IBM Support

IT26592: TCPIP NODES MAY DROP THE FIRST PACKET AFTER AN SSL HANDSHAKE

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APAR status

  • Closed as program error.

Error description

  • It is possible for the TCPIP Nodes to drop a packet if this
    occurs within the same TCP/IP read
    as the end of an SSL handshake. This may lead to an error
    containing the explanation string
    
    "error: java error, bad record mac"
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    All users of IBM Integration Bus version 10 or IBM App Connect
    Enterprise version 11 using the TCPIP Nodes with SSL/TLS
    enabled.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    It is possible for the TCPIP Nodes to drop a packet if this
    occurs within the same TCP/IP read as the end of a TLS/SSL
    handshake. This may lead to an error containing the explanation
    string
    
    "error: java error, bad record mac"
    
    This happens because the excess data after the handshake is
    complete is not made eligible to satisfy application level data
    reads. This causes the application to read from the socket and
    pass SSL packets to the encryption/decryption routines in an out
    of order sequence.
    

Problem conclusion

  • The excess data read during handshaking is now passed on so that
    is eligible for application level reads so the exception no
    longer happens.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v10.0      10.0.0.15
    v11.0      11.0.0.3
    
    The latest available maintenance can be obtained from:
    http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
    
    If the maintenance level is not yet available,information on
    its planned availability can be found on:
    http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
    ---------------------------------------------------------------
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT26592

  • Reported component name

    INTEGRATION BUS

  • Reported component ID

    5724J0540

  • Reported release

    A00

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-10-11

  • Closed date

    2018-12-19

  • Last modified date

    2018-12-19

  • 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

    INTEGRATION BUS

  • Fixed component ID

    5724J0540

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSNQK6","label":"IBM Integration Bus"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"10.0","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
19 December 2018