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Oracle 11g Anti-hacker's Cookbook

Oracle 11g Anti-hacker's Cookbook

By : Adrian Neagu
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Oracle 11g Anti-hacker's Cookbook

Oracle 11g Anti-hacker's Cookbook

5 (5)
By: Adrian Neagu

Overview of this book

For almost all organizations, data security is a matter of prestige and credibility. The Oracle Database is one of the most rich in features and probably the most used Database in a variety of industries where security is essential. To ensure security of data both in transit and on the disk, Oracle has implemented the security technologies to achieve a reliable and solid system. In Oracle 11g Anti-Hacker's Cookbook, you will learn about the most important solutions that can be used for better database security."Oracle 11g Anti-hacker's Cookbook" covers all the important security measures and includes various tips and tricks to protect your Oracle Database."Oracle 11g Anti-hacker's Cookbook" uses real-world scenarios to show you how to secure the Oracle Database server from different perspectives and against different attack scenarios. Almost every chapter has a possible threads section, which describes the major dangers that can be confronted. The initial chapters cover how to defend the operating system, the network, the data and the users. The defense scenarios are linked and designed to prevent these attacks. The later chapters cover Oracle Vault, Oracle VPD, Oracle Labels, and Oracle Audit. Finally, in the Appendices, the book demonstrates how to perform a security assessment against the operating system and the database, and how to use a DAM tool for monitoring.
Table of Contents (16 chapters)
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Oracle 11g Anti-hacker's Cookbook
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
1
Index

Securing external program execution (EXTPROC)


Some database applications can use external dynamic libraries implemented in a language such as C or C++. Usually these external libraries are developed for performance reasons, but they can also represent a major security threat by being replaced with ones that contain malicious code. Therefore this feature must be used with maximum precaution.

The listener process allows executing external programs using a dedicated program named extproc, which is located by default at $ORACLE_HOME/bin. The access to these external libraries can be configured within the listener configuration file listener.ora.

The following is a configuration example from listener.ora that allows executing a specific library:

  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db/)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:/home/oracle/appclrso.so")
    )
  )

The corresponding entry for extproc from...

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