Yes , you have to update all jars
You can add these properties directly into manifest of the jar files (all jars) from a file -
In your plugins directory :
jar ufm <jar_file> additionalAttribute.txt
This additionalAttribute.txt will contain your additional manifest attribute like -
Permissions: all-permissions Codebase: * Application-Name: My App Caller-Allowable-Codebase: * Trusted-Library: true Application-Library-Allowable-Codebase: *