IV78605: JAVA.LANG.NULLPOINTEREXCEPTION WHEN USING KTAB.EXE TO LIST ENTRI ES

APAR status

• Closed as program error.

Error description

• Error Message: Whenever trying to list the content of a keytab
  with the "ktab" utility, a java.lang.NullPointerException is
  thrown.
  .
  Stack Trace: Exception in thread "main"
  java.lang.NullPointerException
          at
  com.ibm.security.krb5.internal.tools.Ktab.b(Ktab.java:29)
          at
  com.ibm.security.krb5.internal.tools.Ktab.main(Ktab.java:65)
  .
  

Local fix

Problem summary

• The problem is caused by no check of null key
  

Problem conclusion

• The fix is to add null key check before retrieving information
  from the key
  The associated Austin CMVC defect is 117026
  The associated RTC PR is 101924
  The associated APAR is IV77921
  JVMs affected : Java 7.0 , Java 7.1 and Java 8.0
  The fix was delivered for Java 7.0 SR9 FP30, Java 7.1 SR3 FP30
  and Java 8.0 SR2 FP10
  The affected jar is "ibmjgssprovider.jar".
  The build level of this jar for the affected releases is
  "20151104"
  .
  This APAR will be fixed in the following Java Releases:
     7    SR9 FP30  (7.0.9.30)
     7 R1 SR3 FP30  (7.1.3.30)
     8    SR2 FP10  (8.0.2.10)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
             https://www.ibm.com/developerworks/java/jdk/
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  SECURITY

• Fixed component ID

  620700125

Applicable component levels

• R260 PSY

     UP

• R270 PSY

     UP