WordPress < 5.1 Path Traversal Vulnerability - Linux

# SPDX-FileCopyrightText: 2019 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("1.3.6.1.4.1.25623.1.0.142032");
  script_version("2025-09-12T05:38:45+0000");
  script_tag(name:"last_modification", value:"2025-09-12 05:38:45 +0000 (Fri, 12 Sep 2025)");
  script_tag(name:"creation_date", value:"2019-02-22 14:19:50 +0700 (Fri, 22 Feb 2019)");
  script_tag(name:"cvss_base", value:"4.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-02-23 16:21:00 +0000 (Tue, 23 Feb 2021)");

  script_cve_id("CVE-2019-8943");

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

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

  script_name("WordPress < 5.1 Path Traversal Vulnerability - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_wordpress_http_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("wordpress/detected", "Host/runs_unixoide");

  script_tag(name:"summary", value:"WordPress allows Path Traversal in wp_crop_image(). An attacker (who has
privileges to crop an image) can write the output image to an arbitrary directory via a filename containing two
image extensions and ../ sequences, such as a filename ending with the .jpg?/../../file.jpg substring.");

  script_tag(name:"affected", value:"WordPress version 5.0.3 and prior.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"solution", value:"Update to WordPress version 5.1 or later.");

  script_xref(name:"URL", value:"https://blog.ripstech.com/2019/wordpress-image-remote-code-execution/");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/107089");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if (!port = get_app_port(cpe: CPE))
  exit(0);

if (!infos = get_app_version_and_location(cpe: CPE, port: port, exit_no_version: TRUE))
  exit(0);

version = infos["version"];
path = infos["location"];

if (version_is_less(version: version, test_version: "5.1")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "5.1", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);