Common Weakness Enumeration

A Community-Developed List of Software Weakness Types

CWE/SANS Top 25 Most Dangerous Software Errors
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CWE-912: Hidden Functionality

Weakness ID: 912
Abstraction: Class
Status: Incomplete
Presentation Filter:
+ Description

Description Summary

The software contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the software's users or administrators.

Extended Description

Hidden functionality can take many forms, such as intentionally malicious code, "Easter Eggs" that contain extraneous functionality such as games, developer-friendly shortcuts that reduce maintenance or support costs such as hard-coded accounts, etc. From a security perspective, even when the functionality is not intentionally malicious or damaging, it can increase the software's attack surface and expose additional weaknesses beyond what is already exposed by the intended functionality. Even if it is not easily accessible, the hidden functionality could be useful for attacks that modify the control flow of the application.

+ Time of Introduction
  • Architecture and Design
  • Implementation
+ Common Consequences

Technical Impact: Varies by context; Alter execution logic

+ Potential Mitigations

Phase: Installation

Always verify the integrity of the software that is being installed.

Phase: Testing

Conduct a code coverage analysis using live testing, then closely inspect any code that is not covered.

+ Relationships
NatureTypeIDNameView(s) this relationship pertains toView(s)
ChildOfCategoryCategory505Intentionally Introduced Weakness
Development Concepts (primary)699
ChildOfWeakness ClassWeakness Class710Coding Standards Violation
Research Concepts (primary)1000
ParentOfWeakness ClassWeakness Class506Embedded Malicious Code
Research Concepts (primary)1000
ParentOfWeakness ClassWeakness Class514Covert Channel
Research Concepts1000
+ Content History
Submission DateSubmitterOrganizationSource
2012-12-28MITREInternal CWE Team

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Page Last Updated: May 05, 2017