IPMI 2.0 Cipher Zero Authentication Bypass Scanner - Metasploit


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

Table Of Contents
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Module Overview

Name: IPMI 2.0 Cipher Zero Authentication Bypass Scanner
Module: auxiliary/scanner/ipmi/ipmi_cipher_zero
Source code: modules/auxiliary/scanner/ipmi/ipmi_cipher_zero.rb
Disclosure date: 2013-06-20
Last modification time: 2021-01-28 10:35:25 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 623
List of CVEs: CVE-2013-4782

This module identifies IPMI 2.0-compatible systems that are vulnerable to an authentication bypass vulnerability through the use of cipher zero.

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/ipmi/ipmi_cipher_zero
msf auxiliary(ipmi_cipher_zero) > show options
    ... show and set options ...
msf auxiliary(ipmi_cipher_zero) > set RHOSTS ip-range
msf auxiliary(ipmi_cipher_zero) > exploit

Other examples of setting the RHOSTS option:

Example 1:

msf auxiliary(ipmi_cipher_zero) > set RHOSTS 192.168.1.3-192.168.1.200

Example 2:

msf auxiliary(ipmi_cipher_zero) > set RHOSTS 192.168.1.1/24

Example 3:

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

Required Options

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

Knowledge Base

The ipmi_cipher_zero module is used to find IPMI 2.0-compatible systems that are vulnerable to an authentication bypass vulnerability through the use of IPMI cipher zero, which means no cipher is used at all.

Vulnerable Devices

This is an error in the IPMI 2.0 specification itself, so any device BMC fully implementing IPMI 2.0 will possibly have the vulnerable non-cipher enabled.

Verification Steps

Set RHOSTS to the target device or range and run:

msf > use auxiliary/scanner/ipmi/ipmi_cipher_zero
msf auxiliary(ipmi_cipher_zero) > set RHOSTS 192.168.1.2
RHOSTS => 192.168.1.2
msf auxiliary(ipmi_cipher_zero) > run

[*] Sending IPMI requests to 192.168.1.2->192.168.1.2 (1 hosts)
[*] 192.168.1.2:623 - IPMI - NOT VULNERABLE: Rejected cipher zero with error code 17

Go back to menu.

Msfconsole Usage

Here is how the scanner/ipmi/ipmi_cipher_zero auxiliary module looks in the msfconsole:

msf6 > use auxiliary/scanner/ipmi/ipmi_cipher_zero

msf6 auxiliary(scanner/ipmi/ipmi_cipher_zero) > show info

       Name: IPMI 2.0 Cipher Zero Authentication Bypass Scanner
     Module: auxiliary/scanner/ipmi/ipmi_cipher_zero
    License: Metasploit Framework License (BSD)
       Rank: Normal
  Disclosed: 2013-06-20

Provided by:
  Dan Farmer <[email protected]>
  hdm <[email protected]>

Check supported:
  No

Basic options:
  Name       Current Setting  Required  Description
  ----       ---------------  --------  -----------
  BATCHSIZE  256              yes       The number of hosts to probe in each set
  RHOSTS                      yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT      623              yes       The target port (UDP)
  THREADS    10               yes       The number of concurrent threads

Description:
  This module identifies IPMI 2.0-compatible systems that are 
  vulnerable to an authentication bypass vulnerability through the use 
  of cipher zero.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2013-4782
  http://fish2.com/ipmi/cipherzero.html
  OSVDB (93038)
  OSVDB (93039)
  OSVDB (93040)

Module Options

This is a complete list of options available in the scanner/ipmi/ipmi_cipher_zero auxiliary module:

msf6 auxiliary(scanner/ipmi/ipmi_cipher_zero) > show options

Module options (auxiliary/scanner/ipmi/ipmi_cipher_zero):

   Name       Current Setting  Required  Description
   ----       ---------------  --------  -----------
   BATCHSIZE  256              yes       The number of hosts to probe in each set
   RHOSTS                      yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT      623              yes       The target port (UDP)
   THREADS    10               yes       The number of concurrent threads

Advanced Options

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

msf6 auxiliary(scanner/ipmi/ipmi_cipher_zero) > show advanced

Module advanced options (auxiliary/scanner/ipmi/ipmi_cipher_zero):

   Name                   Current Setting  Required  Description
   ----                   ---------------  --------  -----------
   CHOST                                   no        The local client address
   CPORT                                   no        The local client port
   ScannerMaxResends      10               yes       The maximum times to resend a packet when out of buffers
   ScannerRecvInterval    30               yes       The maximum numbers of sends before entering the processing loop
   ScannerRecvQueueLimit  100              yes       The maximum queue size before breaking out of the processing loop
   ScannerRecvWindow      15               yes       The number of seconds to wait post-scan to catch leftover replies
   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/ipmi/ipmi_cipher_zero module can do:

msf6 auxiliary(scanner/ipmi/ipmi_cipher_zero) > show actions

Auxiliary actions:

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

Evasion Options

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

msf6 auxiliary(scanner/ipmi/ipmi_cipher_zero) > show evasion

Module evasion options:

   Name  Current Setting  Required  Description
   ----  ---------------  --------  -----------

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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.

<SHOST>:<SPORT> - IPMI - NOT VULNERABLE: Rejected cipher zero with error code <INFO.ERROR_CODE>

Here is a relevant code snippet related to the "<SHOST>:<SPORT> - IPMI - NOT VULNERABLE: Rejected cipher zero with error code <INFO.ERROR_CODE>" error message:

67:	        :proto => 'udp',
68:	        :sname => 'ipmi',
69:	        :name  => 'IPMI 2.0 RAKP Cipher Zero Authentication Bypass',
70:	        :info  => "Accepted a session open request for cipher zero",
71:	        :refs  => self.references
72:	      )
73:	    else
74:	      vprint_status("#{shost}:#{sport} - IPMI - NOT VULNERABLE: Rejected cipher zero with error code #{info.error_code}")
75:	    end
76:	  end
77:	end

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References

See Also

Check also the following modules related to this module:

Related Nessus plugins:

Authors

  • Dan Farmer <zen[at]fish2.com>
  • hdm

Version

This page has been produced using Metasploit Framework version 6.1.24-dev. For more modules, visit the Metasploit Module Library.

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