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PM72139: ABEND0C4 IN DFHXSSB DURING PASSPHRASE PROCESSING

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Message DFHXS0001 reporting abend 0C4 in DFHXSSB. This occurs
    when a user supplies a password greater than 8 characters
    (passphrase) but the security manager does not have a passphrase
    defined for the user.
    Failing instruction is an EXECUTE (4470 901C) at off set X'11BA'
    into DFHXSSB at base level. The execute instruction is executing
    an MVC instruction located at offset x'28A4' (D200 6128 3004).
            MVC      @TS00001(0),@GN11491_VAL(@03_FIELD_PTR)
    .
    The length of the MVC is derived from register 7. Reg 7 was
    initially loaded with zeros (length of passphrase returned by
    the security manager (zero length due to no passphrase defined).
    The zero length is then decremented by 1 to set up for the MVC
    instruction, making it negative (X'FF'). The negative value
    is used as a very large length and causes an 0C4.
    additional symptoms:
    KIXREVSCB
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION: MSGDFHXS0001 An abend (code 0C4/AKEX)   *
    *                      has occurred at offset X'FFFF' in       *
    *                      module DFHXSPW.                         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    An EXEC CICS VERIFY PHRASE command is issued against a USERID
    which has no password phrase associated with it. DFHXSPW calls
    DFHXSSB to verify the password phrase. The security manager is
    called to retrieve the encrypted phrase for the USERID. The
    security manager returns a response which indicates that the
    length of the phrase is 0. CICS attempts to copy the encrypted
    phrase to a holding area using a length of 0. This length is
    decremented by 1 in preparation for issuing a MVC instruction.
    This means that a length of X'FF' is used which is invalid. The
    source of the MVC instruction is near the end of a page. The MVC
    instruction runs past the end of this page onto a page which
    does not exist. This causes an ABEND0C4.
    
    Additional keywords :- 0C4 S0C4 ABEND0C4 ABENDS0C4 DFHXS0001
                           XS0001
    

Problem conclusion

  • DFHXSSB has been changed to only copy an encrypted phrase when
    one exists.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PM72139

  • Reported component name

    CICS TS Z/OS V4

  • Reported component ID

    5655S9700

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-09-04

  • Closed date

    2012-10-11

  • Last modified date

    2012-11-01

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

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

    UK82598

Modules/Macros

  •    DFHXSSB
    

Fix information

  • Fixed component name

    CICS TS Z/OS V4

  • Fixed component ID

    5655S9700

Applicable component levels

  • R700 PSY UK82598

       UP12/10/19 P F210

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.

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Document Information

Modified date:
01 November 2012