module

ActiveFax (ActFax) 4.3 Client Importer Buffer Overflow

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Disclosed
2012-08-28
Created
2018-05-30

Description

This module exploits a vulnerability in ActiveFax Server. The vulnerability is
a stack based buffer overflow in the "Import Users from File" function, due to the
insecure usage of strcpy while parsing the csv formatted file. The module creates a
.exp file that must be imported with ActiveFax Server. It must be imported with the
default character set 'ECMA-94 / Latin 1 (ISO 8859)'. The module has been tested
successfully on ActFax Server 4.32 over Windows XP SP3 and Windows 7 SP1. In the
Windows XP case, when ActFax runs as a service, it will execute as SYSTEM.

Authors

Craig Freyman
Brandon Perry
juan vazquez juan.vazquez@metasploit.com

Platform

Windows

References

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/fileformat/actfax_import_users_bof
    msf exploit(actfax_import_users_bof) > show targets
        ...targets...
    msf exploit(actfax_import_users_bof) > set TARGET < target-id >
    msf exploit(actfax_import_users_bof) > show options
        ...show and set options...
    msf exploit(actfax_import_users_bof) > exploit
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