Juq-496 May 2026

| Issue | Mitigation | |-------|------------| | – the check is trivial to reverse‑engineer. | Move the secret to a secure location (e.g., server‑side validation) or use a proper cryptographic challenge. | | strcpy on a fixed‑size buffer – classic overflow vector. | Replace with strncpy / strlcpy and always validate the size before copying. | | Binary expects binary input via CLI – not user‑friendly, may cause accidental crashes. | Accept hex‑encoded strings or read from a file, with clear error messages. | | Full RELRO + NX + Canary – good baseline, but the check can be bypassed. | Keep the baseline, but also avoid “security through obscurity”. | | Static magic value – can be extracted with strings or a quick disasm. | Use a per‑session random token verified by a server, or embed the check in a more complex algorithm. |