Samba Information Disclosure Vulnerability (CVE-2023-3347)

# 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("1.3.6.1.4.1.25623.1.0.104871");
  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:"2023-07-20 13:30:44 +0000 (Thu, 20 Jul 2023)");
  script_tag(name:"cvss_base", value:"5.4");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:N/I:C/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-07-31 19:15:00 +0000 (Mon, 31 Jul 2023)");

  script_cve_id("CVE-2023-3347");

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

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

  script_name("Samba Information Disclosure Vulnerability (CVE-2023-3347)");

  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 information disclosure vulnerability.");

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

  script_tag(name:"insight", value:"SMB2 packet signing is not enforced if an admin configured
  'server signing = required' or for SMB2 connections to Domain Controllers where SMB2 packet
  signing is mandatory.");

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

  script_tag(name:"solution", value:"Update to version 4.17.10, 4.18.5 or later.");

  script_xref(name:"URL", value:"https://www.samba.org/samba/security/CVE-2023-3347.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"];

# nb: While the advisory includes a mention of 4.16.11 as a fix it clearly says the following at the
# top:
# > All versions starting with 4.17.0.
# and thus 4.16.x hasn't been included here.
if (version_in_range_exclusive(version: version, test_version_lo: "4.17.0", test_version_up: "4.17.10")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.17.10 / 4.18.5", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range_exclusive(version: version, test_version_lo: "4.18.0", test_version_up: "4.18.5")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.18.5", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);