Exploiting Ubuntu Sudo Vulnerability: A Step-by-Step Guide

Ubuntu Sudo vulnerability is a serious issue that can allow attackers to bypass Sudo rules and escalate their privileges to root. In this guide, we will demonstrate how to identify a vulnerable Sudo version and exploit it to perform privilege escalation.

Identifying the Running Version of Sudo

To identify the running version of Sudo on your Ubuntu system, you can use the following command:

```

sudo -V | grep 'Sudo ver'

```

This command will display the current version of Sudo installed on your system. For example, if your output shows `Sudo ver 1.8.25p1`, it means that your system is running an older version of Sudo that may be vulnerable to exploitation.

The Exploit

The exploit involves issuing a specific command using the `sudo` utility. By adding the `-u#-1` option to the `sudo` command, you can bypass the Sudo rule and execute a command as another user or group.

For example, let's say we want to allow the `john` user to execute the `cp` command as the `jack` user/group. We can issue the following command:

```

sudo -u#-1

```

This will mean that the `john` user can execute the `cp` command as the `jack` user/group.

Understanding Sudo Rules

Sudo rules are used to specify which commands a user or group can run and as what user or group. The `!` symbol is used to specify that a user should not be able to run a certain command as root (or any other user).

For example, let's say we have the following Sudo rule:

```

john !cp

```

This rule specifies that the `john` user cannot run the `cp` command as root. However, if we use the exploit mentioned earlier, we can bypass this rule and execute the `cp` command as another user or group.

In conclusion, Ubuntu Sudo vulnerability is a serious issue that can be exploited to bypass Sudo rules and escalate privileges to root. By identifying the running version of Sudo and using the exploit demonstrated in this guide, you can perform privilege escalation on your Ubuntu system. However, it's important to note that this exploit should only be used for legitimate purposes and not for malicious activities.

Ubuntu sudo exploit