skodak
1032 lines
39 KiB
PHP
1032 lines
39 KiB
PHP
<?php //$Id$
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///////////////////////////////////////////////////////////////////////////
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// //
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// NOTICE OF COPYRIGHT //
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// //
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// Moodle - Modular Object-Oriented Dynamic Learning Environment //
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// http://moodle.org //
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// //
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// Copyright (C) 1999 onwards Martin Dougiamas http://dougiamas.com //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation; either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details: //
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// //
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// http://www.gnu.org/copyleft/gpl.html //
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// //
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///////////////////////////////////////////////////////////////////////////
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require_once("$CFG->libdir/adminlib.php");
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define('REPORT_SECURITY_OK', 'ok');
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define('REPORT_SECURITY_INFO', 'info');
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define('REPORT_SECURITY_WARNING', 'warning');
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define('REPORT_SECURITY_SERIOUS', 'serious');
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define('REPORT_SECURITY_CRITICAL', 'critical');
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function report_security_get_issue_list() {
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return array(
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'report_security_check_globals',
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'report_security_check_unsecuredataroot',
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'report_security_check_displayerrors',
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'report_security_check_noauth',
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'report_security_check_embed',
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'report_security_check_mediafilterswf',
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'report_security_check_openprofiles',
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'report_security_check_google',
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'report_security_check_passwordpolicy',
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'report_security_check_emailchangeconfirmation',
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'report_security_check_cookiesecure',
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'report_security_check_configrw',
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'report_security_check_riskxss',
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'report_security_check_riskadmin',
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'report_security_check_defaultuserrole',
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'report_security_check_guestrole',
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'report_security_check_frontpagerole',
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'report_security_check_defaultcourserole',
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'report_security_check_courserole',
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);
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}
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///=============================================
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/// Issue checks
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///=============================================
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/**
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* Verifies register globals PHP setting.
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_globals($detailed=false) {
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$result = new object();
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$result->issue = 'report_security_check_globals';
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$result->name = get_string('check_globals_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = null;
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if (ini_get_bool('register_globals')) {
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$result->status = REPORT_SECURITY_CRITICAL;
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$result->info = get_string('check_globals_error', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_globals_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_globals_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies unsupported noauth setting
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_noauth($detailed=false) {
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global $CFG;
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$result = new object();
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$result->issue = 'report_security_check_noauth';
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$result->name = get_string('check_noauth_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = null;
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$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=manageauths";
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if (is_enabled_auth('none')) {
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$result->status = REPORT_SECURITY_CRITICAL;
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$result->info = get_string('check_noauth_error', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_noauth_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_noauth_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies if password policy set
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_passwordpolicy($detailed=false) {
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global $CFG;
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$result = new object();
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$result->issue = 'report_security_check_passwordpolicy';
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$result->name = get_string('check_passwordpolicy_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=sitepolicies";
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if (empty($CFG->passwordpolicy)) {
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$result->status = REPORT_SECURITY_WARNING;
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$result->info = get_string('check_passwordpolicy_error', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_passwordpolicy_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_passwordpolicy_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies sloppy embedding - this should have been removed long ago!!
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_embed($detailed=false) {
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global $CFG;
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$result = new object();
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$result->issue = 'report_security_check_embed';
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$result->name = get_string('check_embed_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=sitepolicies";
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if (!empty($CFG->allowobjectembed)) {
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$result->status = REPORT_SECURITY_CRITICAL;
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$result->info = get_string('check_embed_error', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_embed_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_embed_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies sloppy swf embedding - this should have been removed long ago!!
