PM64549: PERFORMING EXEC CICS WEB READ HTTPHEADER RESULTS IN LENGERR AND WORKING STORAGE BEING OVERLAID

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Using 'EXEC CICS WEB READ HTTPHEADER' with a VALUELEN that is
  less than the size of the data will return LENGERR, but the
  data moved to the buffer will not be truncated, resuting in an
  overlay.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Storage overlay using EXEC CICS WEB     *
  *                      READ HTTPHEADER with the VALUE option.  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When using the command EXEC CICS WEB READ HTTPHEADER, a storage
  overlay can occur if the length of the httpheader is larger than
  the VALUELENGTH supplied by the application. The cause is that
  the wrong length is used when copying data to the application's
  buffer. Instead of using the VALUELENGTH specified by the
  application, the length of the actual data is used. The command
  correctly returns a LENGERR response.
  
  Additional Keywords:0C4 ABEND0C4 S0C4 violation abendAEIV AEIV
                      PQ82199
  

Problem conclusion

• DFHWBAP has been changed to ensure that data is not written
  beyond the end of the buffer provided by the application.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

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

  UK79112

Modules/Macros

•    DESWBAP  DESWBDM  DESWBRQ  DESWBSR  DESWBXM
  DFHSOCKI DFHWBAP  DFHWBAPF DFHWBDM  DFHWBRQS DFHWBSR  DFHWBXM
  

Fix information

• Fixed component name

  CICSTS FOR VSE

• Fixed component ID

  564805400

Applicable component levels

• RB0P PSY UK79112

     UP12/06/13 P E512

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.