* Mozilla: Use-after-free media channels (CVE-2021-29985)

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/):

1992417 – CVE-2021-29986 Mozilla: Race condition when resolving DNS names could have led to memory corruption
1992419 – CVE-2021-29988 Mozilla: Memory corruption as a result of incorrect style treatment
1992420 – CVE-2021-29984 Mozilla: Incorrect instruction reordering during JIT optimization
1992421 – CVE-2021-29980 Mozilla: Uninitialized memory in a canvas object could have led to memory corruption
1992422 – CVE-2021-29985 Mozilla: Use-after-free media channels
1992423 – CVE-2021-29989 Mozilla: Memory safety bugs fixed in Thunderbird 78.13

6. Package List:

Red Hat Enterprise Linux AppStream EUS (v. 8.1):

Source:
firefox-78.13.0-2.el8_1.src.rpm

aarch64:
firefox-78.13.0-2.el8_1.aarch64.rpm
firefox-debuginfo-78.13.0-2.el8_1.aarch64.rpm
firefox-debugsource-78.13.0-2.el8_1.aarch64.rpm

ppc64le:
firefox-78.13.0-2.el8_1.ppc64le.rpm
firefox-debuginfo-78.13.0-2.el8_1.ppc64le.rpm
firefox-debugsource-78.13.0-2.el8_1.ppc64le.rpm

s390x:
firefox-78.13.0-2.el8_1.s390x.rpm
firefox-debuginfo-78.13.0-2.el8_1.s390x.rpm
firefox-debugsource-78.13.0-2.el8_1.s390x.rpm

x86_64:
firefox-78.13.0-2.el8_1.x86_64.rpm
firefox-debuginfo-78.13.0-2.el8_1.x86_64.rpm
firefox-debugsource-78.13.0-2.el8_1.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-2021-29980
https://access.redhat.com/security/cve/CVE-2021-29984
https://access.redhat.com/security/cve/CVE-2021-29985
https://access.redhat.com/security/cve/CVE-2021-29986
https://access.redhat.com/security/cve/CVE-2021-29988
https://access.redhat.com/security/cve/CVE-2021-29989
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.
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1
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=YMGm
—–END PGP SIGNATURE—–


RHSA-announce mailing list
RHSA-announce@redhat.com
https://listman.redhat.com/mailman/listinfo/rhsa-announce