CWEweakness

CWE-1120 Excessive Code Complexity

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Abstraction
Class
Structure
Simple
Status
Incomplete
Languages
Not Language-Specific
CWE version
5.0

Description

The code is too complex, as calculated using a well-defined, quantitative measure.

Common consequences

• Other: Reduce Maintainability, Increase Analytical Complexity — This issue makes it more difficult to understand and/or maintain the product, which indirectly affects security by making it more difficult or time-consuming to find and/or fix vulnerabilities. It also might make it easier to introduce vulnerabilities. • Other: Reduce Performance — This issue can make the product perform more slowly. If the relevant code is reachable by an attacker, then this performance problem might introduce a vulnerability.

Detection methods

• Automated Static Analysis: Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)

Related

Child of · CWE (1)

  • CWE-710 Improper Adherence to Coding Standards weakness

Referenced by CWE · child of (13)

  • CWE-1047 Modules with Circular Dependencies weakness
  • CWE-1056 Invokable Control Element with Variadic Parameters weakness
  • CWE-1060 Excessive Number of Inefficient Server-Side Data Accesses weakness
  • CWE-1064 Invokable Control Element with Signature Containing an Excessive Number of Parameters weakness
  • CWE-1075 Unconditional Control Flow Transfer outside of Switch Block weakness
  • CWE-1080 Source Code File with Excessive Number of Lines of Code weakness
  • CWE-1095 Loop Condition Value Update within the Loop weakness
  • CWE-1119 Excessive Use of Unconditional Branching weakness
  • CWE-1121 Excessive McCabe Cyclomatic Complexity weakness
  • CWE-1122 Excessive Halstead Complexity weakness
  • CWE-1123 Excessive Use of Self-Modifying Code weakness
  • CWE-1124 Excessively Deep Nesting weakness
  • CWE-1125 Excessive Attack Surface weakness

Referenced by CWE · has member (1)

  • CWE-1460 Weaknesses Addressed by the Top 20 Secure PLC Coding Practices view