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Vulnerability

As explained in Spring Security in Action, Second Edition

A weakness in an application that permits unauthorized use of data or functionality or allows the application to affect other systems.

A vulnerability is a weakness that permits unauthorized use of data or functionality, or allows an application to affect other systems. Its significance depends on the sensitivity of the data and actions exposed. section 1.3

Typical consequences include:

  • Leaking internal organizational data from a back-office application. section 1.3
  • Charging users for trips that are not theirs. section 1.3
  • Showing one banking customer another customer’s transactions. section 1.3
  • Exposing sensitive information through logs or error messages. section 1.5

How Spring Security in Action, Second Edition covers it

How deep it goes
Defines the weakness and illustrates consequences, but stops short of explaining exploitation or remediation procedures.
Examples
Uses back-office leaks, fraudulent ride charges, cross-user banking transactions, and sensitive logs or errors.
What you can do after
Apply layered security from project inception and recognize common exposure paths before they cause financial or reputational harm.
How it connects
Ties vulnerabilities to security, data protection, application functionality, logs, error messages, and system effects.

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This explainer was generated by Manning's knowledge graph from the text of Spring Security in Action, Second Edition. The section links point to the parts of the book it draws on.