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Red Hat Security Advisory 2021-3155-01

Red Hat Security Advisory 2021-3155-01
Posted Aug 16, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3155-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.13.0. Issues addressed include a use-after-free vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-29980, CVE-2021-29984, CVE-2021-29985, CVE-2021-29986, CVE-2021-29988, CVE-2021-29989
SHA-256 | 3fc7f51b068fb9d2206ef589d4f12b839e5229c56a6c03fb010bedd1bed19ef9

Red Hat Security Advisory 2021-3155-01

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

Synopsis: Important: thunderbird security update
Advisory ID: RHSA-2021:3155-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3155
Issue date: 2021-08-16
CVE Names: CVE-2021-29980 CVE-2021-29984 CVE-2021-29985
CVE-2021-29986 CVE-2021-29988 CVE-2021-29989
=====================================================================

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, s390x, x86_64

3. Description:

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 78.13.0.

Security Fix(es):

* Mozilla: Uninitialized memory in a canvas object could have led to memory
corruption (CVE-2021-29980)

* Mozilla: Incorrect instruction reordering during JIT optimization
(CVE-2021-29984)

* Mozilla: Race condition when resolving DNS names could have led to memory
corruption (CVE-2021-29986)

* Mozilla: Memory corruption as a result of incorrect style treatment
(CVE-2021-29988)

* Mozilla: Memory safety bugs fixed in Thunderbird 78.13 (CVE-2021-29989)

* Mozilla: Use-after-free media channels (CVE-2021-29985)

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/):

1992417 - CVE-2021-29986 Mozilla: Race condition when resolving DNS names could have led to memory corruption
1992419 - CVE-2021-29988 Mozilla: Memory corruption as a result of incorrect style treatment
1992420 - CVE-2021-29984 Mozilla: Incorrect instruction reordering during JIT optimization
1992421 - CVE-2021-29980 Mozilla: Uninitialized memory in a canvas object could have led to memory corruption
1992422 - CVE-2021-29985 Mozilla: Use-after-free media channels
1992423 - CVE-2021-29989 Mozilla: Memory safety bugs fixed in Thunderbird 78.13

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
thunderbird-78.13.0-1.el8_4.src.rpm

aarch64:
thunderbird-78.13.0-1.el8_4.aarch64.rpm
thunderbird-debuginfo-78.13.0-1.el8_4.aarch64.rpm
thunderbird-debugsource-78.13.0-1.el8_4.aarch64.rpm

ppc64le:
thunderbird-78.13.0-1.el8_4.ppc64le.rpm
thunderbird-debuginfo-78.13.0-1.el8_4.ppc64le.rpm
thunderbird-debugsource-78.13.0-1.el8_4.ppc64le.rpm

s390x:
thunderbird-78.13.0-1.el8_4.s390x.rpm
thunderbird-debuginfo-78.13.0-1.el8_4.s390x.rpm
thunderbird-debugsource-78.13.0-1.el8_4.s390x.rpm

x86_64:
thunderbird-78.13.0-1.el8_4.x86_64.rpm
thunderbird-debuginfo-78.13.0-1.el8_4.x86_64.rpm
thunderbird-debugsource-78.13.0-1.el8_4.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-2021-29980
https://access.redhat.com/security/cve/CVE-2021-29984
https://access.redhat.com/security/cve/CVE-2021-29985
https://access.redhat.com/security/cve/CVE-2021-29986
https://access.redhat.com/security/cve/CVE-2021-29988
https://access.redhat.com/security/cve/CVE-2021-29989
https://access.redhat.com/security/updates/classification/#important

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.
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