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Red Hat Security Advisory
Synopsis: Important: firefox security update
Advisory ID: RHSA-2020:3835-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3835
Issue date: 2020-09-24
CVE Names: CVE-2020-15673 CVE-2020-15676 CVE-2020-15677
CVE-2020-15678
=====================================================================
1. Summary:
An update for firefox is now available for Red Hat Enterprise Linux 6.
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 Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - 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 78.3.0 ESR.
Security Fix(es):
* Mozilla: Memory safety bugs fixed in Firefox 81 and Firefox ESR 78.3
(CVE-2020-15673)
* Mozilla: XSS when pasting attacker-controlled data into a contenteditable
element (CVE-2020-15676)
* Mozilla: Download origin spoofing via redirect (CVE-2020-15677)
* Mozilla: When recursing through layers while scrolling, an iterator may
have become invalid, resulting in a potential use-after-free scenario
(CVE-2020-15678)
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/):
1881664 - CVE-2020-15677 Mozilla: Download origin spoofing via redirect
1881665 - CVE-2020-15676 Mozilla: XSS when pasting attacker-controlled data
into a contenteditable element
1881666 - CVE-2020-15678 Mozilla: When recursing through layers while
scrolling, an iterator may have become invalid, resulting in a potential use-after-free scenario
1881667 - CVE-2020-15673 Mozilla: Memory safety bugs fixed in Firefox 81 and
Firefox ESR 78.3
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source:
firefox-78.3.0-1.el6_10.src.rpm
i386:
firefox-78.3.0-1.el6_10.i686.rpm
x86_64:
firefox-78.3.0-1.el6_10.x86_64.rpm
firefox-debuginfo-78.3.0-1.el6_10.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
x86_64:
firefox-78.3.0-1.el6_10.i686.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
firefox-78.3.0-1.el6_10.src.rpm
x86_64:
firefox-78.3.0-1.el6_10.i686.rpm
firefox-78.3.0-1.el6_10.x86_64.rpm
firefox-debuginfo-78.3.0-1.el6_10.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
firefox-78.3.0-1.el6_10.src.rpm
i386:
firefox-78.3.0-1.el6_10.i686.rpm
ppc64:
firefox-78.3.0-1.el6_10.ppc64.rpm
firefox-debuginfo-78.3.0-1.el6_10.ppc64.rpm
s390x:
firefox-78.3.0-1.el6_10.s390x.rpm
firefox-debuginfo-78.3.0-1.el6_10.s390x.rpm
x86_64:
firefox-78.3.0-1.el6_10.x86_64.rpm
firefox-debuginfo-78.3.0-1.el6_10.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
x86_64:
firefox-78.3.0-1.el6_10.i686.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
firefox-78.3.0-1.el6_10.src.rpm
i386:
firefox-78.3.0-1.el6_10.i686.rpm
x86_64:
firefox-78.3.0-1.el6_10.x86_64.rpm
firefox-debuginfo-78.3.0-1.el6_10.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
x86_64:
firefox-78.3.0-1.el6_10.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-2020-15673
https://access.redhat.com/security/cve/CVE-2020-15676
https://access.redhat.com/security/cve/CVE-2020-15677
https://access.redhat.com/security/cve/CVE-2020-15678
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 2020 Red Hat, Inc.
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