Command

Introduction Command Injection is one of the most critical web vulnerabilities because it lets an attacker execute OS commands on the backend host. The impact can be full system compromise and lateral movement if the server has network access. The vulnerability appears when user input is passed into a system command without strict validation and sanitization. This issue is not limited to web apps, but web apps are the most common surface because they regularly call system utilities. If a parameter such as an IP address is used inside a command, a small injection operator can turn it into a full shell. Because the execution happens server-side, any output you can observe is valuable evidence. ...