A crafted S/MIME message consisting of an inner encryption layer and an outer SignedData layer was shown as having a valid digital signature, although the signer might have had no access to the contents of the encrypted message, and might have stripped a different signature from the encrypted message. Previous versions had only suppressed showing a digital signature for messages with an outer multipart/signed layer. This vulnerability affects Thunderbird < 68.1.1.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade thunderbird | Nov 19, 2019 | Sep 27, 2019 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 68.1.1 | Sep 27, 2019 | Sep 25, 2019 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Sep 27, 2019 |
| Suse | — | Upgrade MozillaThunderbird-buildsymbolsUpgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbird-translations-otherUpgrade MozillaThunderbirdUpgrade enigmail | Oct 8, 2019 | Sep 27, 2019 |
| Ubuntu | — | Upgrade thunderbird | Nov 27, 2019 | Sep 27, 2019 |
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