RHSA-2020:1489HighCVSS 9.8

Red Hat Security Advisory: thunderbird security update

Published
April 16, 2020
Last Modified
November 5, 2026

🔗 CVE IDs covered (5)

CVE-2020-6819 →CVE-2020-6820 →CVE-2020-6821 →CVE-2020-6822 →CVE-2020-6825 →

📋 Description

CVE-2020-6819 — Mozilla: Use-after-free while running the nsDocShell destructor CVE-2020-6820 — Mozilla: Use-after-free when handling a ReadableStream CVE-2020-6821 — Mozilla: Uninitialized memory could be read when using the WebGL copyTexSubImage method CVE-2020-6822 — Mozilla: Out of bounds write in GMPDecodeData when processing large images CVE-2020-6825 — Mozilla: Memory safety bugs fixed in Firefox 75 and Firefox ESR 68.7

🎯 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-0:68.7.0-1.el7_8.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • thunderbird-0:68.7.0-1.el7_8.src as a component of Red Hat Enterprise Linux Client (v. 7)
  • thunderbird-0:68.7.0-1.el7_8.src as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • thunderbird-0:68.7.0-1.el7_8.src as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • thunderbird-0:68.7.0-1.el7_8.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • thunderbird-0:68.7.0-1.el7_8.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • thunderbird-0:68.7.0-1.el7_8.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • thunderbird-debuginfo-0:68.7.0-1.el7_8.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • thunderbird-debuginfo-0:68.7.0-1.el7_8.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • thunderbird-debuginfo-0:68.7.0-1.el7_8.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • thunderbird-debuginfo-0:68.7.0-1.el7_8.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 (9)