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Vigilant – 100% Free Security Suite: Firewall, 2FA, Login, Headers, Scanner… / 2.11.12
Vigilant – 100% Free Security Suite: Firewall, 2FA, Login, Headers, Scanner… v2.11.12
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← All changes | includes/class-user-security.php +505 -99 2.11.42.11.12 View file →
@@ -42,20 +42,57 @@
42 42
43 43 /**
44 44 * Constructor
45 45 *
46 - * @param Vigilante_Settings $settings Settings instance.
47 - * @param Vigilante_Activity_Log $activity_log Activity log instance.
46 + * @param Vigilante_Settings $settings Settings instance.
47 + * @param Vigilante_Activity_Log $activity_log Activity log instance.
48 + * @param bool $enforcement_only Register only what enforces
49 + * state already written to an
50 + * account. See
51 + * init_enforcement_hooks().
48 52 */
49 - public function __construct( $settings, $activity_log ) {
53 + public function __construct( $settings, $activity_log, $enforcement_only = false ) {
50 54 $this->settings = $settings;
51 55 $this->activity_log = $activity_log;
52 56 $this->options = $settings->get_section( 'user_security' );
53 57
58 + if ( $enforcement_only ) {
59 + $this->init_enforcement_hooks();
60 + return;
61 + }
62 +
54 63 $this->init_hooks();
55 64 }
56 65
57 66 /**
67 + * The hooks that enforce state already written to an account
68 + *
69 + * A forced password reset and a registration waiting for approval are not
70 + * settings, they are marks on somebody's account, and the action that wrote
71 + * them already happened: sessions destroyed, emails sent, the activity log
72 + * saying those accounts cannot get in until they reset or are approved.
73 + *
74 + * Until 2.11.10 both were registered inside the module gate, so turning User
75 + * Security off let every one of those accounts back in with their old
76 + * password, silently and with the flags still in place saying the opposite.
77 + * The forced reset is deliberately not destructive on the password (see
78 + * force_password_reset(), which avoids wp_set_password() so the reset link
79 + * keeps working), so this filter was the only thing holding the door.
80 + * Found by the file-by-file review of 2.11.10.
81 + *
82 + * These two are therefore registered whether the module is on or off. Both
83 + * return immediately when the account carries no mark, so the cost on a site
84 + * that never used either feature is one meta read at login.
85 + *
86 + * @since 2.11.10
87 + */
88 + private function init_enforcement_hooks() {
89 + add_filter( 'authenticate', array( $this, 'check_force_reset_on_login' ), 30, 3 );
90 + add_action( 'after_password_reset', array( $this, 'clear_force_reset_meta' ), 10, 1 );
91 + add_filter( 'wp_authenticate_user', array( $this, 'block_pending_user_login' ), 15, 2 );
92 + }
93 +
94 + /**
58 95 * Initialize hooks
59 96 */
60 97 private function init_hooks() {
61 98 // Block insecure usernames
@@ -104,9 +141,10 @@
104 141 // Registration approval
105 142 $registration_approval = $this->options['registration_approval'] ?? array();
106 143 if ( ! empty( $registration_approval['enabled'] ) ) {
107 144 add_action( 'user_register', array( $this, 'set_user_pending_approval' ), 5 );
108 - add_filter( 'wp_authenticate_user', array( $this, 'block_pending_user_login' ), 15, 2 );
145 + // The blocking half is registered by init_enforcement_hooks(), so an
146 + // account already waiting keeps waiting if the feature is turned off.
109 147 add_action( 'admin_notices', array( $this, 'show_pending_users_notice' ) );
110 148 }
111 149
112 150 // Session limits
@@ -131,8 +169,13 @@
131 169 if ( ! empty( $password_expiration['enabled'] ) ) {
132 170 add_action( 'wp_login', array( $this, 'check_password_expiration' ), 10, 2 );
133 171 add_action( 'admin_notices', array( $this, 'show_password_expiration_notice' ) );
134 172 add_action( 'admin_init', array( $this, 'force_password_change_redirect' ) );
173 + // Enforcement beyond wp-admin: REST and the front end, so an expired
174 + // password cannot keep operating outside the redirect (2.11.9).
