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

Synopsis:          Important: firefox security update
Advisory ID:       RHSA-2023:5426-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:5426
Issue date:        2023-10-04
CVE Names:         CVE-2023-3600 CVE-2023-5169 CVE-2023-5171 
                   CVE-2023-5176 CVE-2023-5217 
=====================================================================

1. Summary:

An update for firefox is now available for Red Hat Enterprise Linux 8.2
Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications
Update Service, and Red Hat Enterprise Linux 8.2 Update Services for SAP
Solutions.

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 AUS (v. 8.2) - x86_64
Red Hat Enterprise Linux AppStream E4S (v. 8.2) - ppc64le, x86_64
Red Hat Enterprise Linux AppStream TUS (v. 8.2) - 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 115.3.1 ESR.

Security Fix(es):

* firefox: use-after-free in workers (CVE-2023-3600)

* Mozilla: Out-of-bounds write in PathOps (CVE-2023-5169)

* Mozilla: Use-after-free in Ion Compiler (CVE-2023-5171)

* Mozilla: Memory safety bugs fixed in Firefox 118, Firefox ESR 115.3, and
Thunderbird 115.3 (CVE-2023-5176)

* libvpx: Heap buffer overflow in vp8 encoding in libvpx (CVE-2023-5217)

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/):

2222652 - CVE-2023-3600 firefox: use-after-free in workers
2240893 - CVE-2023-5169 Mozilla: Out-of-bounds write in PathOps
2240894 - CVE-2023-5171 Mozilla: Use-after-free in Ion Compiler
2240896 - CVE-2023-5176 Mozilla: Memory safety bugs fixed in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3
2241191 - CVE-2023-5217 libvpx: Heap buffer overflow in vp8 encoding in libvpx

6. Package List:

Red Hat Enterprise Linux AppStream AUS (v. 8.2):

Source:
firefox-115.3.1-1.el8_2.src.rpm

x86_64:
firefox-115.3.1-1.el8_2.x86_64.rpm
firefox-debuginfo-115.3.1-1.el8_2.x86_64.rpm
firefox-debugsource-115.3.1-1.el8_2.x86_64.rpm

Red Hat Enterprise Linux AppStream E4S (v. 8.2):

Source:
firefox-115.3.1-1.el8_2.src.rpm

ppc64le:
firefox-115.3.1-1.el8_2.ppc64le.rpm
firefox-debuginfo-115.3.1-1.el8_2.ppc64le.rpm
firefox-debugsource-115.3.1-1.el8_2.ppc64le.rpm

x86_64:
firefox-115.3.1-1.el8_2.x86_64.rpm
firefox-debuginfo-115.3.1-1.el8_2.x86_64.rpm
firefox-debugsource-115.3.1-1.el8_2.x86_64.rpm

Red Hat Enterprise Linux AppStream TUS (v. 8.2):

Source:
firefox-115.3.1-1.el8_2.src.rpm

x86_64:
firefox-115.3.1-1.el8_2.x86_64.rpm
firefox-debuginfo-115.3.1-1.el8_2.x86_64.rpm
firefox-debugsource-115.3.1-1.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/

7. References:

https://access.redhat.com/security/cve/CVE-2023-3600
https://access.redhat.com/security/cve/CVE-2023-5169
https://access.redhat.com/security/cve/CVE-2023-5171
https://access.redhat.com/security/cve/CVE-2023-5176
https://access.redhat.com/security/cve/CVE-2023-5217
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2023 Red Hat, Inc.
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