Security Vulnerabilities fixed in thunderbird RHSA-2021:3838

Description

Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.2.0. Security Fix(es): Mozilla: Use-after-free in MessageTask (CVE-2021-38496) Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500) Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501) Mozilla: Downgrade attack on SMTP STARTTLS connections (CVE-2021-38502) rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810) Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497) Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498) Mozilla: Use-after-free in MessageTask (CVE-2021-38496) Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500) Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501) Mozilla: Downgrade attack on SMTP STARTTLS connections (CVE-2021-38502) rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810) Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497) Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498) 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. SolutionFor details on how to apply this update, which includes the changes described in this advisory, refer to:https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

Affected Applications

thunderbird

CVE References

CVE-2021-38498 CVE-2021-38497 CVE-2021-38496 CVE-2021-38502 CVE-2021-38501 CVE-2021-38500 CVE-2021-32810

Other References

https://access.redhat.com/errata/RHSA-2021:3838