175 + add_filter( 'rest_authentication_errors', array( $this, 'block_expired_password_rest' ), 20 );
176 + add_action( 'template_redirect', array( $this, 'force_password_change_frontend' ) );
177 + add_filter( 'authenticate', array( $this, 'block_expired_password_xmlrpc' ), 30, 1 );
135 178 add_action( 'profile_update', array( $this, 'update_password_change_date' ), 10, 2 );
136 179 add_action( 'user_register', array( $this, 'set_initial_password_date' ) );
137 180 add_action( 'user_profile_update_errors', array( $this, 'check_password_history' ), 10, 3 );
138 181
@@ -160,11 +203,11 @@
160 203 add_filter( 'registration_redirect', array( $this, 'custom_registration_redirect' ) );
161 204 add_action( 'login_message', array( $this, 'show_registration_pending_message' ) );
162 205 }
163 206
164 - // Force password reset login message (always active, independent of settings)
165 - add_filter( 'authenticate', array( $this, 'check_force_reset_on_login' ), 30, 3 );
166 - add_action( 'after_password_reset', array( $this, 'clear_force_reset_meta' ), 10, 1 );
207 + // What enforces marks already written to an account, which stays
208 + // registered even with the module off. See init_enforcement_hooks().
209 + $this->init_enforcement_hooks();
167 210 }
168 211
169 212 /**
170 213 * Validate username on profile update
@@ -1206,22 +1249,27 @@
1206 1249 * @param string $password Password.
1207 1250 * @return WP_User|WP_Error|null
1208 1251 */
1209 1252 public function check_force_reset_on_login( $user, $username, $password ) {
1210 - // Resolve the target user. The flag must be evaluated whether the
1211 - // credentials matched (WP_User) or not (WP_Error).
1212 - if ( $user instanceof WP_User ) {
1213 - $login_user = $user;
1214 - } else {
1215 - $login_user = get_user_by( 'login', $username );
1216 - if ( ! $login_user ) {
1217 - $login_user = get_user_by( 'email', $username );
1218 - }
1253 + /*
1254 + * Only a login that would otherwise have succeeded is turned into this
1255 + * rejection. Wrong credentials are left exactly as WordPress reported
1256 + * them, and they are counted like any other failed login.
1257 + *
1258 + * Until 2.11.12 this ran for a WP_Error too, resolving the account from
1259 + * the username, and replaced an incorrect_password with the rejection
1260 + * below. A rejection of Vigilant's own is not counted towards the brute
1261 + * force lockout, so any account with a pending forced reset could be
1262 + * guessed at without limit: measured on 17 Sep 2026 against 2.11.11 and
1263 + * against the first build of 2.11.12, six wrong passwords in a row, none
1264 + * of them counted and no lockout at the end. The message this function
1265 + * exists to show belongs to whoever typed the right password.
1266 + */
1267 + if ( ! ( $user instanceof WP_User ) ) {
1268 + return $user;
1219 1269 }
1220 1270
1221 - if ( ! $login_user ) {
1222 - return $user;
1223 - }
1271 + $login_user = $user;
1224 1272
1225 1273 // Check if this user has a pending forced reset.
1226 1274 $force_reset = get_user_meta( $login_user->ID, 'vigilante_force_reset_pending', true );
1227 1275 if ( ! $force_reset ) {
@@ -1227,17 +1275,11 @@
1227 1275 if ( ! $force_reset ) {
1228 1276 return $user;
1229 1277 }
1230 1278
1231 - // If credentials were wrong with an error other than incorrect_password
1232 - // (e.g. a Vigilant lockout, pending approval), don't shadow it.
1233 - if ( is_wp_error( $user ) && ! in_array( 'incorrect_password', $user->get_error_codes(), true ) ) {
1234 - return $user;
1235 - }
1279 + // Not counted towards the brute force lockout: the rejection is
1280 + // recognised by its error code (Vigilante_Login_Security::CONTROLLED_REJECTIONS).
1236 1281
1237 - // Skip brute force counter for this controlled rejection.
1238 - add_filter( 'vigilante_skip_failed_login_count', '__return_true' );
1239 -
1240 1282 // Surface the controlled rejection in the activity log so the admin
1241 1283 // can tell apart "user fails login because they typed wrong password"
1242 1284 // from "user fails login because we are forcing a reset".
1243 1285 if ( $this->activity_log ) {
@@ -1309,11 +1351,11 @@
1309 1351 if ( empty( $needs_approval ) ) {
1310 1352 return;
1311 1353 }
1312 1354
1313 - // Set pending status
1314 - update_user_meta( $user_id, 'vigilante_pending_approval', true );
1315 - update_user_meta( $user_id, 'vigilante_pending_since', time() );
1355 + // Set pending status, on this site only (see site_user_meta_key()).
