There are several files with sensitive credential and configuration data on the Management Server which are accessible by all unix users on this system. Users without additional rights might access the data and e.g. brute force the credentials for the cassandra backend user.
ascsac:apigee:/var/SP/apigee $ ll /opt/apigee/customer/conf/license.txt
-rw-r--r--. 1 apigee apigee 349 Jul 13 16:45 /opt/apigee/customer/conf/license.txt
ascsac:apigee:/var/SP/apigee $ ll /opt/apigee/edge-management-server/conf/cassandra.properties
-rw-rw-r--. 1 apigee apigee 69 Aug 4 15:30 /opt/apigee/edge-management-server/conf/cassandra.properties
ascsac:apigee:/var/SP/apigee $ ll /opt/SP/apigee/edge-ui-4.16.01-0.0.3654/conf/apigee.conf
-rw-rw-r--. 1 apigee apigee 1997 Aug 15 17:54 /opt/SP/apigee/edge-ui-4.16.01-0.0.3654/conf/apigee.conf
will be there impact on Apigee UI if we chmod 640 these files ?