
Name : Killian Munt-Buron and Naji Ullah Abbasi
CVE-2017-7269 is a buffer overflow vulnerability in Microsoft Windows Server 2003 R2.
The vulnerability is in the ScStoragePathFromUrl function in the WebDAV.
This vulnerability allows to execute arbitrary code via a long header.
The headers starts by if: <http://
Use a iso file (link to download : https://archive.org/details/en_windows_server_2003_standard)
Control Panel => Add or Remove Programs = > Add/Remove Windows Components
Select Application Server, after click Details.
Select Internet Information Services (IIS)
Verify that Common files and World Wide Web Service are selected.
To verify that IIS has been installed, open with ethernet explorer this url: http://localhost/
If you have followed the instruction, you have this screen:

Go to Internet Information Services Manager => click on the device name => go Web service extension => right-click WebDAV and allowed

We have the attacker machine, with the Ubuntu VM :

And the victim, with the Windows VM :

From the attacker machine, we can see the victim using Nmap :

We tried to recreate the vulnerability but We encountered an issue.
In the victim machine, we create a directory /webdav.

And we add read, write and directory browsing folder permissions :

With cadaver, a WebdAV client, we can see that the communication works :


First, we use a script to see if the server answer with a PROFIND requests :
import socket
host = "192.168.79.153"
port = 80
request = (
"PROPFIND /webdav/ HTTP/1.1\r\n"
"Host: {host}\r\n"
"Content-Length: 0\r\n"
"Content-Type: text/xml\r\n"
"Depth: 0\r\n"
"Translate: f\r\n"
"\r\n"
).format(host=host)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host, port))
s.send(request.encode())
response = s.recv(4096)
s.close()
print(response.decode())
We have this :
killian@vmlinux:~$ python3 mis3.py
HTTP/1.1 207 Multi-Status
Date: Sun, 18 Jan 2026 19:22:56 GMT
Server: Microsoft-IIS/6.0
Content-Type: text/xml
Transfer-Encoding: chunked
After that, we use Metasploit, to generate the buffer overflow :

But we encountered a probleme with Internet Information Services (IIS)
We have this in the log :
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 207 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
2026-01-19 13:19:50 192.168.79.153 PROPFIND /webdav - 80 - 192.168.79.154 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+14.7;+rv:133.0)+Gecko/20100101+Firefox/133.0 500 0 0
We have many HTTP 500 Internal Server Error responses. This indicates that IIS encountered internal exceptions while processing malformed WebDAV requests, which is normal for the CVE.
We tried to understand the problem, use other python script, payload with metasploit, but always the same problem.
We have verified that the Server Windows 2003 is vulnerable with this :
wmic qfe list | find "KB4011783"
For the windows firewall, the server is not equipped with it, according us researchers.
Although full remote code execution was not achieved, the experimental results demonstrate that the vulnerable WebDAV code path associated with CVE-2017-7269 is reachable on the target system.
The server consistently processes malformed PROPFIND requests and returns internal server errors (HTTP 500), indicating memory handling issues consistent with the documented vulnerability.
The inability to achieve reliable exploitation is likely due to environmental factors such as operating system configuration or undocumented security mitigations.
This project was conducted strictly in a controlled laboratory environment for educational purposes only.