Vulnerabilities > CVE-2017-6377 - Incorrect Authorization vulnerability in Drupal

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 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(97808);
  script_version("3.8");
  script_cvs_date("Date: 2018/12/19 13:21:18");

  script_cve_id("CVE-2017-6377", "CVE-2017-6379", "CVE-2017-6381");

  script_name(english:"FreeBSD : drupal8 -- multiple vulnerabilities (2730c668-0b1c-11e7-8d52-6cf0497db129)");
  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:
"Drupal Security Team reports :

CVE-2017-6377: Editor module incorrectly checks access to inline
private files

CVE-2017-6379: Some admin paths were not protected with a CSRF token

CVE-2017-6381: Remote code execution"
  );
  # https://www.drupal.org/SA-2017-001
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?aba24102"
  );
  # https://vuxml.freebsd.org/freebsd/2730c668-0b1c-11e7-8d52-6cf0497db129.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?06b93036"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:drupal8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/03/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/03/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2018 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:"drupal8<8.2.7")) 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");

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

include("compat.inc");

if (description)
{
  script_id(97942);
  script_version("1.7");
  script_cvs_date("Date: 2019/11/13");

  script_cve_id("CVE-2017-6377", "CVE-2017-6379", "CVE-2017-6381");
  script_bugtraq_id(96919);

  script_name(english:"Drupal 8.x < 8.2.7 Multiple Vulnerabilities (SA-2017-001)");
  script_summary(english:"Checks the version of Drupal.");

  script_set_attribute(attribute:"synopsis", value:
"A PHP application running on the remote web server is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Drupal running on the remote web server is 8.x prior to
8.2.7. It is, therefore, affected by the multiple vulnerabilities :

  - A security bypass vulnerability exists in the editor
    module due to a failure to properly check access
    restrictions when adding private files with a configured
    text editor (e.g. CKEDITOR). An unauthenticated, remote
    attacker can exploit this to bypass access restrictions
    and disclose arbitrary files. (CVE-2017-6377)

  - A cross-site request forgery (XSRF) vulnerability exists
    as HTTP requests do not require multiple steps, explicit
    confirmation, or a unique token when performing certain
    sensitive actions. An unauthenticated, remote attacker
    can exploit this, by convincing a user to follow a
    specially crafted link, to cause the user to disable
    some blocks on sites or perform additional unintended
    actions. (CVE-2017-6379)

  - An unspecified flaw exists in the PHPUnit component that
    allows an unauthenticated, remote attacker to execute
    arbitrary code. Note that this vulnerability may only
    impact versions prior to 8.2.2. (CVE-2017-6381)

Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"https://www.drupal.org/SA-2017-001");
  script_set_attribute(attribute:"see_also", value:"https://www.drupal.org/project/drupal/releases/8.2.7");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Drupal version 8.2.7 or later. Additionally, as a
workaround for CVE-2017-6381, remove the /vendor/phpunit directory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:ND");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:X");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/03/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/03/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/24");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:drupal:drupal");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("drupal_detect.nasl");
  script_require_keys("www/PHP", "installed_sw/Drupal", "Settings/ParanoidReport");
  script_require_ports("Services/www", 80, 443);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("install_func.inc");

app = "Drupal";
get_install_count(app_name:app, exit_if_zero:TRUE);

if (report_paranoia < 2) audit(AUDIT_PARANOID);

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

install = get_single_install(
  app_name : app,
  port     : port,
  exit_if_unknown_ver : TRUE
);

dir = install['path'];
version = install['version'];
url = build_url(qs:dir, port:port);
fix = NULL;

if (version == "8") audit(AUDIT_VER_NOT_GRANULAR, app, port, version);

if (ver_compare(ver:version, minver:"8.0", fix:"8.2.7", strict:FALSE) < 0)
  fix = "8.2.7";

if (isnull(fix))
  audit(AUDIT_WEB_APP_NOT_AFFECTED, app, url, version);

security_report_v4(
    port:port,
    severity:SECURITY_WARNING,
    xsrf:TRUE,
    extra:
      '\n  URL               : ' + url +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : ' + fix +
      '\n'
);