C#


CSHARP.IO.TAINT.CONTROL : Tainted Control (C#)

Summary

Tainted data flows into a field annotated as [ControlTrusted], or into a control modifying method.

Checks for this class use the CodeSonar C# taint analysis. See Taint Tracking for CodeSonar C# Warning Classes for more information on this analysis, including lists of the methods that CodeSonar automatically recognizes as relevant and information about specifying additional methods that CodeSonar should recognize as taint sources, sinks, or sanitizers.

Use configuration parameter CSHARP_ANALYSIS_ADVANCED_INJECTION to specify the level of checking to perform for this and other taint-related warning classes:

Properties

Class Name Tainted Control (C#)
Significance security
Mnemonic CSHARP.IO.TAINT.CONTROL
Categories
CWE CWE:74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
OWASP-2017 OWASP-2017:A1 Injection
OWASP-2021 OWASP-2021:A3 Injection
Availability Available for C# only.
Enabling Checks for this warning class are enabled by default. To disable them, add the following WARNING_FILTER rule to the project configuration file.
WARNING_FILTER += discard class="Tainted Control (C#)"

Resolution

Verify that a security error actually corresponds to unconstrained information flow from source locations into sink locations. If this is the case, add a sanitizing algorithm to clean data before it flows into sinks, or use prepared statements for SQL queries rather than free queries built from string concatenation.

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.