Moodle 3.x Bypass Vulnerability (Jan 2018) - Linux

# SPDX-FileCopyrightText: 2018 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:moodle:moodle";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.112277");
  script_version("2025-09-12T05:38:45+0000");
  script_tag(name:"last_modification", value:"2025-09-12 05:38:45 +0000 (Fri, 12 Sep 2025)");
  script_tag(name:"creation_date", value:"2018-05-09 13:28:51 +0200 (Wed, 09 May 2018)");
  script_tag(name:"cvss_base", value:"4.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");

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

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

  script_cve_id("CVE-2018-1043");

  script_name("Moodle 3.x Bypass Vulnerability (Jan 2018) - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_moodle_cms_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("moodle/detected", "Host/runs_unixoide");

  script_tag(name:"summary", value:"Setting for blocked hosts list can be bypassed with multiple A record hostnames.");
  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
  script_tag(name:"insight", value:"Moodle setting 'cURL blocked hosts list' was introduced in Moodle 3.2 to prevent access
  to specific addresses (usually internal) when server retrieves URLs requested by the user.");
  script_tag(name:"affected", value:"Moodle versions 3.4, 3.3 to 3.3.3 and 3.2 to 3.2.6");
  script_tag(name:"solution", value:"Update to version 3.4.1, 3.3.4 or 3.2.7 respectively.");

  script_xref(name:"URL", value:"https://moodle.org/mod/forum/discuss.php?d=364382");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/102769");

  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( port: port, cpe: CPE, exit_no_version: TRUE ) )
  exit( 0 );

version = infos["version"];
path = infos["location"];

if( version_in_range( version: version, test_version: "3.2.0", test_version2: "3.2.6" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "3.2.7", install_path: path );
  security_message( port: port, data: report );
  exit( 0 );
}

if( version_in_range( version: version, test_version: "3.3.0", test_version2: "3.3.3" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "3.3.4", install_path: path );
  security_message( port: port, data: report );
  exit( 0 );
}

if( version_is_equal( version: version, test_version: "3.4.0" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "3.4.1", install_path: path );
  security_message( port: port, data: report );
  exit( 0 );
}

exit( 99 );