RHSA-2023:7570 — 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 115.5.0.

Security Fix(es):

• Mozilla: Out-of-bound memory access in WebGL2 blitFramebuffer (CVE-2023-6204)

• Mozilla: Use-after-free in MessagePort::Entangled (CVE-2023-6205)

• Mozilla: Clickjacking permission prompts using the fullscreen transition (CVE-2023-6206)

• Mozilla: Use-after-free in ReadableByteStreamQueueEntry::Buffer (CVE-2023-6207)

• Mozilla: Memory safety bugs fixed in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5 (CVE-2023-6212)

• Mozilla: Using Selection API would copy contents into X11 primary selection. (CVE-2023-6208)

• Mozilla: Incorrect parsing of relative URLs starting with "///" (CVE-2023-6209)

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.