RatCTF
🐀🐀🐀 0 pts earned

Container Escape

Premium Machine (Locked)

🧩 ContainmentFailure

🖧 AD Network — ContainmentFailure

🔒 Container Caps 🔒 Container Env 🔒 Container Mount 🔒 Container Socket Container Escape

SYS_ADMIN capability is present. The classic cgroups v1 notify_on_release escape uses the release_agent file to execute a command as root on the host when a cgroup empties. Writes the root flag to /tmp.

🩸 First user blood: 00x003
Internal machine — reachable only by pivoting from the entry host. It is not directly scannable from the internet, so external scans return filtered. This is by design, not an outage.
Target IP Premium required
User Flag Pending
Root Flag Pending

Community

Community Hints

Grade A · 1000 pts Grade B · 700 pts Grade C · 400 pts Grade D · 200 pts + 150 credits on accept

Short, stage-specific nudges — directional, spoiler-light, no exact commands.

No community hints yet — be the first to add one!

Community

Community Walkthroughs

Grade A · 2500 pts Grade B · 1750 pts Grade C · 1000 pts Grade D · 500 pts + 300 credits on accept

🔒 Community walkthroughs are spoilers — capture the root flag on this machine to unlock them.