IT24376: SFTP OUTBOUND COMMUNICATION FAILS AFTER UPGRADE TO V5.2.5_17

APAR status

• Closed as program error.

Error description

• After upgrading to 525_17, the SFTP  client processes
  fail to trading partners.
  
  Error in logs:
  
  [2018-03-01 10:05:54.631] DEBUG Session.beginSession(BSR,R,PT)
  entering.
  [2018-03-01 10:05:59.064] DEBUG PsSshTransport getHost() call
  start to fetch the HostAddress
  [2018-03-01 10:05:59.064] DEBUG PsSshTransport getHost() call
  end to fetch the HostAddress
  [2018-03-01 10:05:59.091] ERROR Session.beginSession(BSR,R,PT)
  runnable caught exception. SSH_DISCONNECT_BY_APPLICATION:SFTP
  session channel closed by server.
  [2018-03-01 10:05:59.092] ERROR [1519916759091] The host key
  signature is invalid [Unknown cause]
  [2018-03-01 10:05:59.092] ERRORDTL
  [1519916759091]com.maverick.ssh.SshException: The host key
  signature is invalid [Unknown cause]
  at com.maverick.ssh2.TransportProtocol.e(Unknown Source)
  at com.maverick.ssh2.TransportProtocol.processMessage(Unknown
  Source)
  at
  com.maverick.ssh2.TransportProtocol.startTransportProtocol(Unkno
  wn Source)
  at com.maverick.ssh2.Ssh2Client.connect(Unknown Source)
  at com.maverick.ssh.SshConnector.connect(Unknown Source)
  at com.maverick.ssh.SshConnector.connect(Unknown Source)
  at
  com.sterlingcommerce.woodstock.services.sftpclient.client.Sessio
  n$1.run(Session.java:219)
  at
  EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(Unkno
  wn Source)
  at java.lang.Thread.run(Thread.java:745)
  

Local fix

• STRRTC - 563728
  BD / BD
  Circumvention: None
  

Problem summary

• USERS AFFECTED:
  ALL
  
  PROBLEM DESCRIPTION:
  SFTP Outbound communication fails with error after upgrade to
  525_17 - SSH_DISCONNECT_BY_APPLICATION:SFTP session channel
  closed by server
  
  PLATFORMS AFFECTED:
  ALL
  

Problem conclusion

• RESOLUTION SUMMARY:
  
  A code fix is provided.
  
  DELIVERED IN:
  5020500_19
  

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

  STR B2B INTEGRA

• Fixed component ID

  5725D0600

Applicable component levels