OpenLDAP 2.4.x Weak Cipher 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
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#
# This program is distributed in the hope that it will be useful,
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
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CPE = "cpe:/a:openldap:openldap";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.147065");
  script_version("2023-05-04T09:51:03+0000");
  script_tag(name:"last_modification", value:"2023-05-04 09:51:03 +0000 (Thu, 04 May 2023)");
  script_tag(name:"creation_date", value:"2021-11-02 04:40:22 +0000 (Tue, 02 Nov 2021)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/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:"2023-04-28 18:28:00 +0000 (Fri, 28 Apr 2023)");

  script_cve_id("CVE-2015-3276");

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

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

  script_name("OpenLDAP 2.4.x Weak Cipher Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("General");
  script_dependencies("gb_openldap_consolidation.nasl");
  script_mandatory_keys("openldap/detected");

  script_tag(name:"summary", value:"OpenLDAP is prone to a weak cipher vulnerability.");

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

  script_tag(name:"insight", value:"The nss_parse_ciphers function in libraries/libldap/tls_m.c
  does not properly parse OpenSSL-style multi-keyword mode cipher strings, which might cause a
  weaker than intended cipher to be used and allow remote attackers to have unspecified impact via
  unknown vectors.");

  script_tag(name:"affected", value:"OpenLDAP version 2.4.x.");

  script_tag(name:"solution", value:"Update to version 2.5 or later.");

  script_xref(name:"URL", value:"https://bugs.openldap.org/show_bug.cgi?id=8543");

  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 =~ "^2\.4\.") {
  report = report_fixed_ver(installed_version: version, fixed_version: "2.5", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);