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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: thunderbird security update
Advisory ID:       RHSA-2020:3342-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:3342
Issue date:        2020-08-06
CVE Names:         CVE-2020-6463 CVE-2020-6514 CVE-2020-15652 
                   CVE-2020-15659 
=====================================================================

1. Summary:

An update for thunderbird 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) - ppc64le, x86_64

3. Description:

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 68.11.0.

Security Fix(es):

* chromium-browser: Use after free in ANGLE (CVE-2020-6463)

* chromium-browser: Inappropriate implementation in WebRTC (CVE-2020-6514)

* Mozilla: Potential leak of redirect targets when loading scripts in a
worker (CVE-2020-15652)

* Mozilla: Memory safety bugs fixed in Firefox 79 and Firefox ESR 68.11
(CVE-2020-15659)

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

All running instances of Thunderbird must be restarted for the update to
take effect.

5. Bugs fixed (https://bugzilla.redhat.com/):

1840893 - CVE-2020-6463 chromium-browser: Use after free in ANGLE
1857349 - CVE-2020-6514 chromium-browser: Inappropriate implementation in
 WebRTC
1861570 - CVE-2020-15652 Mozilla: Potential leak of redirect targets when
 loading scripts in a worker
1861572 - CVE-2020-15659 Mozilla: Memory safety bugs fixed in Firefox 79 and
 Firefox ESR 68.11

6. Package List:

Red Hat Enterprise Linux AppStream EUS (v. 8.1):

Source:
thunderbird-68.11.0-1.el8_1.src.rpm

ppc64le:
thunderbird-68.11.0-1.el8_1.ppc64le.rpm
thunderbird-debuginfo-68.11.0-1.el8_1.ppc64le.rpm
thunderbird-debugsource-68.11.0-1.el8_1.ppc64le.rpm

x86_64:
thunderbird-68.11.0-1.el8_1.x86_64.rpm
thunderbird-debuginfo-68.11.0-1.el8_1.x86_64.rpm
thunderbird-debugsource-68.11.0-1.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-2020-6463
https://access.redhat.com/security/cve/CVE-2020-6514
https://access.redhat.com/security/cve/CVE-2020-15652
https://access.redhat.com/security/cve/CVE-2020-15659
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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