> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/privesc/sudoers/sudo-mosh-server-linux-privilege-escalation.md).

# Sudo (Mosh-Server) - Linux Privilege Escalation

Sudo (Mosh-Server) notes for Linux privilege escalation, with enumeration steps, exploitation examples, and reporting-focused validation.

## What It Is

Sudoers privilege escalation starts with the commands a user can run through `sudo`. Misconfigured binaries, unsafe script arguments, symlink handling, and vulnerable sudo versions can turn limited sudo rights into a root shell. This specific page focuses on **Sudo (Mosh-Server)** and keeps the exploitation flow practical: identify the condition, validate it safely, then run the smallest payload needed to prove impact.

## Enumeration

Start by confirming the local context and the exact misconfiguration before running the exploit path.

```bash
sudo -l
sudo --version
```

## Examples

By checking permissions with the `sudo -l` command, we discover that the user **svcMosh** can run the binary **mosh-server** with admin privileges without providing a password

```bash
sudo -l
```

<figure><img src="https://131707722-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-3eac0287a2f977e791fcbf25147faeccd1239e31%2Fimage%20(856).png?alt=media" alt=""><figcaption></figcaption></figure>

> Since you can run **mosh-server** as root, you can use this to connect to **mosh** using **sudo** to run the server as administrator.

The following command will run **mosh-server** with root privileges, then establish a connection with the client **mosh**:

```bash
mosh --server="sudo /usr/bin/mosh-server" localhost
```

This will allow **mosh** to connect to the **mosh-server** server that is running as root on **localhost**. Using this method, you will have privileged access to the machine with administrator rights.

<figure><img src="https://131707722-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-2e0b52c064410341185cadca3dbc89602379310d%2Fimage%20(857).png?alt=media" alt=""><figcaption></figcaption></figure>


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