Headline

RHSA-2021:5046: Red Hat Security Advisory: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 7. 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.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

Related CVEs:

CVE-2021-43528: Mozilla: JavaScript unexpectedly enabled for the composition area
CVE-2021-43536: Mozilla: URL leakage when navigating while executing asynchronous function
CVE-2021-43537: Mozilla: Heap buffer overflow when using structured clone
CVE-2021-43538: Mozilla: Missing fullscreen and pointer lock notification when requesting both
CVE-2021-43539: Mozilla: GC rooting failure when calling wasm instance methods
CVE-2021-43541: Mozilla: External protocol handler parameters were unescaped
CVE-2021-43542: Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler
CVE-2021-43543: Mozilla: Bypass of CSP sandbox directive when embedding
CVE-2021-43545: Mozilla: Denial of Service when using the Location API in a loop
CVE-2021-43546: Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed

3 years ago

Red Hat Security Data

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Issued:

2021-12-09

Updated:

2021-12-09

RHSA-2021:5046 - Security Advisory

Overview
Updated Packages

Synopsis

Important: thunderbird security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 7.

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.

Description

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 91.4.0.

Security Fix(es):

Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4 (BZ#2030116)
Mozilla: URL leakage when navigating while executing asynchronous function (CVE-2021-43536)
Mozilla: Heap buffer overflow when using structured clone (CVE-2021-43537)
Mozilla: Missing fullscreen and pointer lock notification when requesting both (CVE-2021-43538)
Mozilla: GC rooting failure when calling wasm instance methods (CVE-2021-43539)
Mozilla: External protocol handler parameters were unescaped (CVE-2021-43541)
Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler (CVE-2021-43542)
Mozilla: Bypass of CSP sandbox directive when embedding (CVE-2021-43543)
Mozilla: JavaScript unexpectedly enabled for the composition area (CVE-2021-43528)
Mozilla: Denial of Service when using the Location API in a loop (CVE-2021-43545)
Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed (CVE-2021-43546)

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.

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.

Affected Products

Red Hat Enterprise Linux Server 7 x86_64
Red Hat Enterprise Linux Workstation 7 x86_64
Red Hat Enterprise Linux Desktop 7 x86_64
Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

BZ - 2030105 - CVE-2021-43536 Mozilla: URL leakage when navigating while executing asynchronous function
BZ - 2030106 - CVE-2021-43537 Mozilla: Heap buffer overflow when using structured clone
BZ - 2030109 - CVE-2021-43538 Mozilla: Missing fullscreen and pointer lock notification when requesting both
BZ - 2030110 - CVE-2021-43539 Mozilla: GC rooting failure when calling wasm instance methods
BZ - 2030111 - CVE-2021-43541 Mozilla: External protocol handler parameters were unescaped
BZ - 2030112 - CVE-2021-43542 Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler
BZ - 2030113 - CVE-2021-43543 Mozilla: Bypass of CSP sandbox directive when embedding
BZ - 2030114 - CVE-2021-43545 Mozilla: Denial of Service when using the Location API in a loop
BZ - 2030115 - CVE-2021-43546 Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed
BZ - 2030116 - Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4
BZ - 2030137 - CVE-2021-43528 Mozilla: JavaScript unexpectedly enabled for the composition area