Zabbix 6.0.x < 6.0.41 / 7.0.x < 7.0.18 / 7.4.x < 7.4.2 Unauthorized Object Creation (ZBX-27567)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(301859);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/30");

  script_cve_id("CVE-2026-23925");
  script_xref(name:"IAVA", value:"2026-A-0213-S");

  script_name(english:"Zabbix 6.0.x < 6.0.41 / 7.0.x < 7.0.18 / 7.4.x < 7.4.2 Unauthorized Object Creation (ZBX-27567)");

  script_set_attribute(attribute:"synopsis", value:
"A web application running on the remote host is affected by an authorization bypass vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Zabbix installed on the remote host is affected by an authorization bypass vulnerability. An
authenticated low-privilege user (User role) possessing template and host write permissions can exploit the
configuration.import API to create unauthorized objects, despite the User role typically lacking authority to create
or modify templates and hosts.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported
version number.");
  script_set_attribute(attribute:"see_also", value:"https://support.zabbix.com/browse/ZBX-27567");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Zabbix version 6.0.41, 7.0.18, 7.4.2 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:H/SI:N/SA:L");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-23925");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/03/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/11");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:zabbix:zabbix");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_set_attribute(attribute:"enable_cgi_scanning", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("zabbix_frontend_detect.nasl");
  script_require_keys("installed_sw/zabbix");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);

  exit(0);
}

include('vcf.inc');
include('http.inc');

var app = 'zabbix';
get_install_count(app_name:app, exit_if_zero:TRUE);

var port = get_http_port(default:80);

var app_info = vcf::get_app_info(app:app, port:port, webapp:TRUE);
vcf::check_granularity(app_info:app_info, sig_segments:3);

var constraints = [
  {'min_version':'6.0.0', 'fixed_version':'6.0.41'},
  {'min_version':'7.0.0', 'fixed_version':'7.0.18'},
  {'min_version':'7.4.0', 'fixed_version':'7.4.2'}
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);