Failure States

As previously discussed, buffer overflows are one way in which an attacker can attempt to compromise application security; therefore, it is important that the developer exam the ways in which the application can fail and attempt to contain the damage. Well-coded applications have built-in recovery procedures, such as the following:

  • Fail safe If a failure is detected, the system is protected from compromise by termination of services or disabling of the system.
  • Fail soft A detected failure terminates the noncritical process or application while the system continues to function.

Applications that recover to a fail-open state allow an attacker to bypass security controls and easily compromise the system. Systems that fail-open are typically undesirable because of the security risk.


The CISSP Cram Sheet

A Note from Series Editor Ed Tittel

About the Author

Acknowledgments

We Want to Hear from You!

Introduction

Self-Assessment

The CISSP Certification Exam

Physical Security

Security-Management Practices

Access-Control Systems and Methodology

System Architecture and Models

Telecommunications and Network Security

Applications and Systems-Development Security

Operations Security

Business Continuity Planning

Law, Investigations, and Ethics

Cryptography

Practice Exam 1

Answers to Practice Exam 1

Practice Exam 2

Answers to Practice Exam 2

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CISSP Exam Cram 2
CISSP Exam Cram 2
ISBN: 078973446X
EAN: 2147483647
Year: 2003
Pages: 204
Authors: Michael Gregg
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