What is RHSA-2021:0657?

RHSA-2021:0657 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: thunderbird security update

Which CVE IDs does RHSA-2021:0657 cover?

RHSA-2021:0657 covers the following CVE IDs: CVE-2021-23968, CVE-2021-23969, CVE-2021-23973, CVE-2021-23978. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2021:0657?

RHSA-2021:0657 has a CVSS v3 base score of 8.8, published by Red Hat Product Security.

Which products are affected by RHSA-2021:0657?

RHSA-2021:0657 affects 11 products, including: Red Hat Enterprise Linux AppStream (v. 8); thunderbird-0:78.8.0-1.el8_3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8); thunderbird-0:78.8.0-1.el8_3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8); thunderbird-0:78.8.0-1.el8_3.src as a component of Red Hat Enterprise Linux AppStream (v. 8); thunderbird-0:78.8.0-1.el8_3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8); and others — see the full list on the advisory page.

RHSA-2021:0657HighCVSS 8.8

Red Hat Security Advisory: thunderbird security update

Vendor

Red Hat Product Security

Published

February 24, 2021

Last Modified

November 6, 2026

🔗 CVE IDs covered (4)

CVE-2021-23968 →CVE-2021-23969 →CVE-2021-23973 →CVE-2021-23978 →

📋 Description

CVE-2021-23968 — Mozilla: Content Security Policy violation report could have contained the destination of a redirect CVE-2021-23969 — Mozilla: Content Security Policy violation report could have contained the destination of a redirect CVE-2021-23973 — Mozilla: MediaError message property could have leaked information about cross-origin resources CVE-2021-23978 — Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8

🎯 Affected products11

Red Hat Enterprise Linux AppStream (v. 8)
thunderbird-0:78.8.0-1.el8_3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
thunderbird-0:78.8.0-1.el8_3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
thunderbird-0:78.8.0-1.el8_3.src as a component of Red Hat Enterprise Linux AppStream (v. 8)
thunderbird-0:78.8.0-1.el8_3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
thunderbird-debuginfo-0:78.8.0-1.el8_3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
thunderbird-debuginfo-0:78.8.0-1.el8_3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
thunderbird-debuginfo-0:78.8.0-1.el8_3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
thunderbird-debugsource-0:78.8.0-1.el8_3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
thunderbird-debugsource-0:78.8.0-1.el8_3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
thunderbird-debugsource-0:78.8.0-1.el8_3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)

✅ 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.

🔗 CVE IDs covered (4)

📋 Description

🎯 Affected products11

✅ Remediation

🔗 References (7)