Jeff Jirsa created CASSANDRA-13626:
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             Summary: Check hashed password matches expected bcrypt hash format 
before checking
                 Key: CASSANDRA-13626
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13626
             Project: Cassandra
          Issue Type: Bug
          Components: Auth
            Reporter: Jeff Jirsa
            Assignee: Jeff Jirsa
            Priority: Minor
             Fix For: 3.0.x, 3.11.x, 4.x


We use {{Bcrypt.checkpw}} in the auth subsystem, but do a reasonably poor job 
of guaranteeing that the hashed password we send to it is really a hashed 
password, and {{checkpw}} does an even worse job of failing nicely. We should 
at least sanity check the hash complies with the expected format prior to 
validating.




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