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RedHat: RHSA-2020-4913-01 Important: Thunderbird Memory Safety Fixes

red hat
Calendar Grey November 4, 2020
Dist Redhat Esm H88
New Thunderbird release launched for Red Hat Enterprise Linux, addressing critical security vulnerabilities related to memory handling and WebRTC functionality.
An update for thunderbird is now available for Red Hat Enterprise Linux 8

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 78.4.0.
Security Fix(es):
* Mozilla: Memory safety bugs fixed in Firefox 82 and Firefox ESR 78.4 (CVE-2020-15683)
* chromium-browser: Use after free in WebRTC (CVE-2020-15969)
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 security update Red Hat important thunderbird memory safety WebRTC

References

https://access.redhat.com/security/cve/CVE-2020-15683 https://access.redhat.com/security/cve/CVE-2020-15969 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: thunderbird-78.4.0-1.el8_3.src.rpm
aarch64: thunderbird-78.4.0-1.el8_3.aarch64.rpm thunderbird-debuginfo-78.4.0-1.el8_3.aarch64.rpm thunderbird-debugsource-78.4.0-1.el8_3.aarch64.rpm
ppc64le: thunderbird-78.4.0-1.el8_3.ppc64le.rpm thunderbird-debuginfo-78.4.0-1.el8_3.ppc64le.rpm thunderbird-debugsource-78.4.0-1.el8_3.ppc64le.rpm
x86_64: thunderbird-78.4.0-1.el8_3.x86_64.rpm thunderbird-debuginfo-78.4.0-1.el8_3.x86_64.rpm thunderbird-debugsource-78.4.0-1.el8_3.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-2020:4913-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4913
Issue date: 2020-11-04

Topic

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 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 security update Red Hat important thunderbird memory safety WebRTC

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, x86_64

Bugs Fixed

1885885 - CVE-2020-15969 chromium-browser: Use after free in WebRTC

1889932 - CVE-2020-15683 Mozilla: Memory safety bugs fixed in Firefox 82 and Firefox ESR 78.4

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