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Red Hat Security Advisory

Synopsis: Important: thunderbird security update
Advisory ID: RHSA-2020:0565-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0565
Issue date: 2020-02-20
CVE Names: CVE-2020-6792 CVE-2020-6793 CVE-2020-6794
CVE-2020-6795 CVE-2020-6798 CVE-2020-6800
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1. Summary:

An update for thunderbird is now available for Red Hat Enterprise Linux 8.0
Update Services for SAP Solutions.

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 E4S (v. 8.0) – ppc64le, x86_64

3. Description:

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 68.5.0.

Security Fix(es):

* Mozilla: Memory safety bugs fixed in Firefox 73 and Firefox ESR 68.5
(CVE-2020-6800)

* Mozilla: Out-of-bounds read when processing certain email messages
(CVE-2020-6793)

* Mozilla: Setting a master password post-Thunderbird 52 does not delete
unencrypted previously stored passwords (CVE-2020-6794)

* Mozilla: Crash processing S/MIME messages with multiple signatures
(CVE-2020-6795)

* Mozilla: Incorrect parsing of template tag could result in JavaScript
injection (CVE-2020-6798)

* Mozilla: Message ID calculation was based on uninitialized data
(CVE-2020-6792)

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/):

1801918 – CVE-2020-6798 Mozilla: Incorrect parsing of template tag could result in JavaScript injection
1801920 – CVE-2020-6800 Mozilla: Memory safety bugs fixed in Firefox 73 and Firefox ESR 68.5
1801955 – CVE-2020-6793 Mozilla: Out-of-bounds read when processing certain email messages
1801956 – CVE-2020-6794 Mozilla: Setting a master password post-Thunderbird 52 does not delete unencrypted previously stored passwords
1801957 – CVE-2020-6795 Mozilla: Crash processing S/MIME messages with multiple signatures
1801958 – CVE-2020-6792 Mozilla: Message ID calculation was based on uninitialized data

6. Package List:

Red Hat Enterprise Linux AppStream E4S (v. 8.0):

Source:
thunderbird-68.5.0-1.el8_0.src.rpm

ppc64le:
thunderbird-68.5.0-1.el8_0.ppc64le.rpm
thunderbird-debuginfo-68.5.0-1.el8_0.ppc64le.rpm
thunderbird-debugsource-68.5.0-1.el8_0.ppc64le.rpm

x86_64:
thunderbird-68.5.0-1.el8_0.x86_64.rpm
thunderbird-debuginfo-68.5.0-1.el8_0.x86_64.rpm
thunderbird-debugsource-68.5.0-1.el8_0.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-2020-6792
https://access.redhat.com/security/cve/CVE-2020-6793
https://access.redhat.com/security/cve/CVE-2020-6794
https://access.redhat.com/security/cve/CVE-2020-6795
https://access.redhat.com/security/cve/CVE-2020-6798
https://access.redhat.com/security/cve/CVE-2020-6800
https://access.redhat.com/security/updates/classification/#important
https://www.mozilla.org/en-US/security/advisories/mfsa2020-07/

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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