MyBB < 1.8.26 Multiple Vulnerabilities

# SPDX-FileCopyrightText: 2021 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:mybb:mybb";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.113801");
  script_version("2025-04-30T05:39:51+0000");
  script_tag(name:"last_modification", value:"2025-04-30 05:39:51 +0000 (Wed, 30 Apr 2025)");
  script_tag(name:"creation_date", value:"2021-03-16 10:32:28 +0000 (Tue, 16 Mar 2021)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/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:"2021-03-23 22:14:00 +0000 (Tue, 23 Mar 2021)");

  script_cve_id("CVE-2021-27889", "CVE-2021-27890", "CVE-2021-27946", "CVE-2021-27947",
                "CVE-2021-27948", "CVE-2021-27949");

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

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

  script_name("MyBB < 1.8.26 Multiple Vulnerabilities");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("sw_mybb_http_detect.nasl");
  script_mandatory_keys("mybb/detected");

  script_tag(name:"summary", value:"MyBB 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:"The following vulnerabilities exist:

  - CVE-2021-27889: Cross-site scripting (XSS) via Nested Auto URL when parsing messages

  - CVE-2021-27890: SQL injection (SQLi) via theme properties included in theme XML files

  - CVE-2021-27946: SQL injection (SQLi) via the poll vote count

  - CVE-2021-27947: SQL injection (SQLi) via the Copy Forum feature in Forum Management

  - CVE-2021-27948: SQL injection (SQLi) via User Groups

  - CVE-2021-27949: Cross-site scripting (XSS) via Custom moderator tools");

  script_tag(name:"impact", value:"Successful exploitation would allow an attacker to read
  sensitive information, inject arbitrary HTML or JavaScript into the site or even execute arbitrary
  code on the target machine.");

  script_tag(name:"affected", value:"MyBB through version 1.8.25.");

  script_tag(name:"solution", value:"Update to version 1.8.26 or later.");

  script_xref(name:"URL", value:"https://github.com/mybb/mybb/security/advisories/GHSA-xhj7-3349-mqcm");
  script_xref(name:"URL", value:"https://github.com/mybb/mybb/security/advisories/GHSA-r34m-ccm8-mfhq");
  script_xref(name:"URL", value:"https://github.com/mybb/mybb/security/advisories/GHSA-23m9-w75q-ph4p");
  script_xref(name:"URL", value:"https://github.com/mybb/mybb/security/advisories/GHSA-jjx8-8mcp-7h65");
  script_xref(name:"URL", value:"https://github.com/mybb/mybb/security/advisories/GHSA-3p9w-2q65-r6g2");
  script_xref(name:"URL", value:"https://github.com/mybb/mybb/security/advisories/GHSA-cmmr-39v8-8rx2");

  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: "1.8.26")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "1.8.26", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);