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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: firefox security update
Advisory ID:       RHSA-2022:0126-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:0126
Issue date:        2022-01-12
CVE Names:         CVE-2021-4140 CVE-2022-22737 CVE-2022-22738 
                   CVE-2022-22739 CVE-2022-22740 CVE-2022-22741 
                   CVE-2022-22742 CVE-2022-22743 CVE-2022-22745 
                   CVE-2022-22747 CVE-2022-22748 CVE-2022-22751 
=====================================================================

1. Summary:

An update for firefox is now available for Red Hat Enterprise Linux 8.4
Extended Update Support.

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream EUS (v.8.4) - aarch64, ppc64le, s390x,
 x86_64

3. Description:

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

This update upgrades Firefox to version 91.5.0 ESR.

Security Fix(es):

* Mozilla: Iframe sandbox bypass with XSLT (CVE-2021-4140)

* Mozilla: Race condition when playing audio files (CVE-2022-22737)

* Mozilla: Heap-buffer-overflow in blendGaussianBlur (CVE-2022-22738)

* Mozilla: Use-after-free of ChannelEventQueue::mOwner (CVE-2022-22740)

* Mozilla: Browser window spoof using fullscreen mode (CVE-2022-22741)

* Mozilla: Out-of-bounds memory access when inserting text in edit mode
(CVE-2022-22742)

* Mozilla: Browser window spoof using fullscreen mode (CVE-2022-22743)

* Mozilla: Memory safety bugs fixed in Firefox 96 and Firefox ESR 91.5
(CVE-2022-22751)

* Mozilla: Leaking cross-origin URLs through securitypolicyviolation event
(CVE-2022-22745)

* Mozilla: Spoofed origin on external protocol launch dialog
(CVE-2022-22748)

* Mozilla: Missing throttling on external protocol launch dialog
(CVE-2022-22739)

* Mozilla: Crash when handling empty pkcs7 sequence (CVE-2022-22747)

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.

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

2039561 - CVE-2022-22743 Mozilla: Browser window spoof using fullscreen mode
2039563 - CVE-2022-22742 Mozilla: Out-of-bounds memory access when inserting
 text in edit mode
2039564 - CVE-2022-22741 Mozilla: Browser window spoof using fullscreen mode
2039565 - CVE-2022-22740 Mozilla: Use-after-free of ChannelEventQueue::mOwner
2039566 - CVE-2022-22738 Mozilla: Heap-buffer-overflow in blendGaussianBlur
2039567 - CVE-2022-22737 Mozilla: Race condition when playing audio files
2039568 - CVE-2021-4140 Mozilla: Iframe sandbox bypass with XSLT
2039569 - CVE-2022-22748 Mozilla: Spoofed origin on external protocol launch
 dialog
2039570 - CVE-2022-22745 Mozilla: Leaking cross-origin URLs through
 securitypolicyviolation event
2039572 - CVE-2022-22747 Mozilla: Crash when handling empty pkcs7 sequence
2039573 - CVE-2022-22739 Mozilla: Missing throttling on external protocol
 launch dialog
2039574 - CVE-2022-22751 Mozilla: Memory safety bugs fixed in Firefox 96 and
 Firefox ESR 91.5

6. Package List:

Red Hat Enterprise Linux AppStream EUS (v.8.4):

Source:
firefox-91.5.0-1.el8_4.src.rpm

aarch64:
firefox-91.5.0-1.el8_4.aarch64.rpm
firefox-debuginfo-91.5.0-1.el8_4.aarch64.rpm
firefox-debugsource-91.5.0-1.el8_4.aarch64.rpm

ppc64le:
firefox-91.5.0-1.el8_4.ppc64le.rpm
firefox-debuginfo-91.5.0-1.el8_4.ppc64le.rpm
firefox-debugsource-91.5.0-1.el8_4.ppc64le.rpm

s390x:
firefox-91.5.0-1.el8_4.s390x.rpm
firefox-debuginfo-91.5.0-1.el8_4.s390x.rpm
firefox-debugsource-91.5.0-1.el8_4.s390x.rpm

x86_64:
firefox-91.5.0-1.el8_4.x86_64.rpm
firefox-debuginfo-91.5.0-1.el8_4.x86_64.rpm
firefox-debugsource-91.5.0-1.el8_4.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/

7. References:

https://access.redhat.com/security/cve/CVE-2021-4140
https://access.redhat.com/security/cve/CVE-2022-22737
https://access.redhat.com/security/cve/CVE-2022-22738
https://access.redhat.com/security/cve/CVE-2022-22739
https://access.redhat.com/security/cve/CVE-2022-22740
https://access.redhat.com/security/cve/CVE-2022-22741
https://access.redhat.com/security/cve/CVE-2022-22742
https://access.redhat.com/security/cve/CVE-2022-22743
https://access.redhat.com/security/cve/CVE-2022-22745
https://access.redhat.com/security/cve/CVE-2022-22747
https://access.redhat.com/security/cve/CVE-2022-22748
https://access.redhat.com/security/cve/CVE-2022-22751
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2022 Red Hat, Inc.
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