RLSA-2021:3838

RLSA-2021:3838 · Important: thunderbird security update

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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) 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.

CVSS 9.8 · Kritisch · Korrektur verfügbar

Veröffentlicht

2021-10-13T09:04:24Z

Aktualisiert

2026-02-04T11:45:10.268102Z

Technologie-Stack: system

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