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Microsoft IIS shortname vulnerability scanner

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Microsoft IIS shortname vulnerability scanner



The vulnerability is caused by a tilde character "~" in a GET or OPTIONS request, which could allow remote attackers to disclose 8.3 filenames (short names). In 2010, Soroush Dalili and Ali Abbasnejad discovered the original bug (GET request). This was publicly disclosed in 2012. In 2014, Soroush Dalili discovered that newer IIS installations are vulnerable with OPTIONS.


  • Soroush Dalili
  • Ali Abbasnejad
  • MinatoTW <shaks19jais@gmail.com>
  • egre55 <ianaustin@protonmail.com>


Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use auxiliary/scanner/http/iis_shortname_scanner
msf auxiliary(iis_shortname_scanner) > show actions
msf auxiliary(iis_shortname_scanner) > set ACTION < action-name >
msf auxiliary(iis_shortname_scanner) > show options
    ...show and set options...
msf auxiliary(iis_shortname_scanner) > run 

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security