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Internet Explorer Iframe Sandbox File Name Disclosure Vulnerability

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Internet Explorer Iframe Sandbox File Name Disclosure Vulnerability

Disclosed
08/09/2016
Created
05/30/2018

Description

It was found that Internet Explorer allows the disclosure of local file names. This issue exists due to the fact that Internet Explorer behaves different for file:// URLs pointing to existing and non-existent files. When used in combination with HTML5 sandbox iframes it is possible to use this behavior to find out if a local file exists. This technique only works on Internet Explorer 10 & 11 since these support the HTML5 sandbox. Also it is not possible to do this from a regular website as file:// URLs are blocked all together. The attack must be performed locally (works with Internet zone Mark of the Web) or from a share.

Author(s)

  • Yorick Koster

Platform

Windows

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

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