1356 + update_user_meta( $user_id, self::site_user_meta_key( 'vigilante_pending_approval' ), true );
1357 + update_user_meta( $user_id, self::site_user_meta_key( 'vigilante_pending_since' ), time() );
1316 1358
1317 1359 // Log
1318 1360 if ( $this->activity_log ) {
1319 1361 $this->activity_log->log(
@@ -1346,14 +1388,9 @@
1346 1388 if ( is_wp_error( $user ) ) {
1347 1389 return $user;
1348 1390 }
1349 1391
1350 - $is_pending = get_user_meta( $user->ID, 'vigilante_pending_approval', true );
1351 -
1352 - if ( $is_pending ) {
1353 - // Mark this as a controlled rejection (not a brute force attempt)
1354 - add_filter( 'vigilante_skip_failed_login_count', '__return_true' );
1355 -
1392 + if ( self::is_pending_anywhere( $user->ID ) ) {
1356 1393 return new WP_Error(
1357 1394 'pending_approval',
1358 1395 __( '<strong>Account pending:</strong> Your account is awaiting administrator approval. You will receive an email once approved.', 'vigilante' )
1359 1396 );
@@ -1402,16 +1439,131 @@
1402 1439 <?php
1403 1440 }
1404 1441
1405 1442 /**
1443 + * A user meta key that belongs to one site, even on a network
1444 + *
1445 + * Registration approval is a per-site setting, but user meta is network
1446 + * wide, so a single global key made the pending queue shared: an
1447 + * administrator of one site saw, approved and rejected accounts waiting on
1448 + * another, and clearing the flag cleared it for the whole network. Reported
1449 + * by the wp.org automated review of 2.11.9.
1450 + *
1451 + * On a network the key carries the blog prefix, the way core does with
1452 + * capabilities (wp_2_capabilities), so each site keeps its own queue. On a
1453 + * single site the key is returned unchanged, so nothing has to be migrated
1454 + * there and the stored data of every existing install keeps working.
1455 + *
1456 + * @since 2.11.10
1457 + *
1458 + * Note the default is null and not 0: wpdb::get_blog_prefix() reads null as
1459 + * "the current blog", and 0 as the main site, so passing 0 here gave every
1460 + * subsite the key of the main site and kept the queue shared. Caught by
1461 + * matriz-red-repaso-21110.sh before this shipped.
1462 + *
1463 + * @param string $key Base meta key.
1464 + * @param int|null $blog_id Blog to build it for. Current blog when null.
1465 + * @return string
1466 + */
1467 + public static function site_user_meta_key( $key, $blog_id = null ) {
1468 + global $wpdb;
1469 +
1470 + if ( ! is_multisite() ) {
1471 + return $key;
1472 + }
1473 +
1474 + return $wpdb->get_blog_prefix( $blog_id ) . $key;
1475 + }
1476 +
1477 + /**
1478 + * Whether this account is waiting for approval on ANY site of the network
1479 + *
1480 + * The queue is per site and stays per site, because approving somebody is a
1481 + * decision of the site they signed up to. Blocking them is a different
1482 + * question with a different answer, and giving it the same one was a hole:
1483 + * the session cookie WordPress issues is valid on every host of the network
1484 + * (COOKIE_DOMAIN and COOKIEPATH, wp-includes/ms-default-constants.php:58-59
1485 + * and :84-88), so an account held back on demo1 logged in through the main
1486 + * site, where it carried no flag, and walked straight back into demo1 with
1487 + * that cookie. Reproduced over HTTP by the second cross review of 2.11.10.
1488 + * It is the same reasoning that two_factor_required_for() already applies:
1489 + * network-wide cookie, network-wide enforcement.
1490 + *
1491 + * Read from the account's own meta in one pass rather than by asking site by
1492 + * site, so the cost does not grow with the network. The legacy key with no
1493 + * prefix is included because the migration that moves it runs on the first
1494 + * admin page load and until then a waiting account has to keep being
1495 + * blocked; reading both fails closed.
1496 + *
1497 + * @since 2.11.10
1498 + *
1499 + * @param int $user_id User ID.
1500 + * @return bool
1501 + */
1502 + public static function is_pending_anywhere( $user_id ) {
1503 + global $wpdb;
1504 +
1505 + if ( get_user_meta( $user_id, 'vigilante_pending_approval', true ) ) {
1506 + return true;
1507 + }
1508 +
1509 + if ( ! is_multisite() ) {
1510 + return false;
1511 + }
1512 +
1513 + $all = get_user_meta( $user_id );
1514 +
1515 + if ( ! is_array( $all ) ) {
1516 + return false;
1517 + }
1518 +
1519 + $pattern = '/^' . preg_quote( $wpdb->base_prefix, '/' ) . '(\d+_)?vigilante_pending_approval$/';
1520 +
1521 + foreach ( $all as $key => $values ) {
1522 + if ( ! preg_match( $pattern, $key, $m ) ) {
1523 + continue;
1524 + }
1525 +
1526 + /*
1527 + * A mark left behind by a site that no longer exists asks nobody for
1528 + * anything: deleting a subsite does not touch this plugin's user meta,
1529 + * so the account stayed blocked on the whole network with no queue
1530 + * anywhere to clear it from, in a plugin whose users have no WP-CLI.
