PK52674: FAILED SSL HANDSHAKE MAY RESULT IN A SOCKET LEAK

Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
Java SDK 1.5 SR10 Cumulative Fix for WebSphere Application Server
6.1.0.31: Java SDK 1.5 SR11 FP1 Cumulative Fix for WebSphere Application Server
6.1.0.33: Java SDK 1.5 SR12 FP1 Cumulative Fix for WebSphere
6.1.0.29: Java SDK 1.5 SR11 Cumulative Fix for WebSphere Application Server
6.1.0.35: Java SDK 1.5 SR12 FP2 Cumulative Fix for WebSphere
6.1.0.37: Java SDK 1.5 SR12 FP3 Cumulative Fix for WebSphere
6.1.0.39: Java SDK 1.5 SR12 FP4 Cumulative Fix for WebSphere Application Server
6.1.0.41: Java SDK 1.5 SR12 FP5 Cumulative Fix for WebSphere Application Server
6.1.0.43: Java SDK 1.5 SR13 Cumulative Fix for WebSphere Application Server
6.1.0.45: Java SDK 1.5 SR14 Cumulative Fix for WebSphere Application Server
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
6.1.0.47: Java SDK 1.5 SR16 Cumulative Fix for WebSphere Application Server
Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Under certain conditions, the SSL channel will leak a socket
  file descriptor. The FFDC will record an entry id 507 from the
  SSLQueuedHandshake class.
  
  Stack Dump=javax.net.ssl.SSLException: Handshake terminated SSL
  engine: CLOSED
    at com.ibm.ssl.channel.impl.
      SSLUtils.handleHandshake(SSLUtils.java:808)
    at com.ibm.ssl.channel.impl.
      SSLQueuedHandshake.run(SSLQueuedHandshake.java:81)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere Application Server    *
  *                 V6.1 for z/OS using SSL channel.             *
  ****************************************************************
  * PROBLEM DESCRIPTION: Under certain conditions, the SSL hand  *
  *                      shake will fail and leak a socket. FFDC *
  *                      shows the SSLQueuedHandshake class      *
  *                      recording a "handshake terminated"      *
  *                      exception.                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  In the control region, the SSL handshake work will attempt to
  complete on non-ACRW threads. If this queued handshake event
  receives an SSL handshake failure, then it is possible for the
  queued handshake class to mishandle the error and not properly
  close the socket at that point.
  

Problem conclusion

• The queued handshake class will now properly notify the SSL
  channel code of the handshake failure in this condition. The
  handshake failure is then handled gracefully, according to the
  individual scenario. The initial handshake of a socket will
  result in the socket closure, while a renegotiation midstream
  will hand the read or write IO failure back to the channel
  user such as HTTP channel, or DCS channel, etc.
  
  APAR PK52674 is currently targeted for inclusion in Service
  Level (Fix Pack) 6.1.0.13 of WebSphere Application Server V6.1
  for z/OS.
  

Temporary fix

Comments

APAR Information

• 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

  WEBSPHERE FOR Z

• Fixed component ID

  5655I3500

Applicable component levels

• R500 PSN

     UP

• R601 PSN

     UP

• R610 PSY UK31212

     UP07/11/22 P F711

Fix is available

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