Home / exploits Fog-dragonfly-0.8.2 Ruby Gem Remote Command Injection
Posted on 01 September 2013
<pre>TITLE: Remote Command Injection in fog-dragonfly-0.8.2 Ruby Gem Credit: Larry W. Cashdollar, @_larry0 Date: 8/16/2013 CVE: TBD Download: https://rubygems.org/gems/fog-dragonfly Description: "Dragonfly is an on-the-fly Rack-based image handling framework. It is suitable for use with Rails, Sinatra and other web frameworks. Although it's mainly used for images, it can handle any content type." Unescaped user supplied input is passed to the command line for shell execution: from fog-dragonfly-0.8.2/lib/dragonfly/imagemagickutils.rb: 20 def convert(tempobject, args='', format=nil) 21 tempfile = newtempfile(format) 22 run "#{convertcommand} #{args} #{tempobject.path} #{tempfile.path}" 23 tempfile 24 end . . . 61 def run(command) 62 log.debug("Running command: #{command}") if ImageMagickUtils.log_commands 63 begin 64 result = #{command} Vendor Notified: 8/16/2013 </pre>
