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Red Hat Enterprise Linux 8.2 RHSA-2021-2914-01 Important DoS Issues

red hat
Calendar Grey July 27, 2021
Dist Redhat Esm H88
Crucial security revision for Thunderbird on Red Hat Enterprise Linux 8.2, tackling several severe vulnerabilities.
An update for thunderbird is now available for Red Hat Enterprise Linux 8.2 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 78.12.0.
Security Fix(es):
* Mozilla: IMAP server responses sent by a MITM prior to STARTTLS could be processed (CVE-2021-29969)
* Mozilla: Use-after-free in accessibility features of a document (CVE-2021-29970)
* Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12 (CVE-2021-29976)
* chromium-browser: Out of bounds write in ANGLE (CVE-2021-30547)
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 thunderbird dos issue important severity

References

https://access.redhat.com/security/cve/CVE-2021-29969 https://access.redhat.com/security/cve/CVE-2021-29970 https://access.redhat.com/security/cve/CVE-2021-29976 https://access.redhat.com/security/cve/CVE-2021-30547 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AppStream EUS (v. 8.2):
Source: thunderbird-78.12.0-2.el8_2.src.rpm
aarch64: thunderbird-78.12.0-2.el8_2.aarch64.rpm thunderbird-debuginfo-78.12.0-2.el8_2.aarch64.rpm thunderbird-debugsource-78.12.0-2.el8_2.aarch64.rpm
ppc64le: thunderbird-78.12.0-2.el8_2.ppc64le.rpm thunderbird-debuginfo-78.12.0-2.el8_2.ppc64le.rpm thunderbird-debugsource-78.12.0-2.el8_2.ppc64le.rpm
x86_64: thunderbird-78.12.0-2.el8_2.x86_64.rpm thunderbird-debuginfo-78.12.0-2.el8_2.x86_64.rpm thunderbird-debugsource-78.12.0-2.el8_2.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-2021:2914-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2914
Issue date: 2021-07-27

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 8.2Extended 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 thunderbird dos issue important severity

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v. 8.2) - aarch64, ppc64le, x86_64

Bugs Fixed

1970109 - CVE-2021-30547 chromium-browser: Out of bounds write in ANGLE

1982013 - CVE-2021-29970 Mozilla: Use-after-free in accessibility features of a document

1982014 - CVE-2021-29976 Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12

1982015 - CVE-2021-29969 Mozilla: IMAP server responses sent by a MITM prior to STARTTLS could be processed

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