Samba Unspecified Vulnerability (CVE-2021-3670)

# Copyright (C) 2022 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

CPE = "cpe:/a:samba:samba";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.113941");
  script_version("2023-10-19T05:05:21+0000");
  script_tag(name:"last_modification", value:"2023-10-19 05:05:21 +0000 (Thu, 19 Oct 2023)");
  script_tag(name:"creation_date", value:"2022-04-25 07:22:35 +0000 (Mon, 25 Apr 2022)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-08-29 18:12:00 +0000 (Mon, 29 Aug 2022)");

  script_cve_id("CVE-2021-3670");

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

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

  script_name("Samba Unspecified Vulnerability (CVE-2021-3670)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 Greenbone Networks GmbH");
  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 unspecified vulnerability.");

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

  script_tag(name:"insight", value:"LDAP search filters can be very complex, search filters are not
  limited to indexed attributes and they can also include complex extended match rules like
  LDAP_MATCHING_RULE_IN_CHAIN.

  The LDAP Policy setting 'lDAPAdminLimits: MaxQueryDuration=120' (by default) should have provided
  a generous upper bound, however the policy was previously not considered in setting the timeout.

  Additionally, no interuption points were set in the filter handling to check if the operation was
  over-time.");

  script_tag(name:"affected", value:"Samba version 4.1.0 through 4.14.12 and 4.15.x through
  4.15.5.");

  script_tag(name:"solution", value:"Update to version 4.14.13, 4.15.6 or later.");

  script_xref(name:"URL", value:"https://bugzilla.samba.org/show_bug.cgi?id=14694");
  script_xref(name:"URL", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2077533");

  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: "4.1.0", test_version_up: "4.14.13")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.14.13", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range_exclusive(version: version, test_version_lo: "4.15.0", test_version_up: "4.15.6")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.15.6", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);