https://github.com/theunknownsoul/cve-2023-23397-pow

Proof of Work of CVE-2023-23397 for vulnerable Microsoft Outlook client application.
https://github.com/theunknownsoul/cve-2023-23397-pow

exploitation hacking msoutlook netntlm smb

Last synced: 11 days ago
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Proof of Work of CVE-2023-23397 for vulnerable Microsoft Outlook client application.

• Host: GitHub
• URL: https://github.com/theunknownsoul/cve-2023-23397-pow
• Owner: TheUnknownSoul
• Created: 2024-03-20T09:49:01.000Z (8 months ago)
• Default Branch: master
• Last Pushed: 2024-03-20T10:39:04.000Z (8 months ago)
• Last Synced: 2024-03-21T11:09:20.003Z (8 months ago)
• Topics: exploitation, hacking, msoutlook, netntlm, smb
• Language: Python
• Homepage:
• Size: 5.86 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# CVE-2023-23397-PoW

Proof of Work of CVE-2023-23397 for vulnerable Microsoft Outlook client application.

For educational and research puproses only.

## CVE-2023-23397 preview

This CVE aimed to retrieve NetNTLM hash logged in user from Microsoft Outlook client version 2016 except last patched version.

## Steps to reproduce and successful exploitation

- Download any sound file to smb machine which will be deployed as SMB share.

- Start smb share.

- Create an applointment in MS Outlook. In home menu New Item -> Appointment. Below Time Zone icon placed ahcor hyperlink with sound reminder. Click on it, add sound file from smb share. Add recipients with Invite attendees button.

- Send message

- First hash will be received from user who create an appointment and added sound file from share. Next hashes will be from users who **OPEN** invitation.

## About exploit

### How to run

```python3 exploit.py -p 192.168.0.5 -f recipients.txt```

Help menu with description. 

```python3 exploit.py -h```

Exploit was written for mass delivery test and works with chance 50/50. This is because Python library independentsoft.msg for creating appointment and objects for Outlook attaches file as **message** and MS Outlook recognizes it not as native. That's why retrieving hash not always completing successfully.

## Limitations

During test I faced with some technical hicaps and limitations. The are:

- limitations for mass email delivery

- network limitations

- weak connection

- self-signed certificate or security limitations for certificate validation