GLSA-200507-03 : phpBB: Arbitrary command execution - Nessus

High Plugin ID: 18607

This page contains detailed information about the GLSA-200507-03 : phpBB: 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

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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: 18607
Name: GLSA-200507-03 : phpBB: Arbitrary command execution
Filename: gentoo_GLSA-200507-03.nasl
Vulnerability Published: 2005-07-05
This Plugin Published: 2005-07-05
Last Modification Time: 2021-01-06
Plugin Version: 1.20
Plugin Type: local
Plugin Family: Gentoo Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/Gentoo/qpkg-list, Host/Gentoo/release, Host/local_checks_enabled

Vulnerability Information

Severity: High
Vulnerability Published: 2005-07-05
Patch Published: 2005-07-04
CVE [?]: CVE-2005-2086
CPE [?]: cpe:/o:gentoo:linux, p-cpe:/a:gentoo:linux:phpBB

Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-200507-03 (phpBB: Arbitrary command execution)

Ron van Daal discovered that phpBB contains a vulnerability in the highlighting code. Impact :

Successful exploitation would grant an attacker unrestricted access to the PHP exec() or system() functions, allowing the execution of arbitrary commands with the rights of the web server. Workaround :

Please follow the instructions given in the phpBB announcement.

Solution

The phpBB package is no longer supported by Gentoo Linux and has been masked in the Portage repository, no further announcements will be issued regarding phpBB updates. Users who wish to continue using phpBB are advised to monitor and refer to www.phpbb.com for more information. To continue using the Gentoo-provided phpBB package, please refer to the Portage documentation on unmasking packages and upgrade to 2.0.16.

Public Exploits

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

Here's the list of publicly known exploits and PoCs for verifying the GLSA-200507-03 : phpBB: Arbitrary command execution vulnerability:

Metasploit: exploit/unix/webapp/phpbb_highlight
[phpBB viewtopic.php Arbitrary Code Execution]
Exploit-DB: exploits/php/webapps/16890.rb
[EDB-16890: phpBB - 'viewtopic.php' Arbitrary Code Execution (Metasploit)]
D2 Elliot: phpbb_rce.html
[Phpbb RCE]
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)

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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 Gentoo Linux Security Advisory GLSA 200507-03.
#
# The advisory text is Copyright (C) 2001-2019 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

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

if (description)
{
  script_id(18607);
  script_version("1.20");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2005-2086");
  script_xref(name:"GLSA", value:"200507-03");

  script_name(english:"GLSA-200507-03 : phpBB: Arbitrary command execution");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200507-03
(phpBB: Arbitrary command execution)

    Ron van Daal discovered that phpBB contains a vulnerability in the
    highlighting code.
  
Impact :

    Successful exploitation would grant an attacker unrestricted access to
    the PHP exec() or system() functions, allowing the execution of
    arbitrary commands with the rights of the web server.
  
Workaround :

    Please follow the instructions given in the phpBB announcement."
  );
  # http://www.phpbb.com/phpBB/viewtopic.php?f=14&t=302011
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.phpbb.com/community/viewtopic.php?f=14&t=302011"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200507-03"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"The phpBB package is no longer supported by Gentoo Linux and has been
    masked in the Portage repository, no further announcements will be
    issued regarding phpBB updates. Users who wish to continue using phpBB
    are advised to monitor and refer to www.phpbb.com for more information.
    To continue using the Gentoo-provided phpBB package, please refer to
    the Portage documentation on unmasking packages and upgrade to 2.0.16."
  );
  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:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"d2_elliot_name", value:"Phpbb RCE");
  script_set_attribute(attribute:"exploit_framework_d2_elliot", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'phpBB viewtopic.php Arbitrary 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_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:phpBB");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/07/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2005/07/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/07/05");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"www-apps/phpBB", unaffected:make_list("ge 2.0.16"), vulnerable:make_list("lt 2.0.16"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "phpBB");
}

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/gentoo_GLSA-200507-03.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\gentoo_GLSA-200507-03.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/gentoo_GLSA-200507-03.nasl

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How to Run

Here is how to run the GLSA-200507-03 : phpBB: 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 Gentoo Local Security Checks plugin family.
On the right side table select GLSA-200507-03 : phpBB: Arbitrary command execution plugin ID 18607.
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 gentoo_GLSA-200507-03.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a gentoo_GLSA-200507-03.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - gentoo_GLSA-200507-03.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 gentoo_GLSA-200507-03.nasl -t <IP/HOST>

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References

GLSA | Gentoo Linux Security Advisory:

200507-03

See also:

Similar and related Nessus plugins:

18928 - FreeBSD : phpbb -- remote PHP code execution vulnerability (4afacca1-eb9d-11d9-a8bd-000cf18bbe54)
18589 - phpBB < 2.0.16 viewtopic.php Highlighting Feature Arbitrary PHP Code Execution
15826 - GLSA-200411-32 : phpBB: Remote command execution
15827 - GLSA-200411-33 : TWiki: Arbitrary command execution
18647 - GLSA-200507-06 : TikiWiki: Arbitrary command execution through XML-RPC
22460 - GLSA-200609-16 : Tikiwiki: Arbitrary command execution
27553 - GLSA-200710-21 : TikiWiki: Arbitrary command execution
86137 - GLSA-201509-06 : Git: Arbitrary command execution
100446 - GLSA-201705-14 : Smb4K: Arbitrary command execution as root
125751 - GLSA-201906-01 : Exim: Remote command execution
134604 - GLSA-202003-27 : libssh: Arbitrary command execution

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file gentoo_GLSA-200507-03.nasl version 1.20. For more plugins, visit the Nessus Plugin Library.

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GLSA-200507-03 : phpBB: Arbitrary command execution - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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