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Microsoft IIS FTP Server Encoded Response Overflow Trigger

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Microsoft IIS FTP Server Encoded Response Overflow Trigger

Disclosed
12/21/2010
Created
05/30/2018

Description

This module triggers a heap overflow when processing a specially crafted FTP request containing Telnet IAC (0xff) bytes. When constructing the response, the Microsoft IIS FTP Service overflows the heap buffer with 0xff bytes. This issue can be triggered pre-auth and may in fact be exploitable for remote code execution.

Author(s)

  • Matthew Bergin
  • jduck <jduck@metasploit.com>

Development

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/iis75_ftpd_iac_bof
msf auxiliary(iis75_ftpd_iac_bof) > show actions
    ...actions...
msf auxiliary(iis75_ftpd_iac_bof) > set ACTION < action-name >
msf auxiliary(iis75_ftpd_iac_bof) > show options
    ...show and set options...
msf auxiliary(iis75_ftpd_iac_bof) > run

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