FreeBSD : twiki -- remote Perl code execution (21ce1840-6107-11e4-9e84-0022156e8794) - Nessus

Critical Plugin ID: 78816

This page contains detailed information about the FreeBSD : twiki -- remote Perl code execution (21ce1840-6107-11e4-9e84-0022156e8794) 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: 78816
Name: FreeBSD : twiki -- remote Perl code execution (21ce1840-6107-11e4-9e84-0022156e8794)
Filename: freebsd_pkg_21ce1840610711e49e840022156e8794.nasl
Vulnerability Published: 2014-10-09
This Plugin Published: 2014-11-03
Last Modification Time: 2021-01-06
Plugin Version: 1.10
Plugin Type: local
Plugin Family: FreeBSD Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/FreeBSD/pkg_info, Host/FreeBSD/release, Host/local_checks_enabled

Vulnerability Information

Severity: Critical
Vulnerability Published: 2014-10-09
Patch Published: 2014-10-31
CVE [?]: CVE-2014-7236
CPE [?]: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:twiki

Synopsis

The remote FreeBSD host is missing a security-related update.

Description

TWiki developers report :

The debugenableplugins request parameter allows arbitrary Perl code execution.

Using an HTTP GET request towards a TWiki server, add a specially crafted debugenableplugins request parameter to TWiki's view script (typically port 80/TCP). Prior authentication may or may not be necessary.

A remote attacker can execute arbitrary Perl code to view and modify any file the webserver user has access to.

Example: http://www.example.com/do/view/Main/WebHome?debugenableplugins=BackupR estorePlugin%3bprint('Content-Type:text/html\r\n\r\nVulnerable!')%3bex it

The TWiki site is vulnerable if you see a page with text 'Vulnerable!'.

Solution

Update the affected package.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub, D2 Elliot)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the FreeBSD : twiki -- remote Perl code execution (21ce1840-6107-11e4-9e84-0022156e8794) vulnerability:

Metasploit: exploit/unix/http/twiki_debug_plugins
[TWiki Debugenableplugins Remote Code Execution]
Exploit-DB: exploits/php/remote/36438.rb
[EDB-36438: TWiki Debugenableplugins - Remote Code Execution (Metasploit)]
GitHub: https://github.com/m0nad/CVE-2014-7236_Exploit
[CVE-2014-7236: Exploit for CVE-2014-7236]
D2 Elliot: twiki_debugenableplugins_rce.html
[TWiki debugenableplugins 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:N

CVSS Base Score:	6.4 (Medium)
Impact Subscore:	4.9
Exploitability Subscore:	10.0
CVSS Temporal Score:	NA (None)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.4 (Medium)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS Base Score:	9.1 (Critical)
Impact Subscore:	5.2
Exploitability Subscore:	3.9
CVSS Temporal Score:	NA (None)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	9.1 (Critical)

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2020 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

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

if (description)
{
  script_id(78816);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2014-7236");

  script_name(english:"FreeBSD : twiki -- remote Perl code execution (21ce1840-6107-11e4-9e84-0022156e8794)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"TWiki developers report :

The debugenableplugins request parameter allows arbitrary Perl code
execution.

Using an HTTP GET request towards a TWiki server, add a specially
crafted debugenableplugins request parameter to TWiki's view script
(typically port 80/TCP). Prior authentication may or may not be
necessary.

A remote attacker can execute arbitrary Perl code to view and modify
any file the webserver user has access to.

Example:
http://www.example.com/do/view/Main/WebHome?debugenableplugins=BackupR
estorePlugin%3bprint('Content-Type:text/html\r\n\r\nVulnerable!')%3bex
it

The TWiki site is vulnerable if you see a page with text
'Vulnerable!'."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://twiki.org/cgi-bin/view/Codev/SecurityAlert-CVE-2014-7236"
  );
  # https://vuxml.freebsd.org/freebsd/21ce1840-6107-11e4-9e84-0022156e8794.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?e14ddd1d"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"d2_elliot_name", value:"TWiki debugenableplugins RCE");
  script_set_attribute(attribute:"exploit_framework_d2_elliot", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'TWiki Debugenableplugins Remote Code Execution');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:twiki");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/10/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/10/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"twiki<5.1.4_1,1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_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/freebsd_pkg_21ce1840610711e49e840022156e8794.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\freebsd_pkg_21ce1840610711e49e840022156e8794.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/freebsd_pkg_21ce1840610711e49e840022156e8794.nasl

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How to Run

Here is how to run the FreeBSD : twiki -- remote Perl code execution (21ce1840-6107-11e4-9e84-0022156e8794) 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 FreeBSD Local Security Checks plugin family.
On the right side table select FreeBSD : twiki -- remote Perl code execution (21ce1840-6107-11e4-9e84-0022156e8794) plugin ID 78816.
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 freebsd_pkg_21ce1840610711e49e840022156e8794.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a freebsd_pkg_21ce1840610711e49e840022156e8794.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - freebsd_pkg_21ce1840610711e49e840022156e8794.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 freebsd_pkg_21ce1840610711e49e840022156e8794.nasl -t <IP/HOST>

Go back to menu.

References

See also:

Similar and related Nessus plugins:

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Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file freebsd_pkg_21ce1840610711e49e840022156e8794.nasl version 1.10. For more plugins, visit the Nessus Plugin Library.

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FreeBSD : twiki -- remote Perl code execution (21ce1840-6107-11e4-9e84-0022156e8794) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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