PH38815: DFHPI0002 SEVERE ERROR CODE 0508 IN MODULE DFHPITH WHEN RECEIVING HTTP INPUT WITH NO VALUE SET FOR CONTENT TYPE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• You are running CICS 5.6 and receive the following error
  and a dump is produced:
  
  DFHPI0002 APPLID A severe error (code X'0508') has occurred in
            module DFHPITH.
  DFHDU0201 APPLID ABOUT TO TAKE SDUMP. DUMPCODE: PI0002
  
  Reviewing the dump, here is the exception trace entry:
  
  PI 0508 PITH *EXC* - WB_INBOUND_REQUEST_FAILURE -
                       FUNCTION(SEND_RESPONSE)
  
  The task was attached due to receiving an inbound request
  that appears to have come from the Postman test tool.  The start
  of the HTTP request looks like the following:
  
    POST /cics/xxxxxxx/yyyyyyyy HTTP/1.1
    Content-Type:
    cache-control: no-cache
    Postman-Token: nnanannn-aann-nnan-nnnn-ananananan96
    User-Agent: PostmanRuntime/7
  
  The user has deliberately set the Content-Type HTTP header to be
  sent without a value.  This causes CICS to try and send a 415
  Unsupported Media Type error response back to the client, but
  DFHPITH doesn't set things up correctly, leading to the
  DFHPI0002 error message and dump.
  
  Additional symptoms: KIXREVJRL
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: Message DFHPI0002 and system dump when  *
  *                      receiving a web service request with no *
  *                      value set for the Content-Type HTTP     *
  *                      header.                                 *
  ****************************************************************
  A web service request is sent to CICS that contains an empty
  Content-Type header. This causes DFHPITH to try and send a 415
  Unsupported Media Type error response back to the client via
  DFHWBAP, supplying the original empty Content-Type value as the
  mediatype parameter. DFHWBAP validates the mediatype and returns
  WBAP_EXCEPTION / WBAP_INVALID_MEDIATYPE. DFHPITH does not have
  any code to handle this response so the default severe error
  handling takes place.  That results in message DFHPI0002
  being issued and a system dump taken.
  

Problem conclusion

• DFHPITH has been changed so that when it issues the DFHWBAP
  SEND_RESPONSE, it doesn't pass the empty Content-Type.
  

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:

  UI77163

Modules/Macros

• DFHPITH
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R300 PSY UI77163

     UP21/09/17 P F109

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.