[RHSA-2020:5561-01] Important: firefox security update
Security announcements for all Red Hat products and services.
rhsa-announce at redhat.com
Wed Dec 16 08:23:23 UTC 2020
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Red Hat Security Advisory
Synopsis: Important: firefox security update
Advisory ID: RHSA-2020:5561-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:5561
Issue date: 2020-12-16
CVE Names: CVE-2020-16042 CVE-2020-26971 CVE-2020-26973
CVE-2020-26974 CVE-2020-26978 CVE-2020-35111
CVE-2020-35113
=====================================================================
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 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 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 78.6.0 ESR.
Security Fix(es):
* chromium-browser: Uninitialized Use in V8 (CVE-2020-16042)
* Mozilla: Heap buffer overflow in WebGL (CVE-2020-26971)
* Mozilla: CSS Sanitizer performed incorrect sanitization (CVE-2020-26973)
* Mozilla: Incorrect cast of StyleGenericFlexBasis resulted in a heap
use-after-free (CVE-2020-26974)
* Mozilla: Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6
(CVE-2020-35113)
* Mozilla: Internal network hosts could have been probed by a malicious
webpage (CVE-2020-26978)
* Mozilla: The proxy.onRequest API did not catch view-source URLs
(CVE-2020-35111)
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/):
1904515 - CVE-2020-16042 chromium-browser: Uninitialized Use in V8
1908022 - CVE-2020-26971 Mozilla: Heap buffer overflow in WebGL
1908023 - CVE-2020-26973 Mozilla: CSS Sanitizer performed incorrect sanitization
1908024 - CVE-2020-26974 Mozilla: Incorrect cast of StyleGenericFlexBasis resulted in a heap use-after-free
1908025 - CVE-2020-26978 Mozilla: Internal network hosts could have been probed by a malicious webpage
1908027 - CVE-2020-35111 Mozilla: The proxy.onRequest API did not catch view-source URLs
1908029 - CVE-2020-35113 Mozilla: Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6
6. Package List:
Red Hat Enterprise Linux Client (v. 7):
Source:
firefox-78.6.0-1.el7_9.src.rpm
x86_64:
firefox-78.6.0-1.el7_9.x86_64.rpm
firefox-debuginfo-78.6.0-1.el7_9.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64:
firefox-78.6.0-1.el7_9.i686.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
firefox-78.6.0-1.el7_9.src.rpm
ppc64:
firefox-78.6.0-1.el7_9.ppc64.rpm
firefox-debuginfo-78.6.0-1.el7_9.ppc64.rpm
ppc64le:
firefox-78.6.0-1.el7_9.ppc64le.rpm
firefox-debuginfo-78.6.0-1.el7_9.ppc64le.rpm
s390x:
firefox-78.6.0-1.el7_9.s390x.rpm
firefox-debuginfo-78.6.0-1.el7_9.s390x.rpm
x86_64:
firefox-78.6.0-1.el7_9.x86_64.rpm
firefox-debuginfo-78.6.0-1.el7_9.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
x86_64:
firefox-78.6.0-1.el7_9.i686.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
firefox-78.6.0-1.el7_9.src.rpm
x86_64:
firefox-78.6.0-1.el7_9.x86_64.rpm
firefox-debuginfo-78.6.0-1.el7_9.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64:
firefox-78.6.0-1.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-2020-16042
https://access.redhat.com/security/cve/CVE-2020-26971
https://access.redhat.com/security/cve/CVE-2020-26973
https://access.redhat.com/security/cve/CVE-2020-26974
https://access.redhat.com/security/cve/CVE-2020-26978
https://access.redhat.com/security/cve/CVE-2020-35111
https://access.redhat.com/security/cve/CVE-2020-35113
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert at redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2020 Red Hat, Inc.
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