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Critical Security Update for Thunderbird in Red Hat Enterprise Linux 8

red hat
Calendar Grey February 24, 2021
Dist Redhat Esm H88
Canonical released a significant patch for Firefox, targeting several security flaws and strengthening defense mechanisms.
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 78.8.0.
Security Fix(es):
* Mozilla: Content Security Policy violation report could have contained the destination of a redirect (CVE-2021-23968)
* Mozilla: Content Security Policy violation report could have contained the destination of a redirect (CVE-2021-23969)
* Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8 (CVE-2021-23978)
* Mozilla: MediaError message property could have leaked information about cross-origin resources (CVE-2021-23973)
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 update software update Red Hat Enterprise Linux important Mozilla security impact red hat enterprise thunderbird memory safety cross-origin leak

References

https://access.redhat.com/security/cve/CVE-2021-23968 https://access.redhat.com/security/cve/CVE-2021-23969 https://access.redhat.com/security/cve/CVE-2021-23973 https://access.redhat.com/security/cve/CVE-2021-23978 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: thunderbird-78.8.0-1.el8_3.src.rpm
aarch64: thunderbird-78.8.0-1.el8_3.aarch64.rpm thunderbird-debuginfo-78.8.0-1.el8_3.aarch64.rpm thunderbird-debugsource-78.8.0-1.el8_3.aarch64.rpm
ppc64le: thunderbird-78.8.0-1.el8_3.ppc64le.rpm thunderbird-debuginfo-78.8.0-1.el8_3.ppc64le.rpm thunderbird-debugsource-78.8.0-1.el8_3.ppc64le.rpm
x86_64: thunderbird-78.8.0-1.el8_3.x86_64.rpm thunderbird-debuginfo-78.8.0-1.el8_3.x86_64.rpm thunderbird-debugsource-78.8.0-1.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-2021:0657-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0657
Issue date: 2021-02-24

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 update software update Red Hat Enterprise Linux important Mozilla security impact red hat enterprise thunderbird memory safety cross-origin leak

Relevant Releases Architectures

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

Bugs Fixed

1932109 - CVE-2021-23969 Mozilla: Content Security Policy violation report could have contained the destination of a redirect

1932110 - CVE-2021-23968 Mozilla: Content Security Policy violation report could have contained the destination of a redirect

1932111 - CVE-2021-23973 Mozilla: MediaError message property could have leaked information about cross-origin resources

1932112 - CVE-2021-23978 Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8

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