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Microsoft IIS FTP Server LIST Stack Exhaustion

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Microsoft IIS FTP Server LIST Stack Exhaustion



This module triggers Denial of Service condition in the Microsoft Internet Information Services (IIS) FTP Server 5.0 through 7.0 via a list (ls) -R command containing a wildcard. For this exploit to work in most cases, you need 1) a valid ftp account: either read-only or write-access account 2) the "FTP Publishing" must be configured as "manual" mode in startup type 3) there must be at least one directory under FTP root directory. If your provided an FTP account has write-access privilege and there is no single directory, a new directory with random name will be created prior to sending exploit payload.


  • Kingcope
  • Myo Soe


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/dos/windows/ftp/iis_list_exhaustion
msf auxiliary(iis_list_exhaustion) > show actions
msf auxiliary(iis_list_exhaustion) > set ACTION < action-name >
msf auxiliary(iis_list_exhaustion) > show options
    ...show and set options...
msf auxiliary(iis_list_exhaustion) > 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