Create commandinjection.cs

[varunsh-coder]

This vulnerable code is from the Semgrep registry.

[step-security-bot]

Please find StepSecurity AI-CodeWise code comments below.

Code Comments

commandinjection.cs

• [High]Avoid using untrusted data to construct command line arguments
  The RunOsCommand and RunOsCommandWithProcessParam methods use the Process.Start method with an unsanitized argument, which can lead to command injection attacks if the argument contains user-controlled data. Sanitize input data by using parameters explicitly to pass arguments to the command.
• [Low]Use a white list of allowed characters to validate input
  The RunConstantAppWithArgs method uses an argument constant as input for the FileName parameter. It is not clear from the code what constant is or where it comes from, so it may still be possible to inject commands here. If the constant argument is expected to come from an untrusted source, sanitize it using a white list of allowed characters, or validate it against a list of known safe values. Otherwise, document the origin and nature of the constant argument to make sure it is not unsanitized user input..

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