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Assessment Title
Rule Text
Fixed user and PUBLIC Database links must be authorized for use.
Description
Discussion Text
Database links define connections that may be used by the local Oracle database to access remote Oracle databases (homogenous links) and non-Oracle Databases (heterogeneous links). These links provide a means for a compromise to the local database to spread to remote databases and for a compromise of a remote database to the local database in a distributed database environment. Limiting or eliminating the use of database links, where they are not required to support the operational system, can help isolate compromises, mitigate risk, and reduce the potential attack surface.
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