[RHSA-2020:1496-01] Important: thunderbird security update

Thu Apr 16 20:30:07 UTC 2020

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 68.7.0.

Security Fix(es):

* Mozilla: Use-after-free while running the nsDocShell destructor
(CVE-2020-6819)

* Mozilla: Use-after-free when handling a ReadableStream (CVE-2020-6820)

* Mozilla: Uninitialized memory could be read when using the WebGL
copyTexSubImage method (CVE-2020-6821)

* Mozilla: Memory safety bugs fixed in Firefox 75 and Firefox ESR 68.7
(CVE-2020-6825)

* Mozilla: Out of bounds write in GMPDecodeData when processing large
images (CVE-2020-6822)

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/):

1820869 - CVE-2020-6819 Mozilla: Use-after-free while running the nsDocShell destructor
1820878 - CVE-2020-6820 Mozilla: Use-after-free when handling a ReadableStream
1821674 - CVE-2020-6821 Mozilla: Uninitialized memory could be read when using the WebGL copyTexSubImage method
1821676 - CVE-2020-6822 Mozilla: Out of bounds write in GMPDecodeData when processing large images
1821682 - CVE-2020-6825 Mozilla: Memory safety bugs fixed in Firefox 75 and Firefox ESR 68.7

6. Package List:

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

Source:
thunderbird-68.7.0-1.el8_0.src.rpm

ppc64le:
thunderbird-68.7.0-1.el8_0.ppc64le.rpm
thunderbird-debuginfo-68.7.0-1.el8_0.ppc64le.rpm
thunderbird-debugsource-68.7.0-1.el8_0.ppc64le.rpm

x86_64:
thunderbird-68.7.0-1.el8_0.x86_64.rpm
thunderbird-debuginfo-68.7.0-1.el8_0.x86_64.rpm
thunderbird-debugsource-68.7.0-1.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-2020-6819
https://access.redhat.com/security/cve/CVE-2020-6820
https://access.redhat.com/security/cve/CVE-2020-6821
https://access.redhat.com/security/cve/CVE-2020-6822
https://access.redhat.com/security/cve/CVE-2020-6825
https://access.redhat.com/security/updates/classification/#important
https://www.mozilla.org/en-US/security/advisories/mfsa2020-14/

8. Contact:

The Red Hat security contact is <secalert at 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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=+I9N
-----END PGP SIGNATURE-----