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.
References
DevLaTronReporter
bjorn3Remediation developer
MggMugginsRemediation reviewer
squellCoordinator
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:
"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.
References