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

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

Synopsis:          Moderate: thunderbird security update
Advisory ID:       RHSA-2021:1201-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:1201
Issue date:        2021-04-14
CVE Names:         CVE-2021-23991 CVE-2021-23992 CVE-2021-23993 
=====================================================================

1. Summary:

An update for thunderbird is now available for Red Hat Enterprise Linux 8.2
Extended Update Support.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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. 8.2) - aarch64, ppc64le, x86_64

3. Description:

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 78.9.1.

Security Fix(es):

* Mozilla: An attacker may use Thunderbird's OpenPGP key refresh mechanism
to poison an existing key (CVE-2021-23991)

* Mozilla: A crafted OpenPGP key with an invalid user ID could be used to
confuse the user (CVE-2021-23992)

* Mozilla: Inability to send encrypted OpenPGP email after importing a
crafted OpenPGP key (CVE-2021-23993)

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/):

1948393 - CVE-2021-23991 Mozilla: An attacker may use Thunderbird's OpenPGP
 key refresh mechanism to poison an existing key
1948394 - CVE-2021-23992 Mozilla: A crafted OpenPGP key with an invalid user ID
 could be used to confuse the user
1948395 - CVE-2021-23993 Mozilla: Inability to send encrypted OpenPGP email
 after importing a crafted OpenPGP key

6. Package List:

Red Hat Enterprise Linux AppStream EUS (v. 8.2):

Source:
thunderbird-78.9.1-1.el8_2.src.rpm

aarch64:
thunderbird-78.9.1-1.el8_2.aarch64.rpm
thunderbird-debuginfo-78.9.1-1.el8_2.aarch64.rpm
thunderbird-debugsource-78.9.1-1.el8_2.aarch64.rpm

ppc64le:
thunderbird-78.9.1-1.el8_2.ppc64le.rpm
thunderbird-debuginfo-78.9.1-1.el8_2.ppc64le.rpm
thunderbird-debugsource-78.9.1-1.el8_2.ppc64le.rpm

x86_64:
thunderbird-78.9.1-1.el8_2.x86_64.rpm
thunderbird-debuginfo-78.9.1-1.el8_2.x86_64.rpm
thunderbird-debugsource-78.9.1-1.el8_2.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-2021-23991
https://access.redhat.com/security/cve/CVE-2021-23992
https://access.redhat.com/security/cve/CVE-2021-23993
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. 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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=dRF5
-----END PGP SIGNATURE-----

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