Use of Same Variable for Multiple Purposes

Opis

The code contains a callable, block, or other code element in which the same variable is used to control more than one unique task or store more than one instance of data.

Skutki

• Other

  Reduce Maintainability

  This issue makes it more difficult to 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

  Increase Analytical Complexity

  Use of the same variable for multiple purposes can make it more difficult for a person to read or understand the code, potentially hiding other quality issues.

Przykłady podatności

• CVE-2023-26463 Chain: IPSec VPN product uses the same variable for multiple purposes in the same function (CWE-1109), leading to incorrect access control (CWE-284) and expired pointer dereference (CWE-825)

Słabość nadrzędna

• CWE-1078 Inappropriate Source Code Style or Formatting

Kiedy powstaje

• Implementation

Dotyczy

Not Language-Specific

Źródła

1. Providing a Framework for Effective Software Quality Assessment — Robert A. Martin, Lawrence H. Shafer, 1996