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_mediafilterswf($detailed=false) {
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global $CFG;
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$result = new object();
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$result->issue = 'report_security_check_mediafilterswf';
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$result->name = get_string('check_mediafilterswf_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=filtersettingfiltermediaplugin";
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if (!empty($CFG->textfilters)) {
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$activefilters = explode(',', $CFG->textfilters);
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} else {
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$activefilters = array();
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}
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if (array_search('filter/mediaplugin', $activefilters) !== false and !empty($CFG->filter_mediaplugin_enable_swf)) {
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$result->status = REPORT_SECURITY_CRITICAL;
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$result->info = get_string('check_mediafilterswf_error', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_mediafilterswf_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_mediafilterswf_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies fatal misconfiguration of dataroot
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_unsecuredataroot($detailed=false) {
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global $CFG;
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$result = new object();
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$result->issue = 'report_security_check_unsecuredataroot';
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$result->name = get_string('check_unsecuredataroot_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = null;
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$insecuredataroot = is_dataroot_insecure(true);
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if ($insecuredataroot == INSECURE_DATAROOT_WARNING) {
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$result->status = REPORT_SECURITY_SERIOUS;
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$result->info = get_string('check_unsecuredataroot_warning', 'report_security', $CFG->dataroot);
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} else if ($insecuredataroot == INSECURE_DATAROOT_ERROR) {
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$result->status = REPORT_SECURITY_CRITICAL;
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$result->info = get_string('check_unsecuredataroot_error', 'report_security', $CFG->dataroot);
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_unsecuredataroot_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_unsecuredataroot_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies disaplying of errors - problem for lib files and 3rd party code
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* because we can not disable debugging in these scripts (they do not include config.php)
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_displayerrors($detailed=false) {
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$result = new object();
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$result->issue = 'report_security_check_displayerrors';
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$result->name = get_string('check_displayerrors_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = null;
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if (defined('WARN_DISPLAY_ERRORS_ENABLED')) {
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$result->status = REPORT_SECURITY_WARNING;
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$result->info = get_string('check_displayerrors_error', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_displayerrors_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_displayerrors_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies open profiles - originaly open by default, not anymore because spammer abused it a lot
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_openprofiles($detailed=false) {
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global $CFG;
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$result = new object();
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$result->issue = 'report_security_check_openprofiles';
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$result->name = get_string('check_openprofiles_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=sitepolicies";
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if (empty($CFG->forcelogin) and empty($CFG->forceloginforprofiles)) {
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$result->status = REPORT_SECURITY_WARNING;
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$result->info = get_string('check_openprofiles_error', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_openprofiles_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_openprofiles_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies google access not combined with disabled guest access
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* because attackers might gain guest access by modifying browser signature.
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_google($detailed=false) {
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global $CFG;
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$result = new object();
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$result->issue = 'report_security_check_google';
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$result->name = get_string('check_google_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=sitepolicies";
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if (empty($CFG->opentogoogle)) {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_google_ok', 'report_security');
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} else if (!empty($CFG->guestloginbutton)) {
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$result->status = REPORT_SECURITY_INFO;
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$result->info = get_string('check_google_info', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_SERIOUS;
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$result->info = get_string('check_google_error', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_google_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies email confirmation - spammers were changing mails very often
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_emailchangeconfirmation($detailed=false) {
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global $CFG;
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$result = new object();
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$result->issue = 'report_security_check_emailchangeconfirmation';
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$result->name = get_string('check_emailchangeconfirmation_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=sitepolicies";
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if (empty($CFG->emailchangeconfirmation)) {
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$result->status = REPORT_SECURITY_WARNING;
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$result->info = get_string('check_emailchangeconfirmation_error', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_emailchangeconfirmation_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_emailchangeconfirmation_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies if https enabled only secure cookies allowed,
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* this prevents redirections and sending of cookies to unsecure port.
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_cookiesecure($detailed=false) {
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global $CFG;
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if (strpos($CFG->wwwroot, 'https://') !== 0) {
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return null;
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}
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$result = new object();
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$result->issue = 'report_security_check_cookiesecure';
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$result->name = get_string('check_cookiesecure_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=httpsecurity";
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if (empty($CFG->cookiesecure)) {
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$result->status = REPORT_SECURITY_SERIOUS;
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$result->info = get_string('check_cookiesecure_error', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_cookiesecure_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_cookiesecure_details', 'report_security');
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}
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return $result;
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}
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/**
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* Verifies config.php is not writable anymore after installation,
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* config files were changed on several outdated server.