1531 + * Found by the third cross review of 2.11.10. get_site() is cached, so
1532 + * this costs nothing in the usual case of no leftovers.
1533 + */
1534 + if ( ! empty( $m[1] ) && ! get_site( (int) rtrim( $m[1], '_' ) ) ) {
1535 + continue;
1536 + }
1537 +
1538 + foreach ( (array) $values as $value ) {
1539 + if ( ! empty( $value ) ) {
1540 + return true;
1541 + }
1542 + }
1543 + }
1544 +
1545 + return false;
1546 + }
1547 +
1548 + /**
1406 1549 * Get pending users
1407 1550 *
1551 + * The meta key is what scopes this list to the current site, so on a network
1552 + * the query deliberately does not add the site's own membership filter on
1553 + * top. Core's WP_User_Query turns the default into "{$prefix}capabilities
1554 + * EXISTS" (wp-includes/class-wp-user-query.php:598-604), and an account that
1555 + * is waiting for approval can perfectly well have no role yet: it then held
1556 + * this site's flag, was blocked from logging in, and appeared in no queue at
1557 + * all, so nobody could ever approve or reject it. Found by the second cross
1558 + * review of 2.11.10.
1559 + *
1408 1560 * @return array Array of pending user objects.
1409 1561 */
1410 1562 public function get_pending_users() {
1411 1563 // phpcs:disable WordPress.DB.SlowDBQuery.slow_db_query_meta_key, WordPress.DB.SlowDBQuery.slow_db_query_meta_value -- Limited results in admin context.
1412 1564 $args = array(
1413 - 'meta_key' => 'vigilante_pending_approval',
1565 + 'meta_key' => self::site_user_meta_key( 'vigilante_pending_approval' ),
1414 1566 'meta_value' => '1',
1415 1567 'orderby' => 'registered',
1416 1568 'order' => 'DESC',
1417 1569 );
@@ -1416,8 +1568,12 @@
1416 1568 'order' => 'DESC',
1417 1569 );
1418 1570 // phpcs:enable WordPress.DB.SlowDBQuery.slow_db_query_meta_key, WordPress.DB.SlowDBQuery.slow_db_query_meta_value
1419 1571
1572 + if ( is_multisite() ) {
1573 + $args['blog_id'] = 0;
1574 + }
1575 +
1420 1576 return get_users( $args );
1421 1577 }
1422 1578
1423 1579 /**
@@ -1429,9 +1585,11 @@
1429 1585 */
1430 1586 public function approve_user( $user_id, $approved_by = 0 ) {
1431 1587 // Same reasoning as reject_user(): approving an account that never asked
1432 1588 // for approval is a no-op that reports success and writes misleading meta.
1433 - if ( ! get_user_meta( $user_id, 'vigilante_pending_approval', true ) ) {
1589 + // Only this site's flag counts, so approving never clears the queue of
1590 + // another site of the network (see site_user_meta_key()).
1591 + if ( ! get_user_meta( $user_id, self::site_user_meta_key( 'vigilante_pending_approval' ), true ) ) {
1434 1592 return false;
1435 1593 }
1436 1594
1437 1595 $user = get_userdata( $user_id );
@@ -1438,12 +1596,15 @@
1438 1596 if ( ! $user ) {
1439 1597 return false;
1440 1598 }
1441 1599
1442 - delete_user_meta( $user_id, 'vigilante_pending_approval' );
1443 - delete_user_meta( $user_id, 'vigilante_pending_since' );
1444 - update_user_meta( $user_id, 'vigilante_approved_by', $approved_by );
1445 - update_user_meta( $user_id, 'vigilante_approved_date', time() );
1600 + delete_user_meta( $user_id, self::site_user_meta_key( 'vigilante_pending_approval' ) );
1601 + delete_user_meta( $user_id, self::site_user_meta_key( 'vigilante_pending_since' ) );
1602 + // Por sitio como las dos de arriba: quien aprueba y cuando es un hecho de
1603 + // la cola de ESTE sitio, y dejarlas globales hacia que una aprobacion
1604 + // pisara el registro de otro (cierra B4 de la revision cruzada).
