[jira] [Created] (HADOOP-11087) cancel delegation token succeeds if actual token is a substring of passed token

[Gregory Chanan (JIRA)]

Gregory Chanan created HADOOP-11087:
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             Summary: cancel delegation token succeeds if actual token is a 
substring of passed token
                 Key: HADOOP-11087
                 URL: https://issues.apache.org/jira/browse/HADOOP-11087
             Project: Hadoop Common
          Issue Type: Bug
          Components: security
    Affects Versions: 2.6.0
            Reporter: Gregory Chanan


I'm using the DelegationTokenAuthenticationFilter.  If I get "token" via 
op=GETDELEGATIONTOKEN and pass "tokenBOGUS" via op=CANCELDELEGATIONTOKEN, the 
token is successfully cancelled.  It looks like this is because 
Token.readFields knows the lengths of the token and just crops it.



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