RHSA-2021:2881: Red Hat Security Advisory: thunderbird security update

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 78.12.0. Security Fix(es):

• Mozilla: IMAP server responses sent by a MITM prior to STARTTLS could be processed (CVE-2021-29969)
• Mozilla: Use-after-free in accessibility features of a document (CVE-2021-29970)
• Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12 (CVE-2021-29976)
• chromium-browser: Out of bounds write in ANGLE (CVE-2021-30547) 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. Related CVEs:
• CVE-2021-29969: Mozilla: IMAP server responses sent by a MITM prior to STARTTLS could be processed
• CVE-2021-29970: Mozilla: Use-after-free in accessibility features of a document
• CVE-2021-29976: Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12
• CVE-2021-30547: chromium-browser: Out of bounds write in ANGLE