IBM Support

IT29237: AMQ8075 Authorization failed error with CONNAUTH ADOPTCTX(YES)

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APAR status

  • Closed as program error.

Error description

  • A channel receives an asserted client user id of 12 characters
    in length and also an MQCSP set of credentials with a shorter
    user id. On successful validation, the channel adopts the MQCSP
    set of credentials but channel status reports the short user id
    with trailing garbage from the asserted user id. Subsequent
    multiplexed connections using the same channel instance fail to
    connect with 2035 (MQRC_NOT_AUTHORIZED) and "AMQ8075:
    Authorization failed" is reported in the queue manager error
    logs.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Any users changing the MCAUSER for a SVRCONN channel agent on
    Windows, for example using a security exit, CHLAUTH rules or
    CONNAUTH ADOPTCTX(YES).
    
    
    Platforms affected:
    Windows
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    If the MCAUSER of a SVRCONN channel agent is altered by security
    exit, a CHLAUTH rule or CONNAUTH with ADOPTCTX(YES) and the
    value of the new user id is shorter that the previous user id
    (typically asserted by the client), trailing characters from the
    previous user id can corrupt the new user id value. When this
    occurs, channel status reports a corrupted user id and and any
    subsequent multiplexed connections from the same connection will
    fail.
    

Problem conclusion

  • The logic error that existed replacing the user id is corrected.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v9.0 LTS   9.0.0.8
    v9.1 CD    9.1.3
    v9.1 LTS   9.1.0.3
    
    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

    IT29237

  • Reported component name

    IBM MQ BASE M/P

  • Reported component ID

    5724H7261

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-05-23

  • Closed date

    2019-06-10

  • Last modified date

    2019-06-10

  • 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

    IBM MQ BASE M/P

  • Fixed component ID

    5724H7261

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"9.0","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
10 June 2019