.NET Command Injection: Examples and Prevention

The StackHawk blog post, authored by Carlos Schults, provides an insightful introduction to .NET command injection, a type of code injection attack where malicious actors exploit vulnerabilities to execute arbitrary commands on a server's operating system. The post explains the fundamentals of command injections, the potential dangers they pose, and demonstrates a practical example using a .NET MVC app, highlighting the risks associated with improperly handled user inputs. Schults emphasizes the importance of not blindly trusting external data and suggests strategies to prevent such attacks, such as avoiding direct OS command execution, validating input with regular expressions or allowlists, and utilizing .NET's static analysis security rules like CA3006. The guide aims to educate .NET developers on recognizing and defending against command injections, underscoring the necessity of diligence in software security practices.