architect/skills/binary/format-string-exploitation.md

---
name: format-string-exploitation
domain: binary
triggers:
  languages: [c, cpp]
severity_focus: [P1, P2, P3]
---

# format-string-exploitation

printf-family with attacker-controlled format: arbitrary read (%n$s/x), arbitrary write (%n), GOT overwrites, leaks for ASLR bypass.

## Detection checklist
- enumerate exposure
- match canonical sinks
- confirm reproducibility
- map to CWE / OWASP / CVSS

## Exploitation primitives
- reproduce in lab
- minimise the PoC
- assess blast radius

## Reporting fingerprint
- include affected version range
- include suggested fix snippet
- include CVSS 3.1 vector