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Red Hat Security Advisory 2021-0053-01

Red Hat Security Advisory 2021-0053-01
Posted Jan 11, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0053-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 78.6.1 ESR. Issues addressed include a use-after-free vulnerability.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2020-16044
MD5 | d88f179c5c353071de0371dfc532eae9

Red Hat Security Advisory 2021-0053-01

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

Synopsis: Critical: firefox security update
Advisory ID: RHSA-2021:0053-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0053
Issue date: 2021-01-11
CVE Names: CVE-2020-16044
=====================================================================

1. Summary:

An update for firefox is now available for Red Hat Enterprise Linux 7.

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 Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - 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 78.6.1 ESR.

Security Fix(es):

* Mozilla: Use-after-free write when handling a malicious COOKIE-ECHO SCTP
chunk (CVE-2020-16044)

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/):

1913503 - CVE-2020-16044 Mozilla: Use-after-free write when handling a malicious COOKIE-ECHO SCTP chunk

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
firefox-78.6.1-1.el7_9.src.rpm

x86_64:
firefox-78.6.1-1.el7_9.x86_64.rpm
firefox-debuginfo-78.6.1-1.el7_9.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
firefox-78.6.1-1.el7_9.i686.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
firefox-78.6.1-1.el7_9.src.rpm

ppc64:
firefox-78.6.1-1.el7_9.ppc64.rpm
firefox-debuginfo-78.6.1-1.el7_9.ppc64.rpm

ppc64le:
firefox-78.6.1-1.el7_9.ppc64le.rpm
firefox-debuginfo-78.6.1-1.el7_9.ppc64le.rpm

s390x:
firefox-78.6.1-1.el7_9.s390x.rpm
firefox-debuginfo-78.6.1-1.el7_9.s390x.rpm

x86_64:
firefox-78.6.1-1.el7_9.x86_64.rpm
firefox-debuginfo-78.6.1-1.el7_9.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

x86_64:
firefox-78.6.1-1.el7_9.i686.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
firefox-78.6.1-1.el7_9.src.rpm

x86_64:
firefox-78.6.1-1.el7_9.x86_64.rpm
firefox-debuginfo-78.6.1-1.el7_9.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
firefox-78.6.1-1.el7_9.i686.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-2020-16044
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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