Important: firefox security update

Topic

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.

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.

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 - Extended Update Support 9.0 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.0 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.0 ppc64le
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.0 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.0 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.0 x86_64
• Red Hat Enterprise Linux Server for ARM 64 - 4 years of updates 9.0 aarch64
• Red Hat Enterprise Linux Server for IBM z Systems - 4 years of updates 9.0 s390x

Fixes

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

CVEs

• CVE-2023-3600
• CVE-2023-5169
• CVE-2023-5171
• CVE-2023-5176
• CVE-2023-5217

References

• https://access.redhat.com/security/updates/classification/#important