Script http-iis-webdav-vuln

Script types: portrule
Categories: vuln, intrusive

Script Summary

Checks for a vulnerability in IIS 5.1/6.0 that allows arbitrary users to access secured WebDAV folders by searching for a password-protected folder and attempting to access it. This vulnerability was patched in Microsoft Security Bulletin MS09-020,

A list of well known folders (almost 900) is used by default. Each one is checked, and if returns an authentication request (401), another attempt is tried with the malicious encoding. If that attempt returns a successful result (207), then the folder is marked as vulnerable.

This script is based on the Metasploit auxiliary module auxiliary/scanner/http/wmap_dir_webdav_unicode_bypass

For more information on this vulnerability and script, see:

Script Arguments


The folder to start in; eg, "/web" will try "/web/xxx".


The filename of an alternate list of folders.


Selects a single folder to use, instead of using a built-in list.


See the documentation for the slaxml library., http.max-body-size, http.max-cache-size, http.max-pipeline, http.pipeline, http.truncated-ok, http.useragent

See the documentation for the http library.

smbdomain, smbhash, smbnoguest, smbpassword, smbtype, smbusername

See the documentation for the smbauth library.

Example Usage

nmap --script http-iis-webdav-vuln -p80,8080 <host>

Script Output

80/tcp open  http    syn-ack
|_ http-iis-webdav-vuln: WebDAV is ENABLED. Vulnerable folders discovered: /secret, /webdav



  • Ron Bowes
  • Andrew Orr

License: Same as Nmap--See