PM08129: HTTP SERVER ABENDS WITH A PROTECTION EXCEPTION (0C4) IN THE PLUG-IN DUE TO AN OVERLAY IN HEAP STORAGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The problem occurs when a client submits a request with a header
  length of exactly 16060 bytes.
  The plug-in has a buffer of exactly that size and when it tries
  to get one more item into that buffer, the length goes negative
  and that leads to the overlay.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Any user of the WebSphere Application        *
  *                 Server for z/OS Plugin that runs with        *
  *                 the HTTP Server for z/OS v5.3 who may        *
  *                 have request headers greater than            *
  *                 16,159 bytes.                                *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Customer encounters an ABEND0C4 when    *
  *                      a request header of 16,159+ bytes is    *
  *                      passed from the HTTP Server for z/OS    *
  *                      v5.3.                                   *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A request header of 16,159+ bytes causes a negative number to
  put into a counter when that counter is used later a memory
  overlay occurs which causes the ABEND0C4.
  

Problem conclusion

• Changed the code of the WebSphere Application Server for z/OS
  Plugin that runs with the HTTP Server for z/OS v5.3 so that
  request headers of 16,159+ bytes are handled correctly.
  
  APAR PM08129 is currently targeted for inclusion in Service
  Level (Fix Pack) 7.0.0.9 of WebSphere Application Server V7.0.
  
  Please refer to URL:
  //www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
  for Fix Pack availability.
  

Temporary fix

Comments

APAR Information

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

  PK93857

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

Modules/Macros

• BBGUBINF BBOUBINF
  

Fix information

• Fixed component name

  WEBSPHERE FOR Z

• Fixed component ID

  5655I3500

Applicable component levels

• R700 PSY UK55155

     UP10/03/26 P F003

Fix is available

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