Failing to connect to AIX on PAM 2.8.3

Products

• CA Privileged Access Manager - Cloakware Password Authority (PA)
• PAM SAFENET LUNA HSM
• CA Privileged Access Manager (PAM)

Issue/Introduction

Customer upgraded AIX to 7.2
PAM is also upgraded to 2.8.3

They are having issues in verifying and changing password for accounts that requires the follow settings. (Change on Behalf with Update/Verify Credentials Script enabled)

From the tomlogs (7.2AIX), it shows this error message 
WARNING: **** ACCOUNT VERIFICATION FAILED: targetAccount ID: 1125' due to 'Error Code: 15212

Environment

PAM 2.8.3 (upgraded from PAM 2.6.x)
AIX 7.2
 

Resolution

Secure connection could not be established from PAM to AIX, as a result the password verification could not be performed.

Caused by: com.jcraft.jsch.JSchException:
Algorithm negotiation fail at com.jcraft.jsch.Session.receive_kexinit(Session.java:582)
at com.jcraft.jsch.Session.connect(Session.java:320)
at com.jcraft.jsch.Session.connect(Session.java:183)
at com.cloakware.cspm.server.plugin.SSHConnector.connect(SSHConnector.java:113)

The issue is resolved after applying PAM 2.8.3.16