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_configrw($detailed=false) {
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global $CFG;
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$result = new object();
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$result->issue = 'report_security_check_configrw';
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$result->name = get_string('check_configrw_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = null;
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$result->link = null;
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if (is_writable($CFG->dirroot.'/config.php')) {
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$result->status = REPORT_SECURITY_WARNING;
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$result->info = get_string('check_configrw_warning', 'report_security');
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} else {
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$result->status = REPORT_SECURITY_OK;
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$result->info = get_string('check_configrw_ok', 'report_security');
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}
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if ($detailed) {
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$result->details = get_string('check_configrw_details', 'report_security');
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}
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return $result;
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}
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/**
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* Lists all users with XSS risk, it would be great to combine this with risk trusts in user table,
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* unfortunately nobody implemented user trust UI yet :-(
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* @param bool $detailed
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* @return object result
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*/
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function report_security_check_riskxss($detailed=false) {
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global $DB;
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$result = new object();
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$result->issue = 'report_security_check_riskxss';
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$result->name = get_string('check_riskxss_name', 'report_security');
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$result->info = null;
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$result->details = null;
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$result->status = REPORT_SECURITY_WARNING;
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$result->link = null;
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$params = array('capallow'=>CAP_ALLOW);
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$sqlfrom = "FROM {role_capabilities} rc
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JOIN {capabilities} cap ON cap.name = rc.capability
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JOIN {context} c ON c.id = rc.contextid
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JOIN {context} sc ON (sc.path = c.path OR sc.path LIKE ".$DB->sql_concat('c.path', "'/%'").")
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JOIN {role_assignments} ra ON (ra.contextid = sc.id AND ra.roleid = rc.roleid)
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JOIN {user} u ON u.id = ra.userid
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WHERE ".$DB->sql_bitand('cap.riskbitmask', RISK_XSS)." <> 0
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AND rc.permission = :capallow
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AND u.deleted = 0";
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$count = $DB->count_records_sql("SELECT COUNT(DISTINCT u.id) $sqlfrom", $params);
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$result->info = get_string('check_riskxss_warning', 'report_security', $count);
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if ($detailed) {
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$users = $DB->get_records_sql("SELECT DISTINCT u.id, u.firstname, u.lastname, u.picture, u.imagealt $sqlfrom", $params);
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foreach ($users as $uid=>$user) {
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$users[$uid] = fullname($user);
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}
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$users = implode(', ', $users);
|
|
$result->details = get_string('check_riskxss_details', 'report_security', $users);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Verifies sanity of default user role.
|
|
* @param bool $detailed
|
|
* @return object result
|
|
*/
|
|
function report_security_check_defaultuserrole($detailed=false) {
|
|
global $DB, $CFG;
|
|
|
|
$result = new object();
|
|
$result->issue = 'report_security_check_defaultuserrole';
|
|
$result->name = get_string('check_defaultuserrole_name', 'report_security');
|
|
$result->info = null;
|
|
$result->details = null;
|
|
$result->status = null;
|
|
$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=userpolicies";
|
|
|
|
if (!$default_role = $DB->get_record('role', array('id'=>$CFG->defaultuserroleid))) {
|
|
$result->status = REPORT_SECURITY_WARNING;
|
|
$result->info = get_string('check_defaultuserrole_notset', 'report_security');
|
|
$result->details = $result->info;
|
|
|
|
return $result;
|
|
}
|
|
|
|
// first test if do anything enabled - that would be really crazy!
|
|
$params = array('doanything'=>'moodle/site:doanything', 'capallow'=>CAP_ALLOW, 'roleid'=>$default_role->id);
