Samba 3.2.0 <= 3.2.2 Elevate Privileges Vulnerability (CVE-2008-3789)

# Copyright (C) 2021 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("1.3.6.1.4.1.25623.1.0.150727");
  script_version("2021-09-29T04:35:02+0000");
  script_tag(name:"last_modification", value:"2021-09-29 04:35:02 +0000 (Wed, 29 Sep 2021)");
  script_tag(name:"creation_date", value:"2021-09-24 10:59:30 +0000 (Fri, 24 Sep 2021)");
  script_tag(name:"cvss_base", value:"2.1");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:N/I:P/A:N");

  script_cve_id("CVE-2008-3789");

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

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

  script_name("Samba 3.2.0 <= 3.2.2 Elevate Privileges Vulnerability (CVE-2008-3789)");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 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:"Wrong permissions of group_mapping.ldb.");

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

  script_tag(name:"insight", value:"The file group_mapping.ldb is created with the permissions 0666. That means
  everyone is able to edit this file and gain additional access rights while
  connecting remotely to the Samba server. By manipulating the SID mappings
  contained in this file, it is also possible to establish a connection that runs
  in the privileged root context.");

  script_tag(name:"affected", value:"Samba versions 3.2.0 through 3.2.2.");

  script_tag(name:"solution", value:"Update to version 3.2.3 or later.");

  script_xref(name:"URL", value:"https://www.samba.org/samba/security/CVE-2008-3789.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(version: version, test_version: "3.2.0", test_version2: "3.2.2")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.2.3", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);