Ghost L22 Bypassed in Week One with 4-Line Exploit in BreachLab Wargame

The BreachLab wargame includes two challenges: Ghost (23 Linux privilege escalation levels) and Phantom (32 levels involving container escape, Kubernetes, and cloud exfiltration). A player bypassed Ghost level 22 in week one using a four-line exploit that chained a SUID-cat helper to read the final flag without completing the full chain. The vulnerability was patched within 40 minutes during the same SSH session. The game is accessible via SSH without signup, with separate ports for each challenge and a live leaderboard available on the website.