Red Hat Security Advisory 2020-3833-01 ≈ Packet Storm
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Red Hat Security Advisory
Synopsis: Important: firefox security update
Advisory ID: RHSA-2020:3833-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3833
Issue date: 2020-09-24
CVE Names: CVE-2020-15673 CVE-2020-15676 CVE-2020-15677
CVE-2020-15678
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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 78.3.0 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 AppStream EUS (v. 8.1):
Source:
firefox-78.3.0-1.el8_1.src.rpm
aarch64:
firefox-78.3.0-1.el8_1.aarch64.rpm
firefox-debuginfo-78.3.0-1.el8_1.aarch64.rpm
firefox-debugsource-78.3.0-1.el8_1.aarch64.rpm
ppc64le:
firefox-78.3.0-1.el8_1.ppc64le.rpm
firefox-debuginfo-78.3.0-1.el8_1.ppc64le.rpm
firefox-debugsource-78.3.0-1.el8_1.ppc64le.rpm
s390x:
firefox-78.3.0-1.el8_1.s390x.rpm
firefox-debuginfo-78.3.0-1.el8_1.s390x.rpm
firefox-debugsource-78.3.0-1.el8_1.s390x.rpm
x86_64:
firefox-78.3.0-1.el8_1.x86_64.rpm
firefox-debuginfo-78.3.0-1.el8_1.x86_64.rpm
firefox-debugsource-78.3.0-1.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-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
details at https://access.redhat.com/security/team/contact/
Copyright 2020 Red Hat, Inc.
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