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Red Hat: RHSA-2021-3840-01 Important: Thunderbird Security Update

red hat
Calendar Grey October 13, 2021
Dist Redhat Esm H88
Ubuntu rolls out a critical patch for Firefox in 20.04 LTS focusing on several vulnerabilities.
An update for thunderbird is now available for Red Hat Enterprise Linux 8.1 Extended Update Support

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.

Summary

Mozilla Thunderbird is a standalone mail and newsgroup client.
This update upgrades Thunderbird to version 91.2.0.
Security Fix(es):
* Mozilla: Use-after-free in MessageTask (CVE-2021-38496)
* Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500)
* Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501)
* Mozilla: Downgrade attack on SMTP STARTTLS connections (CVE-2021-38502)
* rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810)
* Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497)
* Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498)
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.

Topics%20covered

Topics Covered

security advisory red hat enterprise thunderbird memory safety important update mail client smtp attack

References

https://access.redhat.com/security/cve/CVE-2021-32810 https://access.redhat.com/security/cve/CVE-2021-38496 https://access.redhat.com/security/cve/CVE-2021-38497 https://access.redhat.com/security/cve/CVE-2021-38498 https://access.redhat.com/security/cve/CVE-2021-38500 https://access.redhat.com/security/cve/CVE-2021-38501 https://access.redhat.com/security/cve/CVE-2021-38502 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream EUS (v. 8.1):
Source: thunderbird-91.2.0-1.el8_1.src.rpm
ppc64le: thunderbird-91.2.0-1.el8_1.ppc64le.rpm thunderbird-debuginfo-91.2.0-1.el8_1.ppc64le.rpm thunderbird-debugsource-91.2.0-1.el8_1.ppc64le.rpm
x86_64: thunderbird-91.2.0-1.el8_1.x86_64.rpm thunderbird-debuginfo-91.2.0-1.el8_1.x86_64.rpm thunderbird-debugsource-91.2.0-1.el8_1.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/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:3840-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3840
Issue date: 2021-10-13

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 8.1Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory red hat enterprise thunderbird memory safety important update mail client smtp attack

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v. 8.1) - ppc64le, x86_64

Bugs Fixed

1990342 - CVE-2021-32810 rust-crossbeam-deque: race condition may lead to double free

2011097 - CVE-2021-38496 Mozilla: Use-after-free in MessageTask

2011098 - CVE-2021-38497 Mozilla: Validation message could have been overlaid on another origin

2011099 - CVE-2021-38498 Mozilla: Use-after-free of nsLanguageAtomService object

2011100 - CVE-2021-38500 Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2

2011101 - CVE-2021-38501 Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2

2013469 - CVE-2021-38502 Mozilla: Downgrade attack on SMTP STARTTLS connections

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