1605 + update_user_meta( $user_id, self::site_user_meta_key( 'vigilante_approved_by' ), $approved_by );
1606 + update_user_meta( $user_id, self::site_user_meta_key( 'vigilante_approved_date' ), time() );
1446 1607
1447 1608 // Log
1448 1609 if ( $this->activity_log ) {
1449 1610 $admin = $approved_by ? get_userdata( $approved_by ) : null;
@@ -1484,9 +1645,9 @@
1484 1645 // Only an account actually waiting for approval may be rejected. Without
1485 1646 // this the handler deletes any user id it is given, and wp_delete_user()
1486 1647 // with no reassignment takes their posts with them, skipping the dialog
1487 1648 // core always shows. Deleting a member is the Users screen's job.
1488 - if ( ! get_user_meta( $user_id, 'vigilante_pending_approval', true ) ) {
1649 + if ( ! get_user_meta( $user_id, self::site_user_meta_key( 'vigilante_pending_approval' ), true ) ) {
1489 1650 return false;
1490 1651 }
1491 1652
1492 1653 // Log before deletion
@@ -1513,8 +1674,21 @@
1513 1674
1514 1675 // Send rejection email before deleting
1515 1676 $this->send_rejection_email( $user, $reason );
1516 1677
1678 + /*
1679 + * The mark goes first, because on a network the account may well survive
1680 + * the deletion: wp_delete_user() only calls remove_user_from_blog() there
1681 + * (wp-admin/includes/user.php:440-442), which clears the role and nothing
1682 + * of this plugin's own meta. Leaving it behind made Reject a loop with no
1683 + * way out: the account stayed blocked on every site of the network, the
1684 + * row never left the queue (which since 2.11.10 no longer hides accounts
1685 + * without a role), and pressing Reject again sent the rejection email once
1686 + * more and reported success. Found by the third cross review of 2.11.10.
1687 + */
1688 + delete_user_meta( $user_id, self::site_user_meta_key( 'vigilante_pending_approval' ) );
1689 + delete_user_meta( $user_id, self::site_user_meta_key( 'vigilante_pending_since' ) );
1690 +
1517 1691 // Delete user
1518 1692 require_once ABSPATH . 'wp-admin/includes/user.php';
1519 1693 return wp_delete_user( $user_id );
1520 1694 }
@@ -1896,8 +2070,31 @@
1896 2070 return max( 0, $count );
1897 2071 }
1898 2072
1899 2073 /**
2074 + * Whether the session store this limit would act on belongs to a whole network
2075 + *
2076 + * WP_Session_Tokens keeps session_tokens in the usermeta table, which is
2077 + * network wide, while this limit is configured per site. So on a network a
2078 + * site administrator setting a low limit would count, and with close_oldest
2079 + * close, the sessions the same user opened on other sites, including an
2080 + * administrator session elsewhere; and block_new would refuse a login over
2081 + * sessions that have nothing to do with this site. Reported by the wp.org
2082 + * automated review of 2.11.9, on the close_oldest half.
2083 + *
2084 + * Until the network-wide policy of 3.1.0, the limit simply does not apply on
2085 + * a network, and the settings screen says so. On a single site nothing
2086 + * changes: there the session store and the setting cover the same thing.
2087 + *
2088 + * @since 2.11.10
2089 + *
2090 + * @return bool
2091 + */
2092 + public static function session_limit_is_network_wide() {
2093 + return is_multisite();
2094 + }
2095 +
2096 + /**
1900 2097 * Check session limit before login completes (for block_new behavior)
1901 2098 *
1902 2099 * @param WP_User $user User object.
1903 2100 * @param string $password Password.
@@ -1907,8 +2104,12 @@
1907 2104 if ( is_wp_error( $user ) ) {
1908 2105 return $user;
1909 2106 }
1910 2107
2108 + if ( self::session_limit_is_network_wide() ) {
2109 + return $user;
2110 + }
2111 +
1911 2112 $settings = $this->options['session_limits'] ?? array();
1912 2113 $max_sessions = absint( $settings['max_sessions'] ?? 3 );
1913 2114 $exclude_admins = ! empty( $settings['exclude_admins'] );
1914 2115
@@ -1938,11 +2139,8 @@
1938 2139 'warning'
1939 2140 );
1940 2141 }
1941 2142
1942 - // Mark this as a controlled rejection (not a brute force attempt)
1943 - add_filter( 'vigilante_skip_failed_login_count', '__return_true' );
1944 -
1945 2143 return new WP_Error(
1946 2144 'session_limit_exceeded',
1947 2145 sprintf(
1948 2146 /* translators: %d: Maximum sessions allowed */
@@ -1961,8 +2159,12 @@
1961 2159 * @param string $user_login Username.
