Dahua DVR Auth Bypass Scanner - Metasploit


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

Table Of Contents
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Module Overview

Name: Dahua DVR Auth Bypass Scanner
Module: auxiliary/scanner/misc/dahua_dvr_auth_bypass
Source code: modules/auxiliary/scanner/misc/dahua_dvr_auth_bypass.rb
Disclosure date: -
Last modification time: 2019-03-05 03:38:51 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 37777
List of CVEs: CVE-2013-6117

Scans for Dahua-based DVRs and then grabs settings. Optionally resets a user's password and clears the device logs

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

Other examples of setting the RHOSTS option:

Example 1:

msf auxiliary(dahua_dvr_auth_bypass) > set RHOSTS 192.168.1.3-192.168.1.200

Example 2:

msf auxiliary(dahua_dvr_auth_bypass) > set RHOSTS 192.168.1.1/24

Example 3:

msf auxiliary(dahua_dvr_auth_bypass) > 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/misc/dahua_dvr_auth_bypass auxiliary module looks in the msfconsole:

msf6 > use auxiliary/scanner/misc/dahua_dvr_auth_bypass

msf6 auxiliary(scanner/misc/dahua_dvr_auth_bypass) > show info

       Name: Dahua DVR Auth Bypass Scanner
     Module: auxiliary/scanner/misc/dahua_dvr_auth_bypass
    License: Metasploit Framework License (BSD)
       Rank: Normal

Provided by:
  Tyler Bennett - Talos Consulting
  Jake Reynolds - Depth Security
  Jon Hart <[email protected]>
  Nathan McBride

Available actions:
  Name     Description
  ----     -----------
  CHANNEL  Obtain the channel/camera information from the DVR
  DDNS     Obtain the DDNS settings from the DVR
  EMAIL    Obtain the email settings from the DVR
  GROUP    Obtain the group information the DVR
  NAS      Obtain the NAS settings from the DVR
  RESET    Reset an existing user's password on the DVR
  SERIAL   Obtain the serial number from the DVR
  USER     Obtain the user information from the DVR
  VERSION  Obtain the version of the DVR

Check supported:
  No

Basic options:
  Name        Current Setting  Required  Description
  ----        ---------------  --------  -----------
  CLEAR_LOGS  true             yes       Clear the DVR logs when we're done?
  PASSWORD                     no        A password to reset the user with, if not set a random pass will be generated.
  RHOSTS                       yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT       37777            yes       The target port (TCP)
  THREADS     1                yes       The number of concurrent threads (max one per host)
  USERNAME    888888           no        A username to reset

Description:
  Scans for Dahua-based DVRs and then grabs settings. Optionally 
  resets a user's password and clears the device logs

References:
  https://nvd.nist.gov/vuln/detail/CVE-2013-6117
  https://depthsecurity.com/blog/dahua-dvr-authentication-bypass-cve-2013-6117

Module Options

This is a complete list of options available in the scanner/misc/dahua_dvr_auth_bypass auxiliary module:

msf6 auxiliary(scanner/misc/dahua_dvr_auth_bypass) > show options

Module options (auxiliary/scanner/misc/dahua_dvr_auth_bypass):

   Name        Current Setting  Required  Description
   ----        ---------------  --------  -----------
   CLEAR_LOGS  true             yes       Clear the DVR logs when we're done?
   PASSWORD                     no        A password to reset the user with, if not set a random pass will be generated.
   RHOSTS                       yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT       37777            yes       The target port (TCP)
   THREADS     1                yes       The number of concurrent threads (max one per host)
   USERNAME    888888           no        A username to reset

Auxiliary action:

   Name     Description
   ----     -----------
   VERSION  Obtain the version of the DVR

Advanced Options

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

msf6 auxiliary(scanner/misc/dahua_dvr_auth_bypass) > show advanced

Module advanced options (auxiliary/scanner/misc/dahua_dvr_auth_bypass):

   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/misc/dahua_dvr_auth_bypass module can do:

msf6 auxiliary(scanner/misc/dahua_dvr_auth_bypass) > show actions

Auxiliary actions:

   Name     Description
   ----     -----------
   CHANNEL  Obtain the channel/camera information from the DVR
   DDNS     Obtain the DDNS settings from the DVR
   EMAIL    Obtain the email settings from the DVR
   GROUP    Obtain the group information the DVR
   NAS      Obtain the NAS settings from the DVR
   RESET    Reset an existing user's password on the DVR
   SERIAL   Obtain the serial number from the DVR
   USER     Obtain the user information from the DVR
   VERSION  Obtain the version of the DVR

Evasion Options

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

msf6 auxiliary(scanner/misc/dahua_dvr_auth_bypass) > 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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References

See Also

Check also the following modules related to this module:

Authors

  • Tyler Bennett - Talos Consulting
  • Jake Reynolds - Depth Security
  • Jon Hart <jon_hart[at]rapid7.com>
  • Nathan McBride

Version

This page has been produced using Metasploit Framework version 6.2.7-dev. For more modules, visit the Metasploit Module Library.

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