3312483 - Diagnostics Agent Connection Error "Root exception is java.lang.securityException: User 'Guest' is not authorized." - SAP Solution Manager 7.2

After an upgraded of the SAP Solution Manager 7.2 or the implementation of the SAP Security Note 3268093 - [CVE-2023-0017] "Improper access control in SAP NetWeaver AS for Java".

• When trying to register the Diagnostics Agent to SAP Solution Manager by running the SMDSetup script: 
  
  "./smdsetup.sh managingconf hostname:"sapms://<solman.full.qual.host.name>" port:"<81xx>" 
  
  The Script (Registration process) is ending up on the following error :

java.lang.IllegalArgumentException: SAPInst parameter 'user' is empty.
at com.sap.smd.setup.SetupTask.getParameter(SetupTask.java:339)
at com.sap.smd.setup.SetupMaintenance.executeManagingConfUpdate(SetupMaintenance.java:526)
at com.sap.smd.setup.SetupMaintenance.executeTasks(SetupMaintenance.java:211)
at com.sap.smd.setup.SetupMaintenance.main(SetupMaintenance.java:60)

• The Diagnostics Agent tries to connect also does not appear in the "Non-authenticated Agent" tab of the Agent Administration and the below error shows in the SMDSystem.log:

[EXCEPTION]
javax.naming.NamingException: Exception while trying to get InitialContext. [Root exception is java.lang.SecurityException: User 'Guest' is not authorized.]
at com.sap.engine.services.jndi.InitialContextFactoryImpl.getInitialContext(InitialContextFactoryImpl.java:386)
...
at com.sap.smd.agent.connection.SMDConnectionTask.attemptConnection(SMDConnectionTask.java:92)

Notes:

• Already trusted agents, i.e., the agents in the Connected Agents tab seems not affected, because they use certificate-based authentication.
• Same problem occurs when re-connecting an agent from another SAP Solution Manager.

• SAP Solution Manager 7.2
• SAP Netweaver Application Server 7.50 SP25 (or lower versions where SAP Note 3268093 has been implemented)
• LM-SERVICE 14.11 or higher has been applied
• DAA versions 11.22, 14.11 or 14.15 are being used for new installations

JNDI, NamingException, Non-authenticated, CVE-2023-0017, smdsetup, Diagnostics Agent User 'Guest' error, DAA, user, error , KBA , SV-SMG-DIA-SRV-AGT , Agent Framework , SV-SMG-INS-AGT , Installation of Solution Manager Diagnostics Agent , Known Error