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

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

Synopsis:          Important: thunderbird security update
Advisory ID:       RHSA-2021:0657-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:0657
Issue date:        2021-02-24
CVE Names:         CVE-2021-23968 CVE-2021-23969 CVE-2021-23973 
                   CVE-2021-23978 
=====================================================================

1. Summary:

An update for thunderbird is now available for Red Hat Enterprise Linux 8.

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 (v. 8) - aarch64, ppc64le, x86_64

3. Description:

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 78.8.0.

Security Fix(es):

* Mozilla: Content Security Policy violation report could have contained
the destination of a redirect (CVE-2021-23968)

* Mozilla: Content Security Policy violation report could have contained
the destination of a redirect (CVE-2021-23969)

* Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8
(CVE-2021-23978)

* Mozilla: MediaError message property could have leaked information about
cross-origin resources (CVE-2021-23973)

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/):

1932109 - CVE-2021-23969 Mozilla: Content Security Policy violation report could have contained the destination of a redirect
1932110 - CVE-2021-23968 Mozilla: Content Security Policy violation report could have contained the destination of a redirect
1932111 - CVE-2021-23973 Mozilla: MediaError message property could have leaked information about cross-origin resources
1932112 - CVE-2021-23978 Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
thunderbird-78.8.0-1.el8_3.src.rpm

aarch64:
thunderbird-78.8.0-1.el8_3.aarch64.rpm
thunderbird-debuginfo-78.8.0-1.el8_3.aarch64.rpm
thunderbird-debugsource-78.8.0-1.el8_3.aarch64.rpm

ppc64le:
thunderbird-78.8.0-1.el8_3.ppc64le.rpm
thunderbird-debuginfo-78.8.0-1.el8_3.ppc64le.rpm
thunderbird-debugsource-78.8.0-1.el8_3.ppc64le.rpm

x86_64:
thunderbird-78.8.0-1.el8_3.x86_64.rpm
thunderbird-debuginfo-78.8.0-1.el8_3.x86_64.rpm
thunderbird-debugsource-78.8.0-1.el8_3.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-2021-23968
https://access.redhat.com/security/cve/CVE-2021-23969
https://access.redhat.com/security/cve/CVE-2021-23973
https://access.redhat.com/security/cve/CVE-2021-23978
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 2021 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=Nzip
-----END PGP SIGNATURE-----

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