WordPress < 4.7.5 Multiple Vulnerabilities

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

include('compat.inc');

if (description)
{
  script_id(100298);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/05");

  script_cve_id(
    "CVE-2017-9061",
    "CVE-2017-9062",
    "CVE-2017-9063",
    "CVE-2017-9064",
    "CVE-2017-9065",
    "CVE-2017-9066"
  );
  script_bugtraq_id(98509);

  script_name(english:"WordPress < 4.7.5 Multiple Vulnerabilities");

  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:
"According to its self-reported version number, the WordPress
application running on the remote web server is prior to 4.7.5.
It is, therefore, affected by multiple vulnerabilities :

  - A DOM-based cross-site scripting (XSS) vulnerability
    exists in the uploadSizeError() function within file
    wp-includes/js/plupload/handlers.js when handling overly
    large file uploads due to improper validation of
    user-supplied input to file names before returning it in
    error messages. An unauthenticated, remote attacker can
    exploit this, via a specially crafted request, to
    execute arbitrary script code in a user's browser
    session. (CVE-2017-9061)

  - A flaw exists in the set_custom_fields() function within
    file wp-includes/class-wp-xmlrpc-server.php when
    accessing post meta data due to improper validation of
    user-supplied input. An authenticated, remote attacker
    can exploit this to gain unauthorized access to meta
    data. (CVE-2017-9062)

  - A stored cross-site scripting (XSS) vulnerability exists
    within file wp-admin/customize.php script due to
    improper validation of user-supplied input to the blog
    name before returning it to users. An authenticated,
    remote attacker can exploit this, via a specially
    crafted request, to execute arbitrary script code in a
    user's browser session. (CVE-2017-9063)

  - A cross-site request forgery (XSRF) vulnerability exists
    in the request_filesystem_credentials() function within
    file /wp-admin/includes/file.php due to a failure to
    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 disclose the user credentials. (CVE-2017-9064)

  - A flaw exists in the XML-RPC API, specifically within
    file wp-includes/class-wp-xmlrpc-server.php in the
    _insert_post() function, when handling post meta data
    due to a lack of capability checks. An unauthenticated,
    remote attacker can exploit this to manipulate posts
    without having the required capabilities.
    (CVE-2017-9065)

  - A flaw exists in the WP_Http::request() function within
    file wp-includes/class-http.php due to improper
    validation of user-supplied iput. An unauthenticated,
    remote attacker can exploit this to redirect the user to
    a URL of the attacker's choosing. (CVE-2017-9066)

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://wordpress.org/news/2017/05/wordpress-4-7-5/");
  script_set_attribute(attribute:"see_also", value:"https://codex.wordpress.org/Version_4.7.5");
  script_set_attribute(attribute:"solution", value:
"Upgrade to WordPress version 4.7.5 or later.");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-9064");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/04/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/05/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/19");

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

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

  script_copyright(english:"This script is Copyright (C) 2017-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("wordpress_detect.nasl");
  script_require_keys("www/PHP", "installed_sw/WordPress", "Settings/ParanoidReport");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80, 443);

  exit(0);
}

include("vcf.inc");
include("http.inc");

if (report_paranoia < 2) audit(AUDIT_PARANOID);

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

app_info = vcf::get_app_info(app:app, port:port, webapp:TRUE);
vcf::check_granularity(app_info:app_info, sig_segments:2);

constraints = [
  { "min_version":"2.5", "fixed_version":"3.7.21", "fixed_display" : "3.7.21 / 4.7.5" },
  { "min_version":"3.8", "fixed_version":"3.8.21", "fixed_display" : "3.8.21 / 4.7.5" },
  { "min_version":"3.9", "fixed_version":"3.9.19", "fixed_display" : "3.9.19 / 4.7.5" },
  { "min_version":"4.0", "fixed_version":"4.0.18", "fixed_display" : "4.0.18 / 4.7.5" },
  { "min_version":"4.1", "fixed_version":"4.1.18", "fixed_display" : "4.1.18 / 4.7.5" },
  { "min_version":"4.2", "fixed_version":"4.2.15", "fixed_display" : "4.2.15 / 4.7.5" },
  { "min_version":"4.3", "fixed_version":"4.3.11", "fixed_display" : "4.3.11 / 4.7.5" },
  { "min_version":"4.4", "fixed_version":"4.4.10", "fixed_display" : "4.4.10 / 4.7.5" },
  { "min_version":"4.5", "fixed_version":"4.5.9", "fixed_display" : "4.5.9 / 4.7.5" },
  { "min_version":"4.6", "fixed_version":"4.6.6", "fixed_display" : "4.6.6 / 4.7.5" },
  { "min_version":"4.7", "fixed_version":"4.7.5", "fixed_display" : "4.7.5" }
];

vcf::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_WARNING,
  flags:{xss:TRUE,xsrf:TRUE}
);