1962 2160 * @param WP_User $user User object.
1963 2161 */
1964 2162 public function enforce_session_limit( $user_login, $user ) {
2163 + if ( self::session_limit_is_network_wide() ) {
2164 + return;
2165 + }
2166 +
1965 2167 $settings = $this->options['session_limits'] ?? array();
1966 2168 $max_sessions = absint( $settings['max_sessions'] ?? 3 );
1967 2169 $behavior = $settings['behavior'] ?? 'block_new';
1968 2170 $exclude_admins = ! empty( $settings['exclude_admins'] );
@@ -1981,27 +2183,69 @@
1981 2183 return;
1982 2184 }
1983 2185
1984 2186 if ( 'close_oldest' === $behavior ) {
1985 - // Sort by login time and destroy oldest
1986 - uasort( $all_sessions, function( $a, $b ) {
1987 - return ( $a['login'] ?? 0 ) - ( $b['login'] ?? 0 );
2187 + /*
2188 + * Remove the oldest sessions by editing the session store directly.
2189 + *
2190 + * WP_Session_Tokens::get_all() returns array_values( get_sessions() ),
2191 + * so its keys are 0, 1, 2, not tokens, and destroy() expects a raw
2192 + * token, which is not stored anywhere and cannot be recovered for a
2193 + * session other than the current one. Until 2.11.9 the loop passed
2194 + * those numeric keys to destroy(), which hashed them, matched nothing
2195 + * and closed no session while still counting and logging success, so
2196 + * the cap did nothing under close_oldest. Reported by the wp.org
2197 + * automated review of 2.11.8.
2198 + *
2199 + * The store keeps the sessions as the user meta 'session_tokens',
2200 + * keyed by the verifier hash( 'sha256', token ), which is the value
2201 + * is_current_session() already compares against. So the oldest are
2202 + * removed from that map, keeping the current session whatever its age.
2203 + * On a network the meta is global (one finding of the multisite audit,
2204 + * to be reworked in 3.1.0); here the fix is only to make the removal
2205 + * actually happen.
2206 + */
2207 + $stored = get_user_meta( $user->ID, 'session_tokens', true );
2208 +
2209 + if ( ! is_array( $stored ) || empty( $stored ) ) {
2210 + return;
2211 + }
2212 +
2213 + $now = time();
2214 + $changed = false;
2215 +
2216 + // Expired sessions are dead weight and count for nothing; drop them first.
2217 + foreach ( $stored as $verifier => $session ) {
2218 + if ( isset( $session['expiration'] ) && (int) $session['expiration'] < $now ) {
2219 + unset( $stored[ $verifier ] );
2220 + $changed = true;
2221 + }
2222 + }
2223 +
2224 + // Oldest first, keeping the current session whatever its login time.
2225 + uasort( $stored, function ( $a, $b ) {
2226 + return ( $a['login'] ?? 0 ) <=> ( $b['login'] ?? 0 );
1988 2227 } );
1989 2228
1990 - $sessions_to_remove = $session_count - $max_sessions;
1991 - $removed = 0;
2229 + $sessions_to_remove = count( $stored ) - $max_sessions;
2230 + $removed = 0;
1992 2231
1993 - foreach ( $all_sessions as $token_hash => $session ) {
2232 + foreach ( $stored as $verifier => $session ) {
1994 2233 if ( $removed >= $sessions_to_remove ) {
1995 2234 break;
1996 2235 }
1997 - // Don't remove current session
1998 - if ( ! $this->is_current_session( $token_hash ) ) {
1999 - $sessions->destroy( $token_hash );
2000 - $removed++;
2236 + if ( $this->is_current_session( $verifier ) ) {
2237 + continue;
2001 2238 }
2239 + unset( $stored[ $verifier ] );
2240 + $removed++;
2241 + $changed = true;
2002 2242 }
2003 2243
2244 + if ( $changed ) {
2245 + update_user_meta( $user->ID, 'session_tokens', $stored );
2246 + }
2247 +
2004 2248 // Log
2005 2249 if ( $this->activity_log && $removed > 0 ) {
2006 2250 $this->activity_log->log(
2007 2251 'user',
@@ -2051,9 +2295,15 @@
2051 2295
2052 2296 // Honor both affected_roles AND the per-user exclusion list, and
2053 2297 // clear stale flags if the user no longer matches the rules.