|
|
$sql = "SELECT COUNT(DISTINCT rc.contextid)
|
|
FROM {role_capabilities} rc
|
|
WHERE rc.capability = :doanything
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
|
|
$anythingcount = $DB->count_records_sql($sql, $params);
|
|
|
|
// risky caps - usually very dangerous
|
|
$params = array('capallow'=>CAP_ALLOW, 'roleid'=>$default_role->id);
|
|
$sql = "SELECT COUNT(DISTINCT rc.contextid)
|
|
FROM {role_capabilities} rc
|
|
JOIN {capabilities} cap ON cap.name = rc.capability
|
|
WHERE ".$DB->sql_bitand('cap.riskbitmask', (RISK_XSS | RISK_CONFIG | RISK_DATALOSS))." <> 0
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
|
|
$riskycount = $DB->count_records_sql($sql, $params);
|
|
|
|
// default role can not have view cap in all courses - this would break moodle badly
|
|
$viewcap = $DB->record_exists('role_capabilities', array('roleid'=>$default_role->id, 'permission'=>CAP_ALLOW, 'capability'=>'moodle/course:view'));
|
|
|
|
// it may have either no or 'user' legacy type - nothing else, or else it would break during upgrades badly
|
|
$legacyok = false;
|
|
$params = array('capallow'=>CAP_ALLOW, 'roleid'=>$default_role->id, 'legacy'=>'moodle/legacy:%');
|
|
$sql = "SELECT rc.capability, 1
|
|
FROM {role_capabilities} rc
|
|
WHERE rc.capability LIKE :legacy
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
$legacycaps = $DB->get_records_sql($sql, $params);
|
|
if (!$legacycaps) {
|
|
$legacyok = true;
|
|
} else if (count($legacycaps) == 1 and isset($legacycaps['moodle/legacy:user'])) {
|
|
$legacyok = true;
|
|
}
|
|
|
|
if ($anythingcount or $riskycount or $viewcap or !$legacyok) {
|
|
$result->status = REPORT_SECURITY_CRITICAL;
|
|
$result->info = get_string('check_defaultuserrole_error', 'report_security', format_string($default_role->name));
|
|
|
|
} else {
|
|
$result->status = REPORT_SECURITY_OK;
|
|
$result->info = get_string('check_defaultuserrole_ok', 'report_security');
|
|
}
|
|
|
|
if ($detailed) {
|
|
$result->details = get_string('check_defaultuserrole_details', 'report_security');
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Verifies sanity of guest role
|
|
* @param bool $detailed
|
|
* @return object result
|
|
*/
|
|
function report_security_check_guestrole($detailed=false) {
|
|
global $DB, $CFG;
|
|
|
|
$result = new object();
|
|
$result->issue = 'report_security_check_guestrole';
|
|
$result->name = get_string('check_guestrole_name', 'report_security');
|
|
$result->info = null;
|
|
$result->details = null;
|
|
$result->status = null;
|
|
$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=userpolicies";
|
|
|
|
if (!$guest_role = $DB->get_record('role', array('id'=>$CFG->guestroleid))) {
|
|
$result->status = REPORT_SECURITY_WARNING;
|
|
$result->info = get_string('check_guestrole_notset', 'report_security');
|
|
$result->details = $result->info;
|
|
|
|
return $result;
|
|
}
|
|
|
|
// first test if do anything enabled - that would be really crazy!
|
|
$params = array('doanything'=>'moodle/site:doanything', 'capallow'=>CAP_ALLOW, 'roleid'=>$guest_role->id);
|
|
$sql = "SELECT COUNT(DISTINCT rc.contextid)
|
|
FROM {role_capabilities} rc
|
|
WHERE rc.capability = :doanything
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
|
|
$anythingcount = $DB->count_records_sql($sql, $params);
|
|
|
|
// risky caps - usually very dangerous
|
|
$params = array('capallow'=>CAP_ALLOW, 'roleid'=>$guest_role->id);
|
|
$sql = "SELECT COUNT(DISTINCT rc.contextid)
|
|
FROM {role_capabilities} rc
|
|
JOIN {capabilities} cap ON cap.name = rc.capability
|
|
WHERE ".$DB->sql_bitand('cap.riskbitmask', (RISK_XSS | RISK_CONFIG | RISK_DATALOSS))." <> 0
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
|
|
$riskycount = $DB->count_records_sql($sql, $params);
|
|
|
|
// it may have either no or 'guest' legacy type - nothing else, or else it would break during upgrades badly
|
|
$legacyok = false;
|
|
$params = array('capallow'=>CAP_ALLOW, 'roleid'=>$guest_role->id, 'legacy'=>'moodle/legacy:%');
|
|
$sql = "SELECT rc.capability, 1
|
|
FROM {role_capabilities} rc
|
|
WHERE rc.capability LIKE :legacy
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
$legacycaps = $DB->get_records_sql($sql, $params);
|
|
if (!$legacycaps) {
|
|
$legacyok = true;
|
|
} else if (count($legacycaps) == 1 and isset($legacycaps['moodle/legacy:guest'])) {
|
|
$legacyok = true;
|
|
}
|
|
|
|
if ($anythingcount or $riskycount or !$legacyok) {
|
|
$result->status = REPORT_SECURITY_CRITICAL;
|
|
$result->info = get_string('check_guestrole_error', 'report_security', format_string($guest_role->name));
|
|
|
|
} else {
|
|
$result->status = REPORT_SECURITY_OK;
|
|
$result->info = get_string('check_guestrole_ok', 'report_security');
|
|
}
|
|
|
|
if ($detailed) {
|
|
$result->details = get_string('check_guestrole_details', 'report_security');
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Verifies sanity of frontpage role
|
|
* @param bool $detailed
|
|
* @return object result
|
|
*/
|
|
function report_security_check_frontpagerole($detailed=false) {
|
|
global $DB, $CFG;
|
|
|
|
$result = new object();
|
|
$result->issue = 'report_security_check_frontpagerole';
|
|
$result->name = get_string('check_frontpagerole_name', 'report_security');
|
|
$result->info = null;
|
|
$result->details = null;
|
|
$result->status = null;
|
|
$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=frontpagesettings";
|
|
|
|
if (!$frontpage_role = $DB->get_record('role', array('id'=>$CFG->defaultfrontpageroleid))) {
|
|
$result->status = REPORT_SECURITY_INFO;
|
|
$result->info = get_string('check_frontpagerole_notset', 'report_security');
|
|
$result->details = get_string('check_frontpagerole_details', 'report_security');
|
|
|
|
return $result;
|
|
}
|
|
|
|
// first test if do anything enabled - that would be really crazy!
