[RHSA-2019:2774] thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 60.9.0.

Security Fix(es):

• Mozilla: Covert Content Attack on S/MIME encryption using a crafted multipart/alternative message (CVE-2019-11739)

• Mozilla: Memory safety bugs fixed in Firefox 69, Firefox ESR 68.1, and Firefox ESR 60.9 (CVE-2019-11740)

• Mozilla: Same-origin policy violation with SVG filters and canvas to steal cross-origin images (CVE-2019-11742)

• Mozilla: XSS by breaking out of title and textarea elements using innerHTML (CVE-2019-11744)

• Mozilla: Use-after-free while manipulating video (CVE-2019-11746)

• Mozilla: Use-after-free while extracting a key value in IndexedDB (CVE-2019-11752)

• Mozilla: Cross-origin access to unload event attributes (CVE-2019-11743)

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.