| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 98.0 | 98.0 |
| firefox esr | < 91.7 | 91.7 |
| thunderbird | < 91.7 | 91.7 |
When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.
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