|
|
$params = array('doanything'=>'moodle/site:doanything', 'capallow'=>CAP_ALLOW, 'roleid'=>$frontpage_role->id);
|
|
$sql = "SELECT COUNT(DISTINCT rc.contextid)
|
|
FROM {role_capabilities} rc
|
|
WHERE rc.capability = :doanything
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
|
|
$anythingcount = $DB->count_records_sql($sql, $params);
|
|
|
|
// risky caps - usually very dangerous
|
|
$params = array('capallow'=>CAP_ALLOW, 'roleid'=>$frontpage_role->id);
|
|
$sql = "SELECT COUNT(DISTINCT rc.contextid)
|
|
FROM {role_capabilities} rc
|
|
JOIN {capabilities} cap ON cap.name = rc.capability
|
|
WHERE ".$DB->sql_bitand('cap.riskbitmask', (RISK_XSS | RISK_CONFIG | RISK_DATALOSS))." <> 0
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
|
|
$riskycount = $DB->count_records_sql($sql, $params);
|
|
|
|
// there is no legacy role type for frontpage yet - anyway we can not allow teachers or admins there!
|
|
$params = array('capallow'=>CAP_ALLOW, 'roleid'=>$frontpage_role->id, 'legacy'=>'moodle/legacy:%');
|
|
$sql = "SELECT rc.capability, 1
|
|
FROM {role_capabilities} rc
|
|
WHERE rc.capability LIKE :legacy
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
$legacycaps = $DB->get_records_sql($sql, $params);
|
|
$legacyok = (!isset($legacycaps['moodle/legacy:teacher'])
|
|
and !isset($legacycaps['moodle/legacy:editingteacher'])
|
|
and !isset($legacycaps['moodle/legacy:coursecreator'])
|
|
and !isset($legacycaps['moodle/legacy:admin']));
|
|
|
|
if ($anythingcount or $riskycount or !$legacyok) {
|
|
$result->status = REPORT_SECURITY_CRITICAL;
|
|
$result->info = get_string('check_frontpagerole_error', 'report_security', format_string($frontpage_role->name));
|
|
|
|
} else {
|
|
$result->status = REPORT_SECURITY_OK;
|
|
$result->info = get_string('check_frontpagerole_ok', 'report_security');
|
|
}
|
|
|
|
if ($detailed) {
|
|
$result->details = get_string('check_frontpagerole_details', 'report_security');
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Verifies sanity of site default course role.
|
|
* @param bool $detailed
|
|
* @return object result
|
|
*/
|
|
function report_security_check_defaultcourserole($detailed=false) {
|
|
global $DB, $CFG;
|
|
|
|
$problems = array();
|
|
|
|
$result = new object();
|
|
$result->issue = 'report_security_check_defaultcourserole';
|
|
$result->name = get_string('check_defaultcourserole_name', 'report_security');
|
|
$result->info = null;
|
|
$result->details = null;
|
|
$result->status = null;
|
|
$result->link = "$CFG->wwwroot/$CFG->admin/settings.php?section=userpolicies";
|
|
|
|
if ($detailed) {
|
|
$result->details = get_string('check_defaultcourserole_details', 'report_security');
|
|
}
|
|
|
|
if (!$student_role = $DB->get_record('role', array('id'=>$CFG->defaultcourseroleid))) {
|
|
$result->status = REPORT_SECURITY_WARNING;
|
|
$result->info = get_string('check_defaultcourserole_notset', 'report_security');
|
|
$result->details = get_string('check_defaultcourserole_details', 'report_security');
|
|
|
|
return $result;
|
|
}
|
|
|
|
// first test if do anything enabled - that would be really crazy!
