GHSA-c978-wq47-pvvw

### Summary If a user begins entering a password but does not press return for an extended period, a password timeout may occur. When this happens, the keystrokes that were entered are echoed back to the console.

### Example Using sudo-rs: ``` geiger@cerberus:~$ sudo -s [sudo: authenticate] Password: sudo-rs: timed out geiger@cerberus:~$ testtesttest ```

"testtesttest" was entered at the password prompt but not confirmed by pressing return and then waiting for the timeout.

### Impact This could reveal partial password information, possibly exposing history files when not carefully handled by the user and on screen, usable for Social Engineering or Pass-By attacks.

### Versions affected Passwords timeouts were added in sudo-rs 0.2.7 (with a default set to 5 minutes).

### Credits This issue was discovered and reported by @DevLaTron.