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

Synopsis:          Important: firefox security update
Advisory ID:       RHSA-2023:5427-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:5427
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 9.0
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.9.0) - 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 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 EUS (v.9.0):

Source:
firefox-115.3.1-1.el9_0.src.rpm

aarch64:
firefox-115.3.1-1.el9_0.aarch64.rpm
firefox-debuginfo-115.3.1-1.el9_0.aarch64.rpm
firefox-debugsource-115.3.1-1.el9_0.aarch64.rpm

ppc64le:
firefox-115.3.1-1.el9_0.ppc64le.rpm
firefox-debuginfo-115.3.1-1.el9_0.ppc64le.rpm
firefox-debugsource-115.3.1-1.el9_0.ppc64le.rpm

s390x:
firefox-115.3.1-1.el9_0.s390x.rpm
firefox-debuginfo-115.3.1-1.el9_0.s390x.rpm
firefox-debugsource-115.3.1-1.el9_0.s390x.rpm

x86_64:
firefox-115.3.1-1.el9_0.x86_64.rpm
firefox-debuginfo-115.3.1-1.el9_0.x86_64.rpm
firefox-debugsource-115.3.1-1.el9_0.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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