Why am I getting warning when trying to run Java application in firefox ?

Solution Unverified - Updated -

Issue

  • When trying to open Java based website or application in firefox getting warning message:

    Application APPLICATION_NAME/APPLET_NAME from WEBSITE_URL is missing the permissions 
    attribute. Application without this attribute should not be trusted. Do you wish to 
    allow this application to run ?
    
  • Similar warnings can be seen by opening Java tester Application in firefox on RHEL7.

  • How to configure firefox to not show such warning messages ?

Environment

  • Red Hat Enterprise Linux 7
  • java-1.7.0-openjdk-1.7.0.85-2.6.1.2.el7_1

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