| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 83.0 | 83.0 |
| firefox esr | < 78.5 | 78.5 |
| thunderbird | < 78.5 | 78.5 |
Searching for a single word from the address bar caused an mDNS request to be sent on the local network searching for a hostname consisting of that string; resulting in an information leak. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
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