ManageEngine ServiceDesk Plus Authentication Bypass Vulnerability

# SPDX-FileCopyrightText: 2017 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

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106819");
  script_version("2026-04-22T06:16:44+0000");
  script_tag(name:"last_modification", value:"2026-04-22 06:16:44 +0000 (Wed, 22 Apr 2026)");
  script_tag(name:"creation_date", value:"2017-05-22 16:23:48 +0700 (Mon, 22 May 2017)");
  script_tag(name:"cvss_base", value:"5.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:N");

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

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

  script_name("ManageEngine ServiceDesk Plus Authentication Bypass Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_manageengine_servicedesk_plus_consolidation.nasl");
  script_mandatory_keys("manageengine/servicedesk_plus/detected");

  script_tag(name:"summary", value:"ManageEngine ServiceDesk Plus is prone to an authentication bypass
  vulnerability.");

  script_tag(name:"insight", value:"A valid username can be used as both username/password to login and
  compromise the application through the /mc directory which is the mobile client directory. This can be achieved
  ONLY if Active Directory/LDAP is being used.

  This flaw exists because of the lack of password randomization in the application version 9.0.");

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

  script_tag(name:"affected", value:"ManageEngine ServiceDesk Plus prior version 9.2 build 9241");

  script_tag(name:"solution", value:"Update to version 9.2 build 9241 or later.");

  script_xref(name:"URL", value:"https://www.manageengine.com/products/service-desk/readme-9.2.html");
  script_xref(name:"URL", value:"https://packetstormsecurity.com/files/142598/ManageEngine-ServiceDesk-Plus-9.0-Authentication-Bypass.html");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

CPE = "cpe:/a:zohocorp:manageengine_servicedesk_plus";

if( isnull( 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"];
path = infos["location"];

if( version_is_less( version:version, test_version:"9.2b9241" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"9.2 (Build 9241)", install_path:path );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );