[jira] [Created] (HADOOP-14155) KerberosName.replaceParameters() may throw java.lang.ArrayIndexOutOfBoundsException

["Dazhuang Su (JIRA)" <ji...@apache.org>]

Dazhuang Su created HADOOP-14155:
------------------------------------

             Summary: KerberosName.replaceParameters() may throw java.lang.ArrayIndexOutOfBoundsException
                 Key: HADOOP-14155
                 URL: https://issues.apache.org/jira/browse/HADOOP-14155
             Project: Hadoop Common
          Issue Type: Bug
          Components: security
    Affects Versions: 2.7.3
            Reporter: Dazhuang Su
            Priority: Minor


In core-site.xml:
<property>
  <name>hadoop.security.auth_to_local</name>
  <value>
    RULE:[1:$1](.*)
    RULE:[2:$1$2](.*)
  </value>
</property>

KerberosName.replaceParameters() replaces the numbered parameters of the form $n where n is from 1 to the length of params. Normal text is copied directly and $n is replaced by the corresponding parameter.
However, when RULE is configued as the following way (although it's wrong)

RULE:[1:$1$2](.*)

Then run command

hadoop org.apache.hadoop.security.HadoopKerberosName testprinc@TESTREALM.COM

It will throw ArrayIndexOutOfBoundsException instead of BadFormatString exception.



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