> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/privesc/docker-escape/docker-password-reuse-linux-privilege-escalation.md).
# Docker Password Reuse - Linux Privilege Escalation
Docker Escape (Password Reuse) notes for Linux privilege escalation, with enumeration steps, exploitation examples, and reporting-focused validation.
## What It Is
Docker escape paths abuse container misconfiguration, mounted host resources, default credentials, reused passwords, or excessive container privileges. The objective is to move from the container context to host-level access. This specific page focuses on **Docker Escape (Password Reuse)** and keeps the exploitation flow practical: identify the condition, validate it safely, then run the smallest payload needed to prove impact.
## Enumeration
Start by confirming the local context and the exact misconfiguration before running the exploit path.
```bash
id
cat /proc/1/cgroup
mount
ls -la /var/run/docker.sock 2>/dev/null
```
## Examples
Docker escape:
We observe that the IP address is not that of the machine (IP machine: 10.10.11.130; IP container Docker: 172.19.0.2).
We will scan the ports manually, since `nmap` is not installed on the gateway (172.19.0.1) :
```bash
for PORT in {0..1000}; do timeout 1 bash -c "/dev/null" 2>/dev/null && echo "port $PORT is open"; done
```
We observe that port 22 is open (internal), so we can connect via SSH.
```bash
for PORT in {0..1000}; do timeout 1 bash -c "/dev/null" 2>/dev/null && echo "port $PORT is open"; done
```
If we try to log in with the root account using the `superadministrator` password, we cannot log in, but with `augustus`, we manage to get a shell.
---
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