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KarjaSoft Sami FTP Server v2.0.2 USER Overflow

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KarjaSoft Sami FTP Server v2.0.2 USER Overflow

Disclosed
01/24/2006
Created
05/30/2018

Description

This module exploits an unauthenticated stack buffer overflow in KarjaSoft Sami FTP Server version 2.0.2 by sending an overly long USER string during login. The payload is triggered when the administrator opens the application GUI. If the GUI window is open at the time of exploitation, the payload will be executed immediately. Keep this in mind when selecting payloads. The application will crash following execution of the payload and will not restart automatically. When the application is restarted, it will re-execute the payload unless the payload has been manually removed from the SamiFTP.binlog log file. This module has been tested successfully on Sami FTP Server versions: 2.0.2 on Windows XP SP0 (x86); 2.0.2 on Windows 7 SP1 (x86); 2.0.2 on Windows 7 SP1 (x64); and 2.0.2 on Windows 10 (1909) (x64).

Author(s)

  • Muhammad Ahmed Siddiqui
  • Critical Security
  • n30m1nd
  • aushack <patrick@osisecurity.com.au>
  • bcoles <bcoles@gmail.com>

Platform

Windows

Architectures

x86

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 exploit/windows/ftp/sami_ftpd_user
msf exploit(sami_ftpd_user) > show targets
    ...targets...
msf exploit(sami_ftpd_user) > set TARGET < target-id >
msf exploit(sami_ftpd_user) > show options
    ...show and set options...
msf exploit(sami_ftpd_user) > exploit

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