| Package | Affected versions | Patched versions |
|---|---|---|
| two-factor webauthn | ≥ 1.0.0, < 1.4.2≥ 2.0.0, < 2.4.1 | 1.4.22.4.1 |
Nextcloud Twofactor WebAuthn is the WebAuthn Two-Factor Provider for Nextcloud. Prior to 1.4.2 and 2.4.1, a missing ownership check allowed an attack to take-away a 2FA webauthn device when correctly guessing a 80-128 character long random string of letters, numbers and symbols. The victim would then be prompted to register a new device on the next login. The attacker can not authenticate as the victim. This vulnerability is fixed in 1.4.2 and 2.4.1.
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