Microsoft Windows: Account lockout threshold

##############################################################################
# OpenVAS Vulnerability Test
# $Id: win_account_lockout_threshold.nasl 11532 2018-09-21 19:07:30Z cfischer $
#
# Check value for Account lockout threshold (WMI)
#
# Authors:
# Emanuel Moss <[email protected]>
#
# Copyright:
# Copyright (c) 2018 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# 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.
###############################################################################

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.109110");
  script_version("$Revision: 11532 $");
  script_tag(name:"last_modification", value:"$Date: 2018-09-21 21:07:30 +0200 (Fri, 21 Sep 2018) $");
  script_tag(name:"creation_date", value:"2018-04-25 13:08:49 +0200 (Wed, 25 Apr 2018)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:H/Au:S/C:N/I:N/A:N");
  script_tag(name:"qod", value:"97");
  script_name('Microsoft Windows: Account lockout threshold');
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2018 Greenbone Networks GmbH");
  script_family("Policy");
  script_dependencies("gb_wmi_access.nasl", "smb_reg_service_pack.nasl");
  script_add_preference(name:"Maximum", type:"entry", value:"10");
  script_mandatory_keys("Compliance/Launch");
  script_require_keys("WMI/access_successful");
  script_tag(name:"summary", value:"This test checks the setting for policy
'Account lockout threshold' on Windows hosts (at least Windows 7).

The policy setting determines the number of failed sign-in attempts that will
cause a user account to be locked. A locked account cannot be used until you
reset it or until the number of minutes specified by the Account lockout duration
policy setting expires. You can set a value from 1 through 999 failed sign-in
attempts, or you can specify that the account will never be locked by setting
the value to 0.");
  exit(0);
}

include("smb_nt.inc");
include("policy_functions.inc");

if(!get_kb_item("SMB/WindowsVersion")){
  policy_logging(text:'Host is no Microsoft Windows System or it is not possible
to query the registry.');
  exit(0);
}

if(get_kb_item("SMB/WindowsVersion") < "6.1"){
  policy_logging(text:'Host is not at least a Microsoft Windows 7 system.
Older versions of Windows are not supported any more. Please update the
Operating System.');
  exit(0);
}

type = 'Account lockout threshold';
select = 'Setting';
keyname = 'LockoutBadCount';

value = rsop_securitysettingsnumeric(select:select,keyname:keyname);
if( value == ''){
  policy_logging(text:'Unable to detect setting for: "' + type + '".');
  policy_set_kb(val:'error');
}else{
  policy_logging(text:'"' + type + '" is set to: ' + value);
  policy_set_kb(val:value);
}

title = 'Account lockout threshold';
select = 'Setting';
keyname = 'LockoutBadCount';
fixtext = 'Set following UI path accordingly:
Computer Configuration/Windows Settings/Security Settings/Account Policies/Password Policy/' + title;
default = script_get_preference('Maximum');

value = rsop_securitysettingsnumeric(select:select,keyname:keyname);
if( value == ''){
  value = '0';
}

if(int(value) <= int(default) && int(value) != 0){
  compliant = "yes";
}else{
  compliant = "no";
}

policy_logging(text:'"' + title + '" is set to: ' + value);
policy_add_oid();
policy_set_dval(dval:default);
policy_fixtext(fixtext:fixtext);
policy_control_name(title:title);
policy_set_kb(val:value);
policy_set_compliance(compliant:compliant);

exit(0);