RHSA-2020:5235 — Security Advisory

An update for thunderbird is now available for Red Hat Enterprise Linux 7.

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 78.5.0.

Security Fix(es):

• Mozilla: Parsing mismatches could confuse and bypass security sanitizer for chrome privileged code (CVE-2020-26951)

• Mozilla: Memory safety bugs fixed in Firefox 83 and Firefox ESR 78.5 (CVE-2020-26968)

• Mozilla: Variable time processing of cross-origin images during drawImage calls (CVE-2020-16012)

• Mozilla: Fullscreen could be enabled without displaying the security UI (CVE-2020-26953)

• Mozilla: XSS through paste (manual and clipboard API) (CVE-2020-26956)

• Mozilla: Requests intercepted through ServiceWorkers lacked MIME type restrictions (CVE-2020-26958)

• Mozilla: Use-after-free in WebRequestService (CVE-2020-26959)

• Mozilla: Potential use-after-free in uses of nsTArray (CVE-2020-26960)

• Mozilla: DoH did not filter IPv4 mapped IP Addresses (CVE-2020-26961)

• Mozilla: Software keyboards may have remembered typed passwords (CVE-2020-26965)

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.