-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

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

Synopsis:          Important: thunderbird security update
Advisory ID:       RHSA-2020:4163-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:4163
Issue date:        2020-10-01
CVE Names:         CVE-2020-15673 CVE-2020-15676 CVE-2020-15677 
                   CVE-2020-15678 
=====================================================================

1. Summary:

An update for thunderbird is now available for Red Hat Enterprise Linux 7.

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 Client (v. 7) - x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64le, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64

3. Description:

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 78.3.1.

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

All running instances of Thunderbird must be restarted for the update 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 Client (v. 7):

Source:
thunderbird-78.3.1-1.el7_9.src.rpm

x86_64:
thunderbird-78.3.1-1.el7_9.x86_64.rpm
thunderbird-debuginfo-78.3.1-1.el7_9.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

Source:
thunderbird-78.3.1-1.el7_9.src.rpm

ppc64le:
thunderbird-78.3.1-1.el7_9.ppc64le.rpm
thunderbird-debuginfo-78.3.1-1.el7_9.ppc64le.rpm

x86_64:
thunderbird-78.3.1-1.el7_9.x86_64.rpm
thunderbird-debuginfo-78.3.1-1.el7_9.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
thunderbird-78.3.1-1.el7_9.src.rpm

x86_64:
thunderbird-78.3.1-1.el7_9.x86_64.rpm
thunderbird-debuginfo-78.3.1-1.el7_9.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 <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=6rCk
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce