9.2 High
AI Score
Confidence
High
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.94 High
EPSS
Percentile
99.1%
OpenLDAP is prone to a denial of service (DoS) vulnerability.
# 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:openldap:openldap";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.147066");
script_version("2021-11-02T05:28:10+0000");
script_tag(name:"last_modification", value:"2021-11-02 05:28:10 +0000 (Tue, 02 Nov 2021)");
script_tag(name:"creation_date", value:"2021-11-02 04:46:17 +0000 (Tue, 02 Nov 2021)");
script_tag(name:"cvss_base", value:"4.3");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:N/A:P");
script_cve_id("CVE-2013-4449");
script_tag(name:"qod_type", value:"executable_version_unreliable");
script_tag(name:"solution_type", value:"VendorFix");
script_name("OpenLDAP < 2.4.40 DoS Vulnerability");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
script_family("Denial of Service");
script_dependencies("gb_openldap_consolidation.nasl");
script_mandatory_keys("openldap/detected");
script_tag(name:"summary", value:"OpenLDAP is prone to a denial of service (DoS) vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The rwm overlay does not properly count references, which
allows remote attackers to cause a denial of service (slapd crash) by unbinding immediately after
a search request, which triggers rwm_conn_destroy to free the session context while it is being
used by rwm_op_search.");
script_tag(name:"affected", value:"OpenLDAP prior to version 2.4.40.");
script_tag(name:"solution", value:"Update to version 2.4.40 or later.");
script_xref(name:"URL", value:"https://bugs.openldap.org/show_bug.cgi?id=7723");
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_is_less(version: version, test_version: "2.4.40")) {
report = report_fixed_ver(installed_version: version, fixed_version: "2.4.40", install_path: location);
security_message(port: port, data: report);
exit(0);
}
exit(99);