Attila Magyar created AMBARI-21680:
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Summary: Prevent users from authenticating if they exceed a
configured number of login failures
Key: AMBARI-21680
URL: https://issues.apache.org/jira/browse/AMBARI-21680
Project: Ambari
Issue Type: Bug
Components: ambari-server
Affects Versions: 3.0.0
Reporter: Attila Magyar
Assignee: Attila Magyar
Fix For: 3.0.0
Prevent users from authenticating if they exceed a configured number of login
failures, which is set as a configuration in the ambari.properties file -
authentication.max.failures.
After a users successfully authenticates, check the value of
org.apache.ambari.server.orm.entities.UserEntity#getConsecutiveFailures. If it
exceeds the value set in authentication.max.failures, then fail authentication.
Else allow authentication to proceed.
If failing authentication due to being "locked out", do not indicate this to
the user; however an Ambari server log message will be useful. The normal
"authentication failed" message should be returned as to not give away any
information about a user's authentication. If a special "locked out" message is
shown, then a hacker will be able to attempt a brute force attack on a user's
account since the returned error message will be different if they eventually
succeed in guessing the password.
To "unlock" the user, a user administrator (a user with the AMBARI.MANAGE_USERS
authorization) needs to reset the user's consecutive failure count to 0.
By default the authentication.max.failures should be 10; however 0 should
indicate that no lockout is desired.
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