APAR status
Closed as program error.
Error description
While connecting to new versions of SFTP Servers, IBM Sterling b2B Integrator is unable to connect using diffie-hellman-group-exchange-sha256. The following error message is displayed : [2019-03-11 05:02:03.2] ERROR 000000000000 GLOBAL_SCOPE Session.beginSession(BSR,R,PT) runnable caught exception java.io.IOException at com.sterlingcommerce.woodstock.ssh.maverick.PsSshTransport.creat ePsSshTransport(PsSshTransport.java:123) at com.sterlingcommerce.woodstock.ssh.maverick.PsSshTransport.<init >(PsSshTransport.java:82) at com.sterlingcommerce.woodstock.services.sftpclient.client.Sessio n$1.run(Session.java:244) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(Unkno wn Source) at java.lang.Thread.run(Thread.java:798) [2019-03-11 05:02:03.2] ERROR Session.failedSequence(S,R) Connection Failure! Could not complete connection to specified host : [2019-03-11 05:03:05.092] ERROR Session.failedSequence(S,R) No such file.: No such file. : [2019-03-11 05:18:05.228] ERROR Session.beginSession(BSR,R,PT) runnable caught exception. SSH_DISCONNECT_BY_APPLICATION:SFTP session channel closed by server. [2019-03-11 05:18:05.228] ERROR [1552277885228] com.maverick.ssh.SshException [2019-03-11 05:18:05.228] ERRORDTL [1552277885228]com.maverick.ssh.SshException: com.maverick.ssh.SshException at com.maverick.ssh.components.jce.DiffieHellmanGroupExchangeSha1.p erformClientExchange(Unknown Source) 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$1.run(Session.java:269) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(Unkno wn Source) at java.lang.Thread.run(Thread.java:798) Caused by: com.maverick.ssh.SshException: Key exchange failed: Expected SSH_MSG_KEX_GEX_GROUP [id=3] [Unknown cause] ... 10 more
Local fix
STRRTC - 581126 GB / GB Circumvention: None
Problem summary
USERS AFFECTED: ALL PROBLEM DESCRIPTION: SFTP Client Begin Session Service fails using diffie-hellman-group-exchange-sha256 in IBM Sterling B2B Integrator V5.2.6.3_9. PLATFORMS AFFECTED: ALL
Problem conclusion
RESOLUTION SUMMARY: A code fix is provided. DELIVERED IN: 5020603_10
Temporary fix
Comments
APAR Information
APAR number
IT28464
Reported component name
STR B2B INTEGRA
Reported component ID
5725D0600
Reported release
526
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-03-15
Closed date
2019-05-13
Last modified date
2019-05-17
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
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS3JSW","label":"IBM Sterling B2B Integrator"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.2.6","Edition":"","Line of Business":{"code":"LOB59","label":"Sustainability Software"}}]
Document Information
Modified date:
17 May 2019