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Ultra Shareware Office Control ActiveX HttpUpload Buffer Overflow

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Ultra Shareware Office Control ActiveX HttpUpload Buffer Overflow



This module exploits a stack-based buffer overflow in Ultra Shareware's Office Control. When processing the 'HttpUpload' method, the arguments are concatenated together to form a command line to run a bundled version of cURL. If the command fails to run, a stack-based buffer overflow occurs when building the error message. This is due to the use of sprintf() without proper bounds checking. NOTE: Due to input restrictions, this exploit uses a heap-spray to get the payload into memory unmodified.


  • shinnai
  • jduck <jduck@metasploit.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 exploit/windows/browser/ultraoffice_httpupload
msf exploit(ultraoffice_httpupload) > show targets
msf exploit(ultraoffice_httpupload) > set TARGET < target-id >
msf exploit(ultraoffice_httpupload) > show options
    ...show and set options...
msf exploit(ultraoffice_httpupload) > exploit

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