Command Injection
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What is command Injection?
A command injection permits the execution of arbitrary operating system commands by an attacker on the server hosting an application. As a result, the application and all its data can be fully compromised. The execution of these commands typically allows the attacker to gain unauthorized access or control over the application's environment and underlying system.
Context
Depending on where your input is being injected you may need to terminate the quoted context (using "
or '
) before the commands.
Command Injection/Execution
Limition Bypasses
If you are trying to execute arbitrary commands inside a linux machine you will be interested to read about this Bypasses:
Examples
Parameters
Here are the top 25 parameters that could be vulnerable to code injection and similar RCE vulnerabilities (from link):
Time based data exfiltration
Extracting data: char by char
DNS based data exfiltration
Based on the tool from https://github.com/HoLyVieR/dnsbin
also hosted at dnsbin.zhack.ca
Online tools to check for DNS based data exfiltration:
dnsbin.zhack.ca
pingb.in
Filtering bypass
Windows
Linux
Brute-Force Detection List
References
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