|
|
$params = array('doanything'=>'moodle/site:doanything', 'capallow'=>CAP_ALLOW, 'roleid'=>$student_role->id);
|
|
$sql = "SELECT DISTINCT rc.contextid
|
|
FROM {role_capabilities} rc
|
|
WHERE rc.capability = :doanything
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
|
|
if ($anything_contexts = $DB->get_records_sql($sql, $params)) {
|
|
foreach($anything_contexts as $contextid) {
|
|
if ($contextid == SYSCONTEXTID) {
|
|
$a = "$CFG->wwwroot/$CFG->admin/roles/define.php?action=view&roleid=$CFG->defaultcourseroleid";
|
|
} else {
|
|
$a = "$CFG->wwwroot/$CFG->admin/roles/override.php?contextid=$contextid&roleid=$CFG->defaultcourseroleid";
|
|
}
|
|
$problems[] = get_string('check_defaultcourserole_anything', 'report_security', $a);
|
|
}
|
|
}
|
|
|
|
// risky caps - usually very dangerous
|
|
$params = array('capallow'=>CAP_ALLOW, 'roleid'=>$student_role->id);
|
|
$sql = "SELECT DISTINCT rc.contextid
|
|
FROM {role_capabilities} rc
|
|
JOIN {capabilities} cap ON cap.name = rc.capability
|
|
WHERE ".$DB->sql_bitand('cap.riskbitmask', (RISK_XSS | RISK_CONFIG | RISK_DATALOSS))." <> 0
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
|
|
if ($riskycontexts = $DB->get_records_sql($sql, $params)) {
|
|
foreach($riskycontexts as $contextid=>$unused) {
|
|
if ($contextid == SYSCONTEXTID) {
|
|
$a = "$CFG->wwwroot/$CFG->admin/roles/define.php?action=view&roleid=$CFG->defaultcourseroleid";
|
|
} else {
|
|
$a = "$CFG->wwwroot/$CFG->admin/roles/override.php?contextid=$contextid&roleid=$CFG->defaultcourseroleid";
|
|
}
|
|
$problems[] = get_string('check_defaultcourserole_risky', 'report_security', $a);
|
|
}
|
|
}
|
|
|
|
// course creator or administrator does not make any sense here
|
|
$params = array('capallow'=>CAP_ALLOW, 'roleid'=>$student_role->id, 'legacy'=>'moodle/legacy:%');
|
|
$sql = "SELECT rc.capability, 1
|
|
FROM {role_capabilities} rc
|
|
WHERE rc.capability LIKE :legacy
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid = :roleid";
|
|
$legacycaps = $DB->get_records_sql($sql, $params);
|
|
if (isset($legacycaps['moodle/legacy:coursecreator']) or isset($legacycaps['moodle/legacy:admin'])) {
|
|
$problems[] = get_string('check_defaultcourserole_legacy', 'report_security');
|
|
}
|
|
|
|
if ($problems) {
|
|
$result->status = REPORT_SECURITY_CRITICAL;
|
|
$result->info = get_string('check_defaultcourserole_error', 'report_security', format_string($student_role->name));
|
|
if ($detailed) {
|
|
$result->details .= "<ul>";
|
|
foreach ($problems as $problem) {
|
|
$result->details .= "<li>$problem</li>";
|
|
}
|
|
$result->details .= "</ul>";
|
|
}
|
|
|
|
} else {
|
|
$result->status = REPORT_SECURITY_OK;
|
|
$result->info = get_string('check_defaultcourserole_ok', 'report_security');
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Verifies sanity of default roles in courses.
|
|
* @param bool $detailed
|
|
* @return object result
|
|
*/
|
|
function report_security_check_courserole($detailed=false) {
|
|
global $DB, $CFG, $SITE;
|
|
|
|
$problems = array();
|
|
|
|
$result = new object();
|
|
$result->issue = 'report_security_check_courserole';
|
|
$result->name = get_string('check_courserole_name', 'report_security');
|
|
$result->info = null;
|
|
$result->details = null;
|
|
$result->status = null;
|
|
$result->link = null;
|
|
|
|
if ($detailed) {
|
|
$result->details = get_string('check_courserole_details', 'report_security');
|
|
}
|
|
|
|
// get list of all student roles selected in courses excluding the default course role
|
|
$params = array('siteid'=>$SITE->id, 'defaultcourserole'=>$CFG->defaultcourseroleid);
|
|
$sql = "SELECT r.*
|
|
FROM {role} r
|
|
JOIN {course} c ON c.defaultrole = r.id
|
|
WHERE c.id <> :siteid AND r.id <> :defaultcourserole";
|
|
|
|
if (!$student_roles = $DB->get_records_sql($sql, $params)) {
|
|
$result->status = REPORT_SECURITY_OK;
|
|
$result->info = get_string('check_courserole_notyet', 'report_security');
|
|
$result->details = get_string('check_courserole_details', 'report_security');
|
|
|
|
return $result;
|
|
}
|
|
|
|
$roleids = array_keys($student_roles);
|
|
|
|
// first test if do anything enabled - that would be really crazy!!!!!!
