QNAP QTS Path Traversal Vulnerability (QSA-22-13)

# SPDX-FileCopyrightText: 2022 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:/o:qnap:qts";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.170099");
  script_version("2024-01-19T16:09:33+0000");
  script_tag(name:"last_modification", value:"2024-01-19 16:09:33 +0000 (Fri, 19 Jan 2024)");
  script_tag(name:"creation_date", value:"2022-05-09 09:08:13 +0000 (Mon, 09 May 2022)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-05-13 20:16:00 +0000 (Fri, 13 May 2022)");

  script_cve_id("CVE-2021-38693");

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

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

  script_name("QNAP QTS Path Traversal Vulnerability (QSA-22-13)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_qnap_nas_http_detect.nasl");
  script_mandatory_keys("qnap/nas/qts/detected");

  script_tag(name:"summary", value:"QNAP QTS is prone to a path traversal vulnerability.");

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

  script_tag(name:"insight", value:"A path traversal vulnerability in thttpd has been reported to
  affect QNAP devices running QTS.");

  script_tag(name:"impact", value:"If exploited, this vulnerability allows attackers to access and
  read sensitive data.");

  script_tag(name:"solution", value:"Update to version 4.5.4.1991 build 20220329, 5.0.0.1986 build
  20220324 or later.");

  script_xref(name:"URL", value:"https://www.qnap.com/en/security-advisory/qsa-22-13");

  exit(0);
}

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

if ( ! version = get_app_version( cpe:CPE, nofork:TRUE ) )
  exit( 0 );

build = get_kb_item( "qnap/nas/qts/build" );

if ( version_is_less( version:version, test_version:"4.5.4.1991" ) ) {
  report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"4.5.4.1991", fixed_build:"20220329" );
  security_message( port:0, data:report );
  exit( 0 );
}

if ( version_is_equal( version:version, test_version:"4.5.4.1991" ) &&
   ( ! build || version_is_less( version:build, test_version:"20220329" ) ) ) {
  report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"4.5.4.1991", fixed_build:"20220329" );
  security_message( port:0, data:report );
  exit( 0 );
}

if ( version =~ "^5\." ) {
  if ( version_is_less( version:version, test_version:"5.0.0.1986" ) ) {
    report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"5.0.0.1986", fixed_build:"20220324" );
    security_message( port:0, data:report );
    exit( 0 );
  }

  if ( version_is_equal( version:version, test_version:"5.0.0.1986" ) &&
     ( ! build || version_is_less( version:build, test_version:"20220324" ) ) ) {
    report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"5.0.0.1986", fixed_build:"20220324" );
    security_message( port:0, data:report );
    exit( 0 );
  }
}

exit( 99 );