CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
20.6%
MyBB is prone to multiple cross-site scripting (XSS)
vulnerabilities.
# 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:/a:mybb:mybb";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.127617");
script_version("2023-11-16T05:05:14+0000");
script_tag(name:"last_modification", value:"2023-11-16 05:05:14 +0000 (Thu, 16 Nov 2023)");
script_tag(name:"creation_date", value:"2023-11-10 10:45:46 +0000 (Fri, 10 Nov 2023)");
script_tag(name:"cvss_base", value:"6.4");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:N");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2023-11-14 17:07:00 +0000 (Tue, 14 Nov 2023)");
script_cve_id("CVE-2023-45556", "CVE-2023-46251");
script_tag(name:"qod_type", value:"remote_banner");
script_tag(name:"solution_type", value:"VendorFix");
script_name("MyBB < 1.8.37 Multiple XSS Vulnerabilities");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2023 Greenbone AG");
script_family("Web application abuses");
script_dependencies("sw_mybb_detect.nasl");
script_mandatory_keys("MyBB/installed");
script_tag(name:"summary", value:"MyBB is prone to multiple cross-site scripting (XSS)
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-2023-45556: Themes Admin CP module allows remote authenticated users to inject HTML,
triggered in Admin CP.
- CVE-2023-46251: Custom MyCode (BBCode) for the visual editor (SCEditor) doesn't escape input
properly when rendering HTML, resulting in a DOM-based XSS vulnerability.");
script_tag(name:"affected", value:"MyBB prior to version 1.8.37.");
script_tag(name:"solution", value:"Update to version 1.8.37 or later.");
script_xref(name:"URL", value:"https://github.com/mybb/mybb/security/advisories/GHSA-4xqm-3cm2-5xgf");
script_xref(name:"URL", value:"https://github.com/mybb/mybb/security/advisories/GHSA-wj33-q7vj-9fr8");
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: "1.8.37" ) ) {
report = report_fixed_ver( installed_version: version, fixed_version: "1.8.37", install_path: location );
security_message( port: port, data: report );
exit( 0 );
}
exit( 99 );
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
20.6%