IBM Support

IT11318: WMQ V8: IF A PASSWORD IS NOT PROVIDED WHEN USING CONNAUTH, MQ BASE JAVA APPLICATIONS CAN STILL CONNECT TO A QUEUE MAN

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APAR status

  • Closed as program error.

Error description

  • If CONNAUTH is enabled on a queue manager and the CHCKCLNT
    parameter is set to OPTIONAL in AUTHINFO definition and if a
    client application using MQ base Java classes provides a userid
    without a password, it connects successfully.
    
    The behaviour is different when using other APIs, such as JMS or
    the native MQ API which fail to connect.
    
    So for MQ base Java applications if a userid is provided
    without password, then the connection should also fail.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    This issue affects users of the WebSphere MQ V8 Classes for Java
    using the MQCSP authentication mode with an application which
    specifies a user id, but no password and which connects to a V8
    queue manager which is using the CONNAUTH feature to
    authenticate passwords.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    A WebSphere MQ V8 Classes for Java application was developed to
    connect to a V8 queue manager using MQCSP authentication mode.
    
    The application specified a user Id for the connection (either
    by setting the 'userID' field on an MQEnvironment object, or by
    setting the CMQC.USER_ID_PROPERTY in a Hashtable which was
    subsequently passed to the MQQueueManager constructor) but no
    password was specified.
    
    The application set
    "MQConstants.USE_MQCSP_AUTHENTICATION_PROPERTY" to "true" or
    specified the Java system property:
    "com.ibm.mq.cfg.jmqi.useMQCSPauthentication=Y"
    
    When the application attempted to connect the MQ Classes for
    Java should have sent a MQCSP structure to the queue manager
    containing a user Id (with no password).  The queue manager
    should have rejected this connection attempt because the
    password was invalid.  Instead the MQ Classes for Java did not
    send the MQCSP structure so the queue manager allowed the
    connection to succeed.
    

Problem conclusion

  • The MQ Classes for Java have been updated to ensure that when a
    user Id is specified and the application is using MQCSP
    authentication mode then the MQCSP structure will be sent to the
    queue manager regardless of whether the password is provided or
    not.
    
    As a result if the queue manager is configured to use connection
    authentication then it will validate the user Id and password
    when a connection attempt is made and reject the connection if
    no password is provided.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.5
    
    The latest available maintenance can be obtained from
    'WebSphere MQ Recommended Fixes'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
    
    If the maintenance level is not yet available information on
    its planned availability can be found in 'WebSphere MQ
    Planned Maintenance Release Dates'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
    ---------------------------------------------------------------
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT11318

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7251

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-09-18

  • Closed date

    2016-01-11

  • Last modified date

    2016-01-11

  • 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

    WMQ BASE MULTIP

  • Fixed component ID

    5724H7251

Applicable component levels

  • R800 PSY

       UP

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Document Information

Modified date:
11 January 2016