Overview
Basic Command Injection focuses on a domain lookup feature where user-controlled input reaches an operating system command.
This lab introduces the core risk behind command injection: application input can become part of a shell or system utility invocation when validation and command construction are unsafe.
Security Impact
Command injection can allow attackers to run unintended operating system commands under the permissions of the web application process. In real environments, this may lead to sensitive file access, service disruption, internal reconnaissance, or full host compromise.
Vulnerability Scope
Network diagnostic tools, domain lookup forms, ping utilities, image converters, archive handlers, and admin panels all become risky when user input is passed toward system binaries as an argument.
Lab Focus
The lab keeps attention on the handoff between web input and operating system utilities, where strict argument separation, allowlists, and safer execution APIs matter most.
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