D-Link DIR-825 Rev R1 <= 3.0.1 RCE Vulnerability

# SPDX-FileCopyrightText: 2023 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:dlink:dir-825_firmware";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.170306");
  script_version("2023-11-21T05:05:52+0000");
  script_tag(name:"last_modification", value:"2023-11-21 05:05:52 +0000 (Tue, 21 Nov 2023)");
  script_tag(name:"creation_date", value:"2023-02-06 15:32:27 +0000 (Mon, 06 Feb 2023)");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:"2021-02-12 18:50:00 +0000 (Fri, 12 Feb 2021)");

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

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

  script_xref(name:"CISA", value:"Known Exploited Vulnerability (KEV) catalog");
  script_xref(name:"URL", value:"https://www.cisa.gov/known-exploited-vulnerabilities-catalog");
  script_cve_id("CVE-2020-29557");

  script_name("D-Link DIR-825 Rev R1 <= 3.0.1 RCE Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2023 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_dlink_dir_consolidation.nasl");
  script_mandatory_keys("d-link/dir/detected", "d-link/dir/hw_version");

  script_tag(name:"summary", value:"D-Link DIR-825 Rev. R1 devices are prone to a remote code
  execution (RCE) vulnerability.");

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

  script_tag(name:"insight", value:"A buffer overflow in the web interface allows attackers to
  achieve pre-authentication remote code execution.");

  script_tag(name:"affected", value:"D-Link DIR-825 Rev R1 devices through firmware version 3.0.1.");

  script_tag(name:"solution", value:"Update to firmware version 3.0.2 or later.");

  script_xref(name:"URL", value:"https://www.dlink.ru/ru/download2/5/19/2354/441/");

  exit(0);
}

include("host_details.inc");
include("revisions-lib.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"];

hw_version = get_kb_item( "d-link/dir/hw_version" );
if ( ! hw_version )
  exit( 0 );

if ( hw_version == "R1" && ( revcomp( a:version, b:"3.0.1" ) <= 0 ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"3.0.2", install_path:location, extra:"Hardware revision: " + hw_version );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );