Backport: mfa: prevent the user from deleting the last MFA device #6625
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* mfa: prevent the user from deleting the last MFA device When the cluster requires MFA for all users (when `second_factor` is `on`, `u2f` or `totp`, and not `off` or `optional`), users could lock themselves out by deleting the last device. Prevent that. Fixes #5803 * Make last MFA device deletion check more strict Separate by the type of the device and which type the cluster enforces.
r0mant
approved these changes
Apr 28, 2021
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Backport of #6585 into v6
When the cluster requires MFA for all users (when
second_factorison,u2fortotp, and notofforoptional), users could lockthemselves out by deleting the last device. Prevent that.
Fixes #5803
Separate by the type of the device and which type the cluster enforces.