Menu

Individual skill

offensive-container-escape

Container escape and breakout techniques targeting Docker, containerd, and Podman runtimes. Covers privileged container breakout via host filesystem mount and nsenter, Docker socket abuse through /var/run/docker.sock, Linux capability exploitation including CAP_SYS_ADMIN, CAP_SYS_PTRACE, and CAP_NET_ADMIN, cgroup v1 notify_on_release escape, runc CVEs such as CVE-2019-5736 and CVE-2024-21626 Leaky Vessels, kernel exploits from within containers, and Dockerfile misconfigurations like --privileged and host namespace sharing. Includes enumeration with capsh, amicontained, deepce, CDK, and nsenter. Maps to MITRE ATT&CK T1611 Escape to Host. Use this skill when the engagement scope includes container breakout, Docker escape, container privilege escalation, host access from container, or when you land inside a containerized environment and need to reach the underlying host.

Skills/container/offensive-container-escape/SKILL.md

Read pinned source

Source commit a8de813edc9f66f60d44cfe42d47750e89d9930b

What was checked

Matches the observed repository HEAD
Yes
Scanner rules are current
Yes
Repository scan complete
No
Skill scan complete
No
Observed behavior
Network or broad shell
Last checked
Nov 2, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.

Repository context

Repository stars (not skill ratings)
10,483
Repository last updated
Oct 12, 2026
License
MIT

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files
Read excerpt

# Container Escape and Breakout

You have a shell inside a container. Your objective is to break out to the underlying host operating system. Container isolation relies on Linux namespaces, cgroups, seccomp profiles, AppArmor/SELinux, and dropped capabilities. Every misconfiguration in these layers is an escape vector. This skill walks you through systematic enumeration, exploitation of common misconfigurations, abuse of exposed runtime sockets, capability-based escapes, cgroup breakouts, and known CVEs against container runtimes.

## Quick Workflow

1. Confirm you are inside a container (check for `.dockerenv`, cgroup entries, PID 1 process).
2. Enumerate capabilities, mounts, namespaces, and sockets with automated tools.
3. Identify the escape vector: privileged mode, socket exposure, dangerous capabilities, cgroup misconfiguration, or vulnerable runtime.
4. Execute the breakout technique matching the vector.
5. Validate host access by reading `/etc/hostname`, checking PID namespace, or writing to host filesystem.
6. Pivot from host access to lateral movement across the cluster or infrastructure.

---