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HighPrivilegeUserCountCheck.php
245 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * ====================================================================== |
| 5 | * LICENSE: This file is subject to the terms and conditions defined in * |
| 6 | * file 'license.txt', which is part of this source code package. * |
| 7 | * ====================================================================== |
| 8 | */ |
| 9 | |
| 10 | /** |
| 11 | * Check for the elevated number of high privilege users |
| 12 | * |
| 13 | * @package AAM |
| 14 | * @version 7.0.0 |
| 15 | */ |
| 16 | class AAM_Audit_HighPrivilegeUserCountCheck |
| 17 | { |
| 18 | |
| 19 | use AAM_Audit_AuditCheckTrait; |
| 20 | |
| 21 | /** |
| 22 | * Step ID |
| 23 | * |
| 24 | * @version 7.0.0 |
| 25 | */ |
| 26 | const ID = 'high_privilege_users_count'; |
| 27 | |
| 28 | /** |
| 29 | * List of core capabilities that can cause damage to the site through content |
| 30 | * |
| 31 | * @version 7.0.0 |
| 32 | */ |
| 33 | const CONTENT_HIGH_CAPS = [ |
| 34 | 'manage_categories', |
| 35 | 'unfiltered_html', |
| 36 | 'edit_published_pages', |
| 37 | 'delete_published_pages', |
| 38 | 'unfiltered_upload' |
| 39 | ]; |
| 40 | |
| 41 | /** |
| 42 | * List of core capabilities that can cause damage to the site |
| 43 | * |
| 44 | * @version 7.0.0 |
| 45 | */ |
| 46 | const SITE_HIGH_CAPS = [ |
| 47 | 'edit_themes', |
| 48 | 'edit_plugins', |
| 49 | 'edit_files', |
| 50 | 'activate_plugins', |
| 51 | 'manage_options', |
| 52 | 'delete_users', |
| 53 | 'create_users', |
| 54 | 'update_plugins', |
| 55 | 'delete_plugins', |
| 56 | 'install_plugins', |
| 57 | 'update_themes', |
| 58 | 'install_themes', |
| 59 | 'update_core', |
| 60 | 'promote_users', |
| 61 | 'delete_themes' |
| 62 | ]; |
| 63 | |
| 64 | /** |
| 65 | * Run the check |
| 66 | * |
| 67 | * @return array |
| 68 | * |
| 69 | * @access public |
| 70 | * @static |
| 71 | * |
| 72 | * @version 7.0.0 |
| 73 | */ |
| 74 | public static function run() |
| 75 | { |
| 76 | $issues = []; |
| 77 | $response = [ 'is_completed' => true ]; |
| 78 | |
| 79 | try { |
| 80 | // Step #1. Identifying the list of roles that have high privileges |
| 81 | $identified_roles = self::_get_high_privilege_roles( |
| 82 | self::_read_role_key_option() |
| 83 | ); |
| 84 | |
| 85 | // Scan for high privilege roles |
| 86 | array_push( |
| 87 | $issues, |
| 88 | ...self::_identify_elevated_user_count($identified_roles) |
| 89 | ); |
| 90 | } catch (Exception $e) { |
| 91 | array_push($issues, self::_format_issue( |
| 92 | 'APPLICATION_ERROR', |
| 93 | [ |
| 94 | 'message' => $e->getMessage() |
| 95 | ], |
| 96 | 'error' |
| 97 | )); |
| 98 | } |
| 99 | |
| 100 | if (count($issues) > 0) { |
| 101 | $response['issues'] = $issues; |
| 102 | } |
| 103 | |
| 104 | // Determine final status for the check |
| 105 | self::_determine_check_status($response); |
| 106 | |
| 107 | return $response; |
| 108 | } |
| 109 | |
| 110 | /** |
| 111 | * Get a collection of error messages for current step |
| 112 | * |
| 113 | * @return array |
| 114 | * @access private |
| 115 | * @static |
| 116 | * |
| 117 | * @version 7.0.0 |
| 118 | */ |
| 119 | private static function _get_message_templates() |
| 120 | { |
| 121 | return [ |
| 122 | 'ELEVATED_ADMIN_USER_COUNT' => __( |
| 123 | 'Detected elevated user count (%d) with admin level privileges', |
| 124 | 'advanced-access-manager' |
| 125 | ), |
| 126 | 'ELEVATED_EDITOR_USER_COUNT' => __( |
