Memory Leak caused in Adaptive Authentication Functionality

[shanggeeth]

Describe the issue:
There's a memory leak caused by usage of Nashorn Script Engine while executing adaptive authentication scripts.
This results in

• Increasing memory usage over time when on high load.
• Decreased throughput
• Eventual server crash with OOM error.

How to reproduce:

• Refer to the original Issue - Dynalink leaks memory when adaptive authentication scripts are used with JDK 11 #16597

Expected behaviour:

• Memory usage should be optimal over high server loads when adaptive authentication script is used and server throughput should not be affected.

Environment information (Please complete the following information; remove any unnecessary fields) :

• Product Version: [IS 7.0.0]
• OS: [Mac]
• Database: [H2]
• Userstore: [JDBC]

[shanggeeth]

The immediate fix is added via

• Fix Nashorn out of memory issue in adaptive script execution carbon-identity-framework#5202