Check_MK Information < 1.2.8p26 Disclosure Vulnerability

# SPDX-FileCopyrightText: 2017 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:checkmk:checkmk";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.140449");
  script_version("2025-09-12T15:39:53+0000");
  script_tag(name:"last_modification", value:"2025-09-12 15:39:53 +0000 (Fri, 12 Sep 2025)");
  script_tag(name:"creation_date", value:"2017-10-24 14:59:40 +0700 (Tue, 24 Oct 2017)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-17 13:21:00 +0000 (Thu, 17 Oct 2019)");

  script_cve_id("CVE-2017-14955");

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

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

  script_name("Check_MK Information < 1.2.8p26 Disclosure Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_checkmk_server_http_detect.nasl");
  script_mandatory_keys("checkmk/server/detected");

  script_tag(name:"summary", value:"Check_MK is prone to a race condition vulnerability which could
  lead to information disclosure.");

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

  script_tag(name:"insight", value:"Check_MK mishandles certain errors within the failed-login save
  feature because of a race condition, which allows remote attackers to obtain sensitive user
  information by reading a GUI crash report.");

  script_tag(name:"affected", value:"Check_MK prior to version 1.2.8p26.");

  script_tag(name:"solution", value:"Update to version 1.2.8p26 or later.");

  script_xref(name:"URL", value:"https://www.rcesecurity.com/2017/10/cve-2017-14955-win-a-race-against-check-mk-to-dump-all-your-login-data/");
  script_xref(name:"URL", value:"https://mathias-kettner.de/check_mk_werks.php?werk_id=5208&HTML=yes");

  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: "1.2.8p26")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "1.2.8p26", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);