| Description: | Mozilla Thunderbird is a standalone mail and newsgroup client.
This update upgrades Thunderbird to version 78.7.0.
Security Fix(es):
Mozilla: Cross-origin information leakage via redirected PDF requests (CVE-2021-23953)
Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements (CVE-2021-23954)
Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7 (CVE-2021-23964)
Mozilla: IMAP Response Injection when using STARTTLS (CVE-2020-15685)
Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been (CVE-2020-26976)
Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC (CVE-2021-23960)
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.
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