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Flash "Rosetta" JSONP GET/POST Response Disclosure

A website that serves a JSONP endpoint that accepts a custom alphanumeric callback of 1200 chars can be abused to serve an encoded swf payload that steals the contents of a same-domain URL. Flash < is required. This module spins up a web server that, upon navigation from a user, attempts to abuse the specified JSONP endpoint URLs by stealing the response from GET requests to STEAL_URLS.

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Module Name



  • Michele Spagnuolo
  • joev <joev [at]>



  • WebServer



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

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