RHSA-2021:5013: Red Hat Security Advisory: firefox security update

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Issued:

2021-12-08

Updated:

2021-12-08

RHSA-2021:5013 - Security Advisory

• Overview
• Updated Packages

Synopsis

Important: firefox 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 firefox is now available for Red Hat Enterprise Linux 8.

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 Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 91.4.0 ESR.

Security Fix(es):

• Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4
• 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: 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

After installing the update, Firefox must be restarted for the changes to take effect.

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64

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

CVEs

• CVE-2021-43536
• CVE-2021-43537
• CVE-2021-43538
• CVE-2021-43539
• CVE-2021-43541
• CVE-2021-43542
• CVE-2021-43543
• CVE-2021-43545
• CVE-2021-43546

Red Hat Enterprise Linux for x86_64 8

SRPM

firefox-91.4.0-1.el8_5.src.rpm

SHA-256: 9887fd5552c2e14733f8e1bf950abb8141590c3ea6190983106d0edeb917f9e9

x86_64

firefox-91.4.0-1.el8_5.x86_64.rpm

SHA-256: b8c1b6520c42d5dc2537b13817911872f6504de072b57c655ac095d33334f785

firefox-debuginfo-91.4.0-1.el8_5.x86_64.rpm

SHA-256: 831a4c87d54a037dbb29b4af30b163c6281f8884352adaf17fb9814791b0ef91

firefox-debugsource-91.4.0-1.el8_5.x86_64.rpm

SHA-256: ae708e775a35291419731f287cee68b663f9f56e977e3dadf8adc49fccb75522

Red Hat Enterprise Linux for IBM z Systems 8

SRPM

firefox-91.4.0-1.el8_5.src.rpm

SHA-256: 9887fd5552c2e14733f8e1bf950abb8141590c3ea6190983106d0edeb917f9e9

s390x

firefox-91.4.0-1.el8_5.s390x.rpm

SHA-256: 690f97af016a0c0576b52bb875e87c21ad164263578e18cf5559100f64f64201

firefox-debuginfo-91.4.0-1.el8_5.s390x.rpm

SHA-256: 50a1d172cc2e4df83558ab8c688742ad75b4be1a6a252d2cf25ee3814eedf1ed

firefox-debugsource-91.4.0-1.el8_5.s390x.rpm

SHA-256: b8589319624d4c651b3ea8cd7ad2868179f1afe8384e6fbed33129bc3a618e6e

Red Hat Enterprise Linux for Power, little endian 8

SRPM

firefox-91.4.0-1.el8_5.src.rpm

SHA-256: 9887fd5552c2e14733f8e1bf950abb8141590c3ea6190983106d0edeb917f9e9

ppc64le

firefox-91.4.0-1.el8_5.ppc64le.rpm

SHA-256: f40d0a7ec0966eccb104b972d8af496f925c52ac70b5a3112e34e666018b56ea

firefox-debuginfo-91.4.0-1.el8_5.ppc64le.rpm

SHA-256: ed59fcf5c37ab6b94b1abcc2812cfabebe8d1ef17e336471281a33d8dd6423da

firefox-debugsource-91.4.0-1.el8_5.ppc64le.rpm

SHA-256: bfff14eabee6ea337a58a87d5789bec5bb4667e3af547962a4e68de475870b96

Red Hat Enterprise Linux for ARM 64 8

SRPM

firefox-91.4.0-1.el8_5.src.rpm

SHA-256: 9887fd5552c2e14733f8e1bf950abb8141590c3ea6190983106d0edeb917f9e9

aarch64

firefox-91.4.0-1.el8_5.aarch64.rpm

SHA-256: 175badef5822053b6a6a73d5f2781f6506120f126e5b29ff47b1805124209799

firefox-debuginfo-91.4.0-1.el8_5.aarch64.rpm

SHA-256: 28cf40fd03231298aee55cd8eaa6176a1fb0b47565609dc43043de7fba908260

firefox-debugsource-91.4.0-1.el8_5.aarch64.rpm

SHA-256: 05fbeb5a144bf6ad7cfda0cf8cbe5a02122b741d58ae4e9a1a3ae5b4e15241ce

The Red Hat security contact is [email protected]. More contact details at https://access.redhat.com/security/team/contact/.