Samba Incomplete Access Check Vulnerability (CVE-2023-0225)

# 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:samba:samba";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.104662");
  script_version("2023-10-13T05:06:10+0000");
  script_tag(name:"last_modification", value:"2023-10-13 05:06:10 +0000 (Fri, 13 Oct 2023)");
  script_tag(name:"creation_date", value:"2023-03-31 09:52:43 +0000 (Fri, 31 Mar 2023)");
  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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-04-09 02:50:00 +0000 (Sun, 09 Apr 2023)");

  script_cve_id("CVE-2023-0225");

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

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

  script_name("Samba Incomplete Access Check Vulnerability (CVE-2023-0225)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2023 Greenbone AG");
  script_family("General");
  script_dependencies("smb_nativelanman.nasl", "gb_samba_detect.nasl");
  script_mandatory_keys("samba/smb_or_ssh/detected");

  script_tag(name:"summary", value:"Samba is prone to an incomplete access check vulnerability.");

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

  script_tag(name:"insight", value:"An incomplete access check on dnsHostName allows authenticated
  but otherwise unprivileged users to delete this attribute from any object in the directory.");

  script_tag(name:"affected", value:"Samba 4.17.0 and later versions.");

  script_tag(name:"solution", value:"Update to version 4.17.7, 4.18.1 or later.");

  script_xref(name:"URL", value:"https://www.samba.org/samba/security/CVE-2023-0225.html");

  exit(0);
}

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

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"];
location = infos["location"];

if (version_in_range_exclusive(version: version, test_version_lo: "4.17.0", test_version_up: "4.17.7")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.17.7 / 4.18.1", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_is_equal(version: version, test_version: "4.18.0")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.18.1", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);