| 127 | 'Detected elevated user count (%d) with high content moderation privileges', |
| 128 | 'advanced-access-manager' |
| 129 | ) |
| 130 | ]; |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * Identify the list of roles that have high privilege caps |
| 135 | * |
| 136 | * @param array $db_roles |
| 137 | * |
| 138 | * @return array |
| 139 | * @access private |
| 140 | * |
| 141 | * @version 7.0.0 |
| 142 | */ |
| 143 | private static function _get_high_privilege_roles($db_roles) |
| 144 | { |
| 145 | $response = [ |
| 146 | 'content' => [], |
| 147 | 'website' => [] |
| 148 | ]; |
| 149 | |
| 150 | foreach($db_roles as $role_id => $role) { |
| 151 | $assigned_caps = array_keys( |
| 152 | array_filter($role['capabilities'], function($v) { |
| 153 | return !empty($v); |
| 154 | }) |
| 155 | ); |
| 156 | |
| 157 | $content = array_intersect($assigned_caps, self::CONTENT_HIGH_CAPS); |
| 158 | $website = array_intersect($assigned_caps, self::SITE_HIGH_CAPS); |
| 159 | |
| 160 | if (!empty($content) && $role_id !== 'administrator') { |
| 161 | array_push($response['content'], $role_id); |
| 162 | } |
| 163 | |
| 164 | if (!empty($website)) { |
| 165 | array_push($response['website'], $role_id); |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | return $response; |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * Identify the elevated number of high-privilege users |
| 174 | * |
| 175 | * @param array $elevated_roles |
| 176 | * |
| 177 | * @return array |
| 178 | * |
| 179 | * @access private |
| 180 | * @static |
| 181 | * |
| 182 | * @version 7.0.0 |
| 183 | */ |
| 184 | private static function _identify_elevated_user_count($elevated_roles) |
| 185 | { |
| 186 | global $wpdb; |
| 187 | |
| 188 | $issues = []; |
| 189 | $users = count_users(); |
| 190 | $sums = [ |
| 191 | 'content' => 0, |
| 192 | 'website' => 0 |
| 193 | ]; |
| 194 | |
| 195 | foreach($users['avail_roles'] as $role_id => $count) { |
| 196 | if (in_array($role_id, $elevated_roles['content'], true)) { |
| 197 | $sums['content'] += $count; |
| 198 | } |
| 199 | |
| 200 | if (in_array($role_id, $elevated_roles['website'], true)) { |
| 201 | $sums['website'] += $count; |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | $suggested_admins = AAM::api()->config->get( |
| 206 | 'service.security_audit.recommended_admins_count', 1 |
| 207 | ); |
| 208 | |
| 209 | // Let's calculate the recommended number of editors based on the number of |
| 210 | // published posts |
| 211 | $total = $wpdb->get_var( |
| 212 | "SELECT COUNT(*) FROM {$wpdb->posts} WHERE post_status = 'publish'" |
| 213 | ); |
| 214 | |
| 215 | // Let's be real here. How many articles one senior editor can review per |
| 216 | // biz day? Let's put an arbitrary number 4 with 250 working days, it may be |
| 217 | // max 1,000 articles per year. |
| 218 | $suggested_editors = AAM::api()->config->get( |
| 219 | 'service.security_audit.recommended_editors_count', ceil($total / 1000) |
| 220 | ); |
| 221 | |
| 222 | if ($sums['website'] > $suggested_admins) { |
| 223 | array_push($issues, self::_format_issue( |
| 224 | 'ELEVATED_ADMIN_USER_COUNT', |
| 225 | [ |
| 226 | 'user_count' => $sums['website'] |
| 227 | ], |
| 228 | 'critical' |
| 229 | )); |
| 230 | } |
| 231 | |
| 232 | if ($sums['content'] > $suggested_editors) { |
| 233 | array_push($issues, self::_format_issue( |
| 234 | 'ELEVATED_EDITOR_USER_COUNT', |
| 235 | [ |
| 236 | 'user_count' => $sums['content'] |
| 237 | ], |
| 238 | 'warning' |
| 239 | )); |
| 240 | } |
| 241 | |
| 242 | return $issues; |
| 243 | } |
| 244 | |
| 245 | } |