Individual skill
exploiting-os-command-injection
Identifying and exploiting OS command injection vulnerabilities in web applications where user input is passed to a system shell, leading to arbitrary command execution. Covers in-band, blind, and out-of-band detection across Linux and Windows, separator and filter-bypass variants, and escalation to full RCE.
internal/tools/skills/data/web-application-security/exploiting-os-command-injection/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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- Repository stars (not skill ratings)
- 1,327
- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- penetration-testing Declared skill tag
- command-injection Declared skill tag
- os-command-injection Declared skill tag
- rce Declared skill tag
- remote-code-execution Declared skill tag
- owasp Declared skill tag
- web-security Declared skill tag
- security Derived category
- testing Derived category
- security-application Derived category
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# Exploiting OS Command Injection
## When to Use
- During authorized penetration tests when a parameter is reflected into a
system command, shell, or process invocation (ping, nslookup, ImageMagick,
ffmpeg, pdf/zip utilities, git, tar, "export to PDF", "test connection", etc.)
- When testing admin/diagnostic features ("ping host", "traceroute", "DNS lookup",
"check connectivity") which are the single most common command-injection sinks
- When file names, hostnames, or format parameters flow into `system()`,
`exec()`, `popen()`, `subprocess` with `shell=True`, `Runtime.exec`, or
backticks
- After finding LFI/file upload — chaining to RCE often involves a command sink
