Open WAN-to-LAN proxy on AT&T routers - Metasploit


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

Table Of Contents
hide

Module Overview

Name: Open WAN-to-LAN proxy on AT&T routers
Module: auxiliary/scanner/wproxy/att_open_proxy
Source code: modules/auxiliary/scanner/wproxy/att_open_proxy.py
Disclosure date: 2017-08-31
Last modification time: 2022-01-23 15:28:32 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 49152
List of CVEs: CVE-2017-14117

This module is also known as SharknAT&To or sharknatto.

The Arris NVG589 and NVG599 routers configured with AT&T U-verse firmware 9.2.2h0d83 expose an un-authenticated proxy that allows connecting from WAN to LAN by MAC address.

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

Other examples of setting the RHOSTS option:

Example 1:

msf auxiliary(att_open_proxy) > set RHOSTS 192.168.1.3-192.168.1.200

Example 2:

msf auxiliary(att_open_proxy) > set RHOSTS 192.168.1.1/24

Example 3:

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

Required Options

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

  • rhosts: The target address

Go back to menu.

Msfconsole Usage

Here is how the scanner/wproxy/att_open_proxy auxiliary module looks in the msfconsole:

msf6 > use auxiliary/scanner/wproxy/att_open_proxy

msf6 auxiliary(scanner/wproxy/att_open_proxy) > show info

       Name: Open WAN-to-LAN proxy on AT&T routers
     Module: auxiliary/scanner/wproxy/att_open_proxy
    License: Metasploit Framework License (BSD)
       Rank: Normal
  Disclosed: 2017-08-31

Provided by:
  Joseph HutchinsJon Hart <jon_hart[AT]rapid7.com>
  Adam Cammack <adam_cammack[AT]rapid7.com>

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>'
  THREADS     1                yes       The number of concurrent threads (max one per host)
  batch_size  200              no        Number of hosts to run in each batch
  rhosts                       yes       The target address
  rport       49152            yes       The target port

Description:
  The Arris NVG589 and NVG599 routers configured with AT&T U-verse 
  firmware 9.2.2h0d83 expose an un-authenticated proxy that allows 
  connecting from WAN to LAN by MAC address.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2017-14117
  https://www.nomotion.net/blog/sharknatto/
  https://blog.rapid7.com/2017/09/07/measuring-sharknat-to-exposures/#vulnerability5port49152tcpexposure

Also known as:
  SharknAT&To
  sharknatto

Module Options

This is a complete list of options available in the scanner/wproxy/att_open_proxy auxiliary module:

msf6 auxiliary(scanner/wproxy/att_open_proxy) > show options

Module options (auxiliary/scanner/wproxy/att_open_proxy):

   Name        Current Setting  Required  Description
   ----        ---------------  --------  -----------
   RHOSTS                       yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   THREADS     1                yes       The number of concurrent threads (max one per host)
   batch_size  200              no        Number of hosts to run in each batch
   rhosts                       yes       The target address
   rport       49152            yes       The target port

Advanced Options

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

msf6 auxiliary(scanner/wproxy/att_open_proxy) > show advanced

Module advanced options (auxiliary/scanner/wproxy/att_open_proxy):

   Name                 Current Setting  Required  Description
   ----                 ---------------  --------  -----------
   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/wproxy/att_open_proxy module can do:

msf6 auxiliary(scanner/wproxy/att_open_proxy) > show actions

Auxiliary actions:

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

Evasion Options

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

msf6 auxiliary(scanner/wproxy/att_open_proxy) > show evasion

Module evasion options:

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

Go back to menu.

References

See Also

Check also the following modules related to this module:

Authors

  • Joseph HutchinsJon Hart <jon_hart[AT]rapid7.com>
  • Adam Cammack <adam_cammack[AT]rapid7.com>

Version

This page has been produced using Metasploit Framework version 6.2.29-dev. For more modules, visit the Metasploit Module Library.

Go back to menu.