RHSA-2024:0030 — Security Advisory

An update for thunderbird is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and Red Hat Enterprise Linux 8.2 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 115.6.0.

Security Fix(es):

• Mozilla: Heap-buffer-overflow affecting WebGL <code>DrawElementsInstanced</code> method with Mesa VM driver (CVE-2023-6856)

• Mozilla: Memory safety bugs fixed in Firefox 121, Firefox ESR 115.6, and Thunderbird 115.6 (CVE-2023-6864)

• Mozilla: S/MIME signature accepted despite mismatching message date (CVE-2023-50761)

• Mozilla: Truncated signed text was shown with a valid OpenPGP signature (CVE-2023-50762)

• Mozilla: Symlinks may resolve to smaller than expected buffers (CVE-2023-6857)

• Mozilla: Heap buffer overflow in <code>nsTextFragment</code> (CVE-2023-6858)

• Mozilla: Use-after-free in PR_GetIdentitiesLayer (CVE-2023-6859)

• Mozilla: Potential sandbox escape due to <code>VideoBridge</code> lack of texture validation (CVE-2023-6860)

• Mozilla: Heap buffer overflow affected <code>nsWindow::PickerOpen(void)</code> in headless mode (CVE-2023-6861)

• Mozilla: Use-after-free in <code>nsDNSService</code> (CVE-2023-6862)

• Mozilla: Undefined behavior in <code>ShutdownObserver()</code> (CVE-2023-6863)

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.