QNAP QTS Multiple Vulnerabilities (QSA-22-16)

# 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("1.3.6.1.4.1.25623.1.0.170096");
  script_version("2026-03-12T05:56:11+0000");
  script_tag(name:"last_modification", value:"2026-03-12 05:56:11 +0000 (Thu, 12 Mar 2026)");
  script_tag(name:"creation_date", value:"2022-05-06 17:22:50 +0000 (Fri, 06 May 2022)");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-05-13 20:17:00 +0000 (Fri, 13 May 2022)");

  script_cve_id("CVE-2021-44051", "CVE-2021-44052", "CVE-2021-44053", "CVE-2021-44054");

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

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

  script_name("QNAP QTS Multiple Vulnerabilities (QSA-22-16)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("General");
  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 multiple vulnerabilities.");

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

  script_tag(name:"insight", value:"Multiple vulnerabilities have been reported to affect QTS,
  QuTS hero, and QuTScloud:

  - CVE-2021-44051: Command injection vulnerability

  - CVE-2021-44052: Improper link resolution before file access ('link following') vulnerability

  - CVE-2021-44053: Cross-site scripting (XSS) vulnerability

  - CVE-2021-44054: Open redirect vulnerability");

  script_tag(name:"impact", value:"- CVE-2021-44051: If exploited, this vulnerability allows remote
  attackers to run arbitrary commands.

  - CVE-2021-44052: If exploited, this vulnerability allows remote attackers to traverse the file
  system to unintended locations and read or overwrite files.

  - CVE-2021-44053: If exploited, this vulnerability allows remote attackers to inject malicious
  code.

  - CVE-2021-44054: If exploited, this vulnerability allows attackers to redirect users to an
  untrusted page that contains malware.");

  script_tag(name:"affected", value:"QNAP QTS versions 4.2.6, 4.3.3, 4.3.4, 4.3.6, 4.5.4 and
  5.0.0.");

  script_tag(name:"solution", value:"Update to version QTS 4.2.6 build 20220304, QTS 4.3.3.1945
  build 20220303, 4.3.4.1976 build 20220303, 4.3.6.1965 build 20220302, 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-22-16");
  script_xref(name:"URL", value:"https://www.qnap.com/en/release-notes/qts/5.0.0.1986/20220324");
  script_xref(name:"URL", value:"https://www.qnap.com/en/release-notes/qts/4.3.6.1965/20220302");
  script_xref(name:"URL", value:"https://www.qnap.com/en/release-notes/qts/4.3.4.1976/20220303");
  script_xref(name:"URL", value:"https://www.qnap.com/en/release-notes/qts/4.3.3.1945/20220303");
  script_xref(name:"URL", value:"https://www.qnap.com/en/release-notes/qts/4.2.6/20220304");
  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:"4.2.6" ) ) {
  report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"4.2.6", fixed_build:"20220304" );
  security_message( port:0, data:report );
  exit( 0 );
}

if ( version_is_equal( version:version, test_version:"4.2.6" ) &&
   ( ! build || version_is_less( version:build, test_version:"20220304" ) ) ) {
  report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"4.2.6", fixed_build:"20220304" );
  security_message( port:0, data:report );
  exit( 0 );
}

if ( version =~ "^4\.3\.[0123]" ) {
  if ( version_is_less( version:version, test_version:"4.3.3.1945" ) ) {
    report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"4.3.3.1945", fixed_build:"20180504" );
    security_message( port:0, data:report );
    exit( 0 );
  }

  if ( version_is_equal( version:version, test_version:"4.3.3.1945" ) &&
     ( ! build || version_is_less( version:build, test_version:"20180504" ) ) ) {
    report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"4.3.3.1945", fixed_build:"20180504" );
    security_message( port:0, data:report );
    exit( 0 );
  }
}

if ( version =~ "^4\.3\.4" ) {
  if ( version_is_less( version:version, test_version:"4.3.4.1976" ) ) {
    report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"4.3.4.1976", fixed_build:"20220303" );
    security_message( port:0, data:report );
    exit( 0 );
  }

  if ( version_is_equal( version:version, test_version:"4.3.4.1976" ) &&
     ( ! build || version_is_less( version:build, test_version:"20220303" ) ) ) {
    report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"4.3.4.1976", fixed_build:"20220303" );
    security_message( port:0, data:report );
    exit( 0 );
  }
}

if ( version =~ "^4\.3\.[56]" ) {
  if ( version_is_less( version:version, test_version:"4.3.6.1965" ) ) {
    report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"4.3.6.1965", fixed_build:"20220302" );
    security_message( port:0, data:report );
    exit( 0 );
  }

  if ( version_is_equal( version:version, test_version:"4.3.6.1965" ) &&
     ( ! build || version_is_less( version:build, test_version:"20220302" ) ) ) {
    report = report_fixed_ver( installed_version:version, installed_build:build, fixed_version:"4.3.6.1965", fixed_build:"20220302" );
    security_message( port:0, data:report );
    exit( 0 );
  }
}

if ( version =~ "^4\.[45]" ) {
  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 );