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Red Hat Security Advisory 2020-2036-01

Red Hat Security Advisory 2020-2036-01
Posted May 6, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2036-01 - 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. Issues addressed include buffer overflow and use-after-free vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-6831
SHA-256 | 3109046f4e885562c23a6bdcc63b95c7e4fe7902a3d60d53e6b0e7d4e260a8d7

Red Hat Security Advisory 2020-2036-01

Change Mirror Download
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=====================================================================
Red Hat Security Advisory

Synopsis: Critical: firefox security update
Advisory ID: RHSA-2020:2036-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2036
Issue date: 2020-05-06
CVE Names: CVE-2020-6831 CVE-2020-12387 CVE-2020-12392
CVE-2020-12395
=====================================================================

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 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 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 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 Desktop (v. 6):

Source:
firefox-68.8.0-1.el6_10.src.rpm

i386:
firefox-68.8.0-1.el6_10.i686.rpm
firefox-debuginfo-68.8.0-1.el6_10.i686.rpm

x86_64:
firefox-68.8.0-1.el6_10.x86_64.rpm
firefox-debuginfo-68.8.0-1.el6_10.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

x86_64:
firefox-68.8.0-1.el6_10.i686.rpm
firefox-debuginfo-68.8.0-1.el6_10.i686.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
firefox-68.8.0-1.el6_10.src.rpm

x86_64:
firefox-68.8.0-1.el6_10.i686.rpm
firefox-68.8.0-1.el6_10.x86_64.rpm
firefox-debuginfo-68.8.0-1.el6_10.i686.rpm
firefox-debuginfo-68.8.0-1.el6_10.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
firefox-68.8.0-1.el6_10.src.rpm

i386:
firefox-68.8.0-1.el6_10.i686.rpm
firefox-debuginfo-68.8.0-1.el6_10.i686.rpm

ppc64:
firefox-68.8.0-1.el6_10.ppc64.rpm
firefox-debuginfo-68.8.0-1.el6_10.ppc64.rpm

s390x:
firefox-68.8.0-1.el6_10.s390x.rpm
firefox-debuginfo-68.8.0-1.el6_10.s390x.rpm

x86_64:
firefox-68.8.0-1.el6_10.x86_64.rpm
firefox-debuginfo-68.8.0-1.el6_10.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

x86_64:
firefox-68.8.0-1.el6_10.i686.rpm
firefox-debuginfo-68.8.0-1.el6_10.i686.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
firefox-68.8.0-1.el6_10.src.rpm

i386:
firefox-68.8.0-1.el6_10.i686.rpm
firefox-debuginfo-68.8.0-1.el6_10.i686.rpm

x86_64:
firefox-68.8.0-1.el6_10.x86_64.rpm
firefox-debuginfo-68.8.0-1.el6_10.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

x86_64:
firefox-68.8.0-1.el6_10.i686.rpm
firefox-debuginfo-68.8.0-1.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-2020-6831
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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