GaussDB Kernel: Configuring the Validity Period of User Roles

# Copyright (C) 2020 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.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.150452");
  script_version("2020-11-20T12:35:19+0000");
  script_tag(name:"last_modification", value:"2020-11-20 12:35:19 +0000 (Fri, 20 Nov 2020)");
  script_tag(name:"creation_date", value:"2020-11-20 10:52:10 +0000 (Fri, 20 Nov 2020)");
  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("GaussDB Kernel: Configuring the Validity Period of User Roles");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Policy");
  script_dependencies("compliance_tests.nasl", "gb_huawei_gaussdb_kernel_ssh_login_detect.nasl", "gaussdbkernel_authentication_information.nasl");
  script_mandatory_keys("huawei/gaussdb_kernel/detected", "Compliance/Launch");

  script_tag(name:"summary", value:"During role creation, the keyword VALID BEGIN is used to set the role validity
start time and VALID UNTIL to set the end time. If these two keywords are not
set, roles are permanently valid. The role expiration time on each node in the
GaussDB Kernel cluster depends on the OS clock on each node. Deploy the NTP
service during cluster deployment to synchronize time across cluster nodes.
Otherwise, the account expiration time among the nodes may be inconsistent.");

  exit(0);
}

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

cmd = "SELECT rolname,rolvalidbegin,rolvaliduntil FROM pg_roles WHERE rolsuper=false AND (rolvalidbegin IS NULL OR rolvaliduntil IS NULL);";
title = "Configuring the Validity Period of User Roles";
solution = "alter role <rolename> valid begin '2012-1-1 0:0:0' valid until '2014-1-1 0:0:0' ;";
default = "N/A";
test_type = "SQL_Query";

if( ! get_kb_item( "login/SSH/success" ) || ! sock = ssh_login_or_reuse_connection() ) {
  compliant = "incomplete";
  value = "error";
  comment = "No SSH connection to host";
}else if ( ! value = policy_gsql_cmd( socket:sock, query:cmd, db_type:"gaussdbkernel" ) ) {
  compliant = "yes";
  value = "N/A";
}else if ( value =~ "failed to connect" ) {
  compliant = "incomplete";
  value = "error";
  comment = "No connection to database";
}else{
  compliant = "no";
  value = ereg_replace(string:chomp(value), pattern:"^\s+", replace:"");
}

policy_reporting( result:value, default:default, compliant:compliant, fixtext:solution,
  type:test_type, test:cmd, info:comment );

policy_set_kbs( type:test_type, cmd:cmd, default:default, solution:solution, title:title,
  value:value, compliant:compliant );

exit( 0 );