Oracle TNS Listener Exploitation

Oracle Listener serves as a main communication point for the database. It provides necessary abstraction to host’s transport protocols in order to allow Oracle’s higher level session protocols to function across multiple platforms.

Architecture

All database clients must first establish connection with the listener and then wait to be redirected to the database itself. TNS Listener is also used during external procedure calls. TNS Listener is managed by connecting to it locally or remotely (versions prior to 10g) or by editing configuration…