RHSA-2020:4909HighCVSS 9.8

Red Hat Security Advisory: thunderbird security update

Published
November 4, 2020
Last Modified
November 12, 2026

🔗 CVE IDs covered (2)

CVE-2020-15683 →CVE-2020-15969 →

📋 Description

CVE-2020-15683 — Mozilla: Memory safety bugs fixed in Firefox 82 and Firefox ESR 78.4 CVE-2020-15969 — chromium-browser: Use after free in WebRTC

🎯 Affected products14

  • Red Hat Enterprise Linux Client (v. 7)
  • Red Hat Enterprise Linux Server Optional (v. 7)
  • Red Hat Enterprise Linux Workstation (v. 7)
  • thunderbird-0:78.4.0-1.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • thunderbird-0:78.4.0-1.el7_9.src as a component of Red Hat Enterprise Linux Client (v. 7)
  • thunderbird-0:78.4.0-1.el7_9.src as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • thunderbird-0:78.4.0-1.el7_9.src as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • thunderbird-0:78.4.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • thunderbird-0:78.4.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • thunderbird-0:78.4.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • thunderbird-debuginfo-0:78.4.0-1.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • thunderbird-debuginfo-0:78.4.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • thunderbird-debuginfo-0:78.4.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • thunderbird-debuginfo-0:78.4.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

🔗 References (5)