Atlassian Crowd LDAP Java Object Injection Vulnerability (CWD-4790)

# Copyright (C) 2016 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:atlassian:crowd";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106375");
  script_version("2022-04-12T10:31:39+0000");
  script_tag(name:"last_modification", value:"2022-04-12 10:31:39 +0000 (Tue, 12 Apr 2022)");
  script_tag(name:"creation_date", value:"2016-11-04 14:37:33 +0700 (Fri, 04 Nov 2016)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-10-09 20:00:00 +0000 (Tue, 09 Oct 2018)");

  script_cve_id("CVE-2016-6496");

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

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

  script_name("Atlassian Crowd LDAP Java Object Injection Vulnerability (CWD-4790)");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_atlassian_crowd_http_detect.nasl");
  script_mandatory_keys("atlassian/crowd/detected");

  script_tag(name:"summary", value:"Atlassian Crowd is prone to a LDAP Java object injection
  vulnerability.");

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

  script_tag(name:"insight", value:"The Crowd LDAP directory connector allowed an attacker to gain
  remote code execution in Crowd by injecting malicious attributes in LDAP entries. To exploit this
  issue, attackers need to modify an entry in your LDAP directory or successfully execute a
  Man-in-The-Middle attack between an LDAP server and Crowd. Crowd installations configured to
  communicate with an LDAP server using the LDAPS protocol with the Secure SSL option enabled are
  immune to this attack vector only (unless an attacker is able to obtain the private key of the
  SSL/TLS certificate used to secure the communication).");

  script_tag(name:"affected", value:"Atlassian Crowd version 1.4.1 through 2.8.7 and 2.9.x through
  2.9.4.");

  script_tag(name:"solution", value:"Update to version 2.8.8, 2.9.5 or later.");

  script_xref(name:"URL", value:"https://jira.atlassian.com/browse/CWD-4790");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if (!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: "1.4.1", test_version2: "2.8.7")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "2.8.8", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "2.9.0", test_version2: "2.9.4")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "2.9.5", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);