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C#

C# static code analysis

Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your C# code

  • All rules 493
  • Vulnerability46
  • Bug88
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  • Quick Fix 61
Filtered: 4 rules found
denial-of-service
    Impact
      Clean code attribute
        1. Classes should "Dispose" of members from the classes' own "Dispose" methods

           Bug
        2. Classes with "IDisposable" members should implement "IDisposable"

           Bug
        3. "IDisposables" should be disposed

           Bug
        4. Regular expressions should not be vulnerable to Denial of Service attacks

           Vulnerability

        Classes should "Dispose" of members from the classes' own "Dispose" methods

        intentionality - complete
        reliability
        Bug
        • cwe
        • denial-of-service

        Why is this an issue?

        More Info

        It is possible in an IDisposable to call Dispose on class members from any method, but the contract of Dispose is that it will clean up all unmanaged resources. Move disposing of members to some other method, and you risk resource leaks.

        This rule also applies for disposable ref structs.

        Noncompliant code example

        public class ResourceHolder : IDisposable
        {
          private FileStream fs;
          public void OpenResource(string path)
          {
            this.fs = new FileStream(path, FileMode.Open);
          }
          public void CloseResource()
          {
            this.fs.Close();
          }
        
          public void CleanUp()
          {
            this.fs.Dispose(); // Noncompliant; Dispose not called in class' Dispose method
          }
        
          public void Dispose()
          {
            // method added to satisfy demands of interface
          }
        }
        

        Compliant solution

        public class ResourceHolder : IDisposable
        {
          private FileStream fs;
          public void OpenResource(string path)
          {
            this.fs = new FileStream(path, FileMode.Open);
          }
          public void CloseResource()
          {
            this.fs.Close();
          }
        
          public void Dispose()
          {
            this.fs.Dispose();
          }
        }
        
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