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

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

Synopsis:          Important: thunderbird security update
Advisory ID:       RHSA-2020:5618-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:5618
Issue date:        2020-12-17
CVE Names:         CVE-2020-16042 CVE-2020-26971 CVE-2020-26973 
                   CVE-2020-26974 CVE-2020-26978 CVE-2020-35111 
                   CVE-2020-35113 
=====================================================================

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 78.6.0.

Security Fix(es):

* chromium-browser: Uninitialized Use in V8 (CVE-2020-16042)

* Mozilla: Heap buffer overflow in WebGL (CVE-2020-26971)

* Mozilla: CSS Sanitizer performed incorrect sanitization (CVE-2020-26973)

* Mozilla: Incorrect cast of StyleGenericFlexBasis resulted in a heap
use-after-free (CVE-2020-26974)

* Mozilla: Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6
(CVE-2020-35113)

* Mozilla: Internal network hosts could have been probed by a malicious
webpage (CVE-2020-26978)

* Mozilla: The proxy.onRequest API did not catch view-source URLs
(CVE-2020-35111)

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/):

1904515 - CVE-2020-16042 chromium-browser: Uninitialized Use in V8
1908022 - CVE-2020-26971 Mozilla: Heap buffer overflow in WebGL
1908023 - CVE-2020-26973 Mozilla: CSS Sanitizer performed incorrect sanitization
1908024 - CVE-2020-26974 Mozilla: Incorrect cast of StyleGenericFlexBasis resulted in a heap use-after-free
1908025 - CVE-2020-26978 Mozilla: Internal network hosts could have been probed by a malicious webpage
1908027 - CVE-2020-35111 Mozilla: The proxy.onRequest API did not catch view-source URLs
1908029 - CVE-2020-35113 Mozilla: Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
thunderbird-78.6.0-1.el7_9.src.rpm

x86_64:
thunderbird-78.6.0-1.el7_9.x86_64.rpm
thunderbird-debuginfo-78.6.0-1.el7_9.x86_64.rpm

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

Source:
thunderbird-78.6.0-1.el7_9.src.rpm

ppc64le:
thunderbird-78.6.0-1.el7_9.ppc64le.rpm
thunderbird-debuginfo-78.6.0-1.el7_9.ppc64le.rpm

x86_64:
thunderbird-78.6.0-1.el7_9.x86_64.rpm
thunderbird-debuginfo-78.6.0-1.el7_9.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
thunderbird-78.6.0-1.el7_9.src.rpm

x86_64:
thunderbird-78.6.0-1.el7_9.x86_64.rpm
thunderbird-debuginfo-78.6.0-1.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-2020-16042
https://access.redhat.com/security/cve/CVE-2020-26971
https://access.redhat.com/security/cve/CVE-2020-26973
https://access.redhat.com/security/cve/CVE-2020-26974
https://access.redhat.com/security/cve/CVE-2020-26978
https://access.redhat.com/security/cve/CVE-2020-35111
https://access.redhat.com/security/cve/CVE-2020-35113
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is . 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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=Ayzx
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/rhsa-announce