RHSA-2023:6196 — Security Advisory

An update for thunderbird is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 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.

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 115.4.1.

Security Fix(es):

• Mozilla: Queued up rendering could have allowed websites to clickjack (CVE-2023-5721)

• Mozilla: Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4 (CVE-2023-5730)

• libvpx: crash related to VP9 encoding in libvpx (CVE-2023-44488)

• Mozilla: Large WebGL draw could have led to a crash (CVE-2023-5724)

• Mozilla: WebExtensions could open arbitrary URLs (CVE-2023-5725)

• Mozilla: Improper object tracking during GC in the JavaScript engine could have led to a crash. (CVE-2023-5728)

• Mozilla: Address bar spoofing via bidirectional characters (CVE-2023-5732)

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.