|
|
list($inroles, $params) = $DB->get_in_or_equal($roleids, SQL_PARAMS_NAMED, 'r0', true);
|
|
$params = array_merge($params, array('doanything'=>'moodle/site:doanything', 'capallow'=>CAP_ALLOW));
|
|
$params['doanything'] = 'moodle/site:doanything';
|
|
$params['capallow'] = CAP_ALLOW;
|
|
$sql = "SELECT rc.roleid, rc.contextid
|
|
FROM {role_capabilities} rc
|
|
WHERE rc.capability = :doanything
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid $inroles
|
|
GROUP BY rc.roleid, rc.contextid
|
|
ORDER BY rc.roleid, rc.contextid";
|
|
|
|
$rs = $DB->get_recordset_sql($sql, $params);
|
|
foreach($rs as $res) {
|
|
$roleid = $res->roleid;
|
|
$contextid = $res->contextid;
|
|
if ($contextid == SYSCONTEXTID) {
|
|
$a = "$CFG->wwwroot/$CFG->admin/roles/define.php?action=view&roleid=$roleid";
|
|
} else {
|
|
$a = "$CFG->wwwroot/$CFG->admin/roles/override.php?contextid=$contextid&roleid=$roleid";
|
|
}
|
|
$problems[] = get_string('check_courserole_anything', 'report_security', $a);
|
|
}
|
|
$rs->close();
|
|
|
|
// risky caps in any level - usually very dangerous!!
|
|
list($inroles, $params) = $DB->get_in_or_equal($roleids, SQL_PARAMS_NAMED, 'r0', true);
|
|
$params = array_merge($params, array('capallow'=>CAP_ALLOW));
|
|
$sql = "SELECT rc.roleid, rc.contextid
|
|
FROM {role_capabilities} rc
|
|
JOIN {capabilities} cap ON cap.name = rc.capability
|
|
WHERE ".$DB->sql_bitand('cap.riskbitmask', (RISK_XSS | RISK_CONFIG | RISK_DATALOSS))." <> 0
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid $inroles
|
|
GROUP BY rc.roleid, rc.contextid
|
|
ORDER BY rc.roleid, rc.contextid";
|
|
$rs = $DB->get_recordset_sql($sql, $params);
|
|
foreach($rs as $res) {
|
|
$roleid = $res->roleid;
|
|
$contextid = $res->contextid;
|
|
if ($contextid == SYSCONTEXTID) {
|
|
$a = "$CFG->wwwroot/$CFG->admin/roles/define.php?action=view&roleid=$roleid";
|
|
} else {
|
|
$a = "$CFG->wwwroot/$CFG->admin/roles/override.php?contextid=$contextid&roleid=$roleid";
|
|
}
|
|
$problems[] = get_string('check_courserole_risky', 'report_security', $a);
|
|
}
|
|
$rs->close();
|
|
|
|
// course creator or administrator does not make any sense here!
|
|
list($inroles, $params) = $DB->get_in_or_equal($roleids, SQL_PARAMS_NAMED, 'r0', true);
|
|
$params = array_merge($params, array('capallow'=>CAP_ALLOW, 'creator'=>'moodle/legacy:coursecreator', 'admin'=>'moodle/legacy:admin'));
|
|
$sql = "SELECT DISTINCT rc.roleid
|
|
FROM {role_capabilities} rc
|
|
WHERE (rc.capability = :creator OR rc.capability = :admin)
|
|
AND rc.permission = :capallow
|
|
AND rc.roleid $inroles";
|
|
if ($legacys = $DB->get_records_sql($sql, $params)) {
|
|
foreach ($legacys as $roleid=>$unused) {
|
|
$a = "$CFG->wwwroot/$CFG->admin/roles/define.php?action=view&roleid=$roleid";
|
|
$problems[] = get_string('check_defaultcourserole_legacy', 'report_security', $a);
|
|
}
|
|
}
|
|
|
|
|
|
if ($problems) {
|
|
$result->status = REPORT_SECURITY_CRITICAL;
|
|
$result->info = get_string('check_courserole_error', 'report_security');
|
|
if ($detailed) {
|
|
$result->details .= "<ul>";
|
|
foreach ($problems as $problem) {
|
|
$result->details .= "<li>$problem</li>";
|
|
}
|
|
$result->details .= "</ul>";
|
|
}
|
|
|
|
} else {
|
|
$result->status = REPORT_SECURITY_OK;
|
|
$result->info = get_string('check_courserole_ok', 'report_security');
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Lists all admins.
