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Red Hat Security Advisory
Synopsis: Critical: firefox security update
Advisory ID: RHSA-2020:2033-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2033
Issue date: 2020-05-06
CVE Names: CVE-2020-6831 CVE-2020-12387 CVE-2020-12392
CVE-2020-12395
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1. Summary:
An update for firefox is now available for Red Hat Enterprise Linux 8.0
Update Services for SAP Solutions.
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 AppStream E4S (v. 8.0) – 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 68.8.0 ESR.
Security Fix(es):
* Mozilla: Use-after-free during worker shutdown (CVE-2020-12387)
* Mozilla: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8
(CVE-2020-12395)
* Mozilla: Buffer overflow in SCTP chunk input validation (CVE-2020-6831)
* Mozilla: Arbitrary local file access with ‘Copy as cURL’ (CVE-2020-12392)
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/):
1831761 – CVE-2020-12387 Mozilla: Use-after-free during worker shutdown
1831763 – CVE-2020-6831 Mozilla: Buffer overflow in SCTP chunk input validation
1831764 – CVE-2020-12392 Mozilla: Arbitrary local file access with ‘Copy as cURL’
1831765 – CVE-2020-12395 Mozilla: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8
6. Package List:
Red Hat Enterprise Linux AppStream E4S (v. 8.0):
Source:
firefox-68.8.0-1.el8_0.src.rpm
aarch64:
firefox-68.8.0-1.el8_0.aarch64.rpm
firefox-debuginfo-68.8.0-1.el8_0.aarch64.rpm
firefox-debugsource-68.8.0-1.el8_0.aarch64.rpm
ppc64le:
firefox-68.8.0-1.el8_0.ppc64le.rpm
firefox-debuginfo-68.8.0-1.el8_0.ppc64le.rpm
firefox-debugsource-68.8.0-1.el8_0.ppc64le.rpm
s390x:
firefox-68.8.0-1.el8_0.s390x.rpm
firefox-debuginfo-68.8.0-1.el8_0.s390x.rpm
firefox-debugsource-68.8.0-1.el8_0.s390x.rpm
x86_64:
firefox-68.8.0-1.el8_0.x86_64.rpm
firefox-debuginfo-68.8.0-1.el8_0.x86_64.rpm
firefox-debugsource-68.8.0-1.el8_0.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-2020-6831
https://access.redhat.com/security/cve/CVE-2020-12387
https://access.redhat.com/security/cve/CVE-2020-12392
https://access.redhat.com/security/cve/CVE-2020-12395
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 2020 Red Hat, Inc.
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