(RHSA-2020:4156) Important: thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 78.3.1.

Security Fix(es):

• Mozilla: Memory safety bugs fixed in Firefox 81 and Firefox ESR 78.3 (CVE-2020-15673)

• Mozilla: XSS when pasting attacker-controlled data into a contenteditable element (CVE-2020-15676)

• Mozilla: Download origin spoofing via redirect (CVE-2020-15677)

• Mozilla: When recursing through layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free scenario (CVE-2020-15678)

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.