RHSA-2020:2050 — Security Advisory
Red Hat Security Advisory: thunderbird security update
Severity
CriticalRed Hat Product Security
Products
Official CSAF product identity
Published · May 11, 2020
Updated · November 2, 2026
Topic
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 Critical. 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.
Description
Mozilla Thunderbird is a standalone mail and newsgroup client.
This update upgrades Thunderbird to version 68.8.0.
Security Fix(es):
-
Mozilla: Use-after-free during worker shutdown (CVE-2020-12387)
-
Mozilla: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8 (CVE-2020-12395)
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usrsctp: Buffer overflow in AUTH chunk input validation (CVE-2020-6831)
-
Mozilla: Arbitrary local file access with 'Copy as cURL' (CVE-2020-12392)
-
Mozilla: Sender Email Address Spoofing using encoded Unicode characters (CVE-2020-12397)
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.