RHSA-2023:7504 — Security Advisory

An update for thunderbird is now available for Red Hat Enterprise Linux 8.8 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.

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.