Command Injection: How Hackers Take Over Servers with One Semicolon
Think your input filters are safe? In this video, we go beyond the semicolon to explore how command injection works, how to bypass blacklists using ${IFS} and tabs, and the "Gold Standard" for fixing these vulnerabilities for good.
Command Injection (or OS Injection) remains one of the most critical web vulnerabilities. Whether you're a CTF player looking to bypass tricky filters or a developer trying to secure your code, this video covers all of the bases to understand command injection and how to prevent it.
Timestamps:
0:00 – Introduction: What is Command Injection?
0:58 – Exploring a Vulnerable Website
1:50 – Testing for Command Injection
4:06 – Bypassing Command Injection Filters
4:40 – Getting a Reverse Shell with Command Injection
5:12 – Where to look for Command Injection in the Wild
6:21 – Preventing Command Injection
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