|
|
* @param bool $detailed
|
|
* @return object result
|
|
*/
|
|
function report_security_check_riskadmin($detailed=false) {
|
|
global $DB;
|
|
|
|
$result = new object();
|
|
$result->issue = 'report_security_check_riskadmin';
|
|
$result->name = get_string('check_riskadmin_name', 'report_security');
|
|
$result->info = null;
|
|
$result->details = null;
|
|
$result->status = null;
|
|
$result->link = null;
|
|
|
|
$params = array('doanything'=>'moodle/site:doanything', 'syscontextid'=>SYSCONTEXTID, 'capallow'=>CAP_ALLOW);
|
|
|
|
$sql = "SELECT DISTINCT u.id, u.firstname, u.lastname, u.picture, u.imagealt
|
|
FROM {role_capabilities} rc
|
|
JOIN {role_assignments} ra ON (ra.contextid = rc.contextid AND ra.roleid = rc.roleid)
|
|
JOIN {user} u ON u.id = ra.userid
|
|
WHERE rc.capability = :doanything
|
|
AND rc.permission = :capallow
|
|
AND u.deleted = 0
|
|
AND rc.contextid = :syscontextid";
|
|
|
|
$admins = $DB->get_records_sql($sql, $params);
|
|
|
|
$sqlfrom = "FROM {role_capabilities} rc
|
|
JOIN {context} c ON c.id = rc.contextid
|
|
JOIN {context} sc ON (sc.path = c.path OR sc.path LIKE ".$DB->sql_concat('c.path', "'/%'").")
|
|
JOIN {role_assignments} ra ON (ra.contextid = sc.id AND ra.roleid = rc.roleid)
|
|
JOIN {user} u ON u.id = ra.userid
|
|
WHERE rc.capability = :doanything
|
|
AND rc.permission = :capallow
|
|
AND u.deleted = 0
|
|
AND ra.contextid <> :syscontextid";
|
|
|
|
$count = $DB->count_records_sql("SELECT COUNT(DISTINCT u.id) $sqlfrom", $params);
|
|
|
|
if (!$count) {
|
|
$result->status = REPORT_SECURITY_OK;
|
|
$result->info = get_string('check_riskadmin_ok', 'report_security', count($admins));
|
|
|
|
if ($detailed) {
|
|
foreach ($admins as $uid=>$user) {
|
|
$admins[$uid] = fullname($user);
|
|
}
|
|
$admins = implode(', ', $admins);
|
|
$result->details = get_string('check_riskadmin_detailsok', 'report_security', $admins);
|
|
}
|
|
|
|
} else {
|
|
$result->status = REPORT_SECURITY_WARNING;
|
|
$a = (object)array('admincount'=>count($admins), 'unsupcount'=>$count);
|
|
$result->info = get_string('check_riskadmin_warning', 'report_security', $a);
|
|
|
|
if ($detailed) {
|
|
foreach ($admins as $uid=>$user) {
|
|
$admins[$uid] = fullname($user);
|
|
}
|
|
$admins = implode(', ', $admins);
|
|
$users = $DB->get_records_sql("SELECT DISTINCT u.id, u.firstname, u.lastname, u.picture, u.imagealt $sqlfrom", $params);
|
|
foreach ($users as $uid=>$user) {
|
|
$users[$uid] = fullname($user);
|
|
}
|
|
$users = implode(', ', $users);
|
|
$a = (object)array('admins'=>$admins, 'unsupported'=>$users);
|
|
$result->details = get_string('check_riskadmin_detailswarning', 'report_security', $a);
|
|
}
|
|
}
|
|
|
|
return $result;
|
|
}
|