Concrete CMS < 8.5.6 Multiple Vulnerabilities

# SPDX-FileCopyrightText: 2021 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:concretecms:concrete_cms";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.146833");
  script_version("2025-10-22T05:39:59+0000");
  script_tag(name:"last_modification", value:"2025-10-22 05:39:59 +0000 (Wed, 22 Oct 2025)");
  script_tag(name:"creation_date", value:"2021-10-05 08:51:19 +0000 (Tue, 05 Oct 2021)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-10-01 20:36:00 +0000 (Fri, 01 Oct 2021)");

  script_cve_id("CVE-2021-22949", "CVE-2021-22950", "CVE-2021-22953", "CVE-2021-40097",
                "CVE-2021-40098", "CVE-2021-40099", "CVE-2021-40100", "CVE-2021-40102",
                "CVE-2021-40103", "CVE-2021-40104", "CVE-2021-40105", "CVE-2021-40106",
                "CVE-2021-40107", "CVE-2021-40108", "CVE-2021-40109");

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

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

  script_name("Concrete CMS < 8.5.6 Multiple Vulnerabilities");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_portlandlabs_concrete_cms_http_detect.nasl");
  script_mandatory_keys("concrete_cms/detected");

  script_tag(name:"summary", value:"Concrete CMS is prone to multiple vulnerabilities.");

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

  script_tag(name:"insight", value:"The following vulnerabilities exist:

  - CVE-2021-22949: CSRF allows an attacker to duplicate files which can lead to UI inconvenience,
  and exhaustion of disk space

  - CVE-2021-22950: CSRF allowing attachments to comments in the conversation section to be deleted

  - CVE-2021-22953: CSRF allows an attacker to clone topics which can lead to UI inconvenience, and
  exhaustion of disk space

  - CVE-2021-40097: Authenticated path traversal leads to remote code execution via uploaded PHP
  code, related to the bFilename parameter

  - CVE-2021-40098: Path traversal leading to RCE via external form by adding a regular expression

  - CVE-2021-40099: Fetching the update json scheme over HTTP leads to remote code execution

  - CVE-2021-40100: Stored XSS can occur in Conversations when the Active Conversation Editor is
  set to Rich Text

  - CVE-2021-40102: Arbitrary File deletion can occur via PHAR deserialization in is_dir

  - CVE-2021-40103: Path Traversal can lead to arbitrary file reading and SSRF

  - CVE-2021-40104: SVG sanitizer bypass

  - CVE-2021-40105: XSS via Markdown Comments

  - CVE-2021-40106: Unauthenticated stored XSS in blog comments via the website field

  - CVE-2021-40107: Stored XSS in comment section/FileManger

  - CVE-2021-40108: CSRF in the calendar

  - CVE-2021-40109: SSRF");

  script_tag(name:"affected", value:"Concrete CMS versions prior to 8.5.6.");

  script_tag(name:"solution", value:"Update to version 8.5.6 or later.");

  script_xref(name:"URL", value:"https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes");

  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"];
location = infos["location"];

if (version_is_less(version: version, test_version: "8.5.6")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "8.5.6", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);