2054 2298 if ( ! $this->is_password_expiration_applicable( $user_id ) ) {
2055 - if ( get_user_meta( $user_id, 'vigilante_must_change_password', true ) ) {
2299 + // Only on a single site, for the same reason as in
2300 + // force_password_change_redirect(): on a network the flag belongs to
2301 + // the account, and this site's policy says nothing about the site
2302 + // that set it. The 2.11.8 fix only covered that method, and this
2303 + // notice cleared the flag anyway on the next admin page; found by
2304 + // the cross review of 2.11.8.
2305 + if ( ! is_multisite() && get_user_meta( $user_id, 'vigilante_must_change_password', true ) ) {
2056 2306 delete_user_meta( $user_id, 'vigilante_must_change_password' );
2057 2307 }
2058 2308 return;
2059 2309 }
@@ -2116,39 +2366,121 @@
2116 2366 }
2117 2367 }
2118 2368
2119 2369 /**
2120 - * Force redirect to password change page
2370 + * Whether this user must change an expired password before doing anything else
2371 + *
2372 + * The flag alone is not enough: it is re-checked against the current policy,
2373 + * because the admin may have taken the user's role out of affected_roles or
2374 + * added the user to the exclusion list after it was set, which would
2375 + * otherwise lock them in a redirect loop. A stale flag is cleared on a
2376 + * single site; on a network the meta is shared by every site and the policy
2377 + * checked is only this site's, so it is left alone and simply not enforced
2378 + * here (a network-wide rework is the 3.1.0 multisite item).
2379 + *
2380 + * @since 2.11.9
2381 + *
2382 + * @param int $user_id User ID.
2383 + * @return bool
2121 2384 */
2385 + private function must_change_password( $user_id ) {
2386 + if ( ! $user_id ) {
2387 + return false;
2388 + }
2389 +
2390 + $flagged = (bool) get_user_meta( $user_id, 'vigilante_must_change_password', true );
2391 +
2392 + if ( ! $this->is_password_expiration_applicable( $user_id ) ) {
2393 + if ( $flagged && ! is_multisite() ) {
2394 + delete_user_meta( $user_id, 'vigilante_must_change_password' );
2395 + }
2396 + return false;
2397 + }
2398 +
2399 + if ( $flagged ) {
2400 + return true;
2401 + }
2402 +
2403 + // The flag is set at interactive login (check_password_expiration on
2404 + // wp_login). A session that authenticates only through REST, XML-RPC or
2405 + // an application password never fires wp_login, so the flag can be
2406 + // absent while the password is in fact expired. Compute it on the fly
2407 + // too, so a non-interactive route is not a way around the block. The
2408 + // computation self-seeds the change date on first sight and never locks
2409 + // out a user who has no record yet (see is_password_expired()).
2410 + return $this->is_password_expired( $user_id );
2411 + }
2412 +
2413 + /**
2414 + * Force a user with an expired password to change it, on wp-admin and AJAX
2415 + *
2416 + * Until 2.11.9 this only redirected wp-admin pages and skipped AJAX, so an
2417 + * expired-password session kept working through admin-ajax, and the REST API
2418 + * and the front end were not covered at all. The wp.org automated review of
2419 + * 2.11.8 flagged it: setting a flag on login is not enforcement if the flag
2420 + * is only read by one redirect. It is now enforced on every entry point,
2421 + * here for wp-admin and AJAX and in the three methods below for REST, the
2422 + * front end and XML-RPC. The only thing an affected user can still do is
2423 + * change the password on profile.php or log out.
2424 + */
2122 2425 public function force_password_change_redirect() {
2123 - if ( ! is_user_logged_in() ) {
2426 + if ( ! is_user_logged_in() || ! $this->must_change_password( get_current_user_id() ) ) {
2124 2427 return;
2125 2428 }
2126 2429
2127 - // Don't redirect on AJAX or profile page
2430 + // AJAX: a redirect is useless, so the request is refused. Changing the
2431 + // password is a profile.php form POST, not AJAX, so nothing the user
2432 + // needs to fix this is blocked.
2128 2433 if ( wp_doing_ajax() ) {
2129 - return;
2434 + wp_send_json_error(
2435 + array( 'message' => __( 'Your password has expired. Change it in your profile before continuing.', 'vigilante' ) ),
2436 + 403
2437 + );
2130 2438 }
2131 2439
2440 + // profile.php is where the change happens; do not redirect it onto itself.
