Thunderbird versions prior to 91.3.0 are vulnerable to the heap overflow described in CVE-2021-43527 when processing S/MIME messages. Thunderbird versions 91.3.0 and later will not call the vulnerable code when processing S/MIME messages that contain certificates with DER-encoded DSA or RSA-PSS signatures.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade thunderbird-debuginfo | Sep 30, 2022 | Sep 30, 2022 |
| Centos_linux | — | Upgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsource | May 26, 2022 | Nov 4, 2021 |
| Debian | — | Upgrade thunderbird | Jan 4, 2022 | Jan 4, 2022 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird.Upgrade mail-client/thunderbird-bin. | Aug 11, 2022 | Aug 10, 2022 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 91.3Upgrade to the latest version of Mozilla Thunderbird | Jan 24, 2023 | Nov 3, 2021 |
| Redhat_linux | — | Upgrade thunderbird-debuginfoNo solution existsUpgrade thunderbirdUpgrade thunderbird-debugsource | May 24, 2022 | Nov 4, 2021 |
| Rocky_linux | — | Upgrade thunderbird-debugsourceUpgrade thunderbirdUpgrade thunderbird-debuginfo | Mar 12, 2024 | Feb 16, 2023 |
| Ubuntu | — | Upgrade thunderbird | Nov 19, 2024 | Feb 16, 2023 |
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