2132 2441 global $pagenow;
2133 2442 if ( 'profile.php' === $pagenow ) {
2134 2443 return;
2135 2444 }
2136 2445
2137 - $user_id = get_current_user_id();
2138 - $must_change = get_user_meta( $user_id, 'vigilante_must_change_password', true );
2446 + wp_safe_redirect( admin_url( 'profile.php#password' ) );
2447 + exit;
2448 + }
2139 2449
2140 - if ( ! $must_change ) {
2141 - return;
2450 + /**
2451 + * Refuse REST API requests from a user whose password has expired
2452 + *
2453 + * @since 2.11.9
2454 + *
2455 + * @param WP_Error|null|true $result Result of the earlier authentication checks.
2456 + * @return WP_Error|null|true
2457 + */
2458 + public function block_expired_password_rest( $result ) {
2459 + // Leave any decision another check already made, and do not act on
2460 + // logged-out requests to public endpoints.
2461 + if ( null !== $result && false !== $result ) {
2462 + return $result;
2142 2463 }
2143 2464
2144 - // Re-validate against current settings: the admin may have removed
2145 - // this user's role from affected_roles or added the user to the
2146 - // excluded list after the flag was set. Without this check the flag
2147 - // outlives the configuration change and locks the user in a redirect
2148 - // loop into profile.php.
2149 - if ( ! $this->is_password_expiration_applicable( $user_id ) ) {
2150 - delete_user_meta( $user_id, 'vigilante_must_change_password' );
2465 + if ( is_user_logged_in() && $this->must_change_password( get_current_user_id() ) ) {
2466 + return new WP_Error(
2467 + 'vigilante_password_expired',
2468 + __( 'Your password has expired. Change it in your profile before using the REST API.', 'vigilante' ),
2469 + array( 'status' => 403 )
2470 + );
2471 + }
2472 +
2473 + return $result;
2474 + }
2475 +
2476 + /**
2477 + * Send a user with an expired password to the change page from the front end
2478 + *
2479 + * @since 2.11.9
2480 + */
2481 + public function force_password_change_frontend() {
2482 + if ( is_admin() || ! is_user_logged_in() || ! $this->must_change_password( get_current_user_id() ) ) {
2151 2483 return;
2152 2484 }
2153 2485
2154 2486 wp_safe_redirect( admin_url( 'profile.php#password' ) );
@@ -2155,8 +2487,40 @@
2155 2487 exit;
2156 2488 }
2157 2489
2158 2490 /**
2491 + * Refuse XML-RPC calls from a user whose password has expired
2492 + *
2493 + * The last of the four non-wp-admin entry points. XML-RPC authenticates on
2494 + * every call with the account credentials (a password or an application
2495 + * password), so a session that never touches wp-admin could keep acting
2496 + * through xmlrpc.php while the password sits expired. Scoped to XML-RPC
2497 + * requests so an ordinary login, which the user needs to reach profile.php,
2498 + * is never blocked here. Runs late on authenticate, after core and the
2499 + * application-password handler have resolved the user.
2500 + *
2501 + * @since 2.11.9
2502 + *
2503 + * @param WP_User|WP_Error|null $user Result of the earlier authentication.
2504 + * @return WP_User|WP_Error|null
2505 + */
2506 + public function block_expired_password_xmlrpc( $user ) {
2507 + if ( ! ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) ) {
2508 + return $user;
2509 + }
2510 +
2511 + if ( $user instanceof WP_User && $this->must_change_password( $user->ID ) ) {
2512 + return new WP_Error(
2513 + 'vigilante_password_expired',
2514 + __( 'Your password has expired. Change it in your profile before using XML-RPC.', 'vigilante' ),
2515 + array( 'status' => 403 )
2516 + );
2517 + }
2518 +
2519 + return $user;
2520 + }
2521 +
2522 + /**
2159 2523 * Whether password expiration rules currently apply to a given user
2160 2524 *
2161 2525 * Used to detect stale flags after the admin changes affected_roles or
2162 2526 * the per-user exclusion list.
@@ -2520,8 +2884,21 @@
2520 2884 *
2521 2885 * @param int $user_id User ID.
2522 2886 */
2523 2887 public function send_verification_email( $user_id ) {
2888 + /*
2889 + * Never send an account that is already verified back to pending. The
2890 + * resend link below reaches this, and while the pending value was
2891 + * unreadable (see the note on the meta write) that was harmless; with
2892 + * the check working, resending for a verified account would lock its
2893 + * owner out of their own site.
2894 + */
2895 + if ( metadata_exists( 'user', $user_id, 'vigilante_email_verified' )
2896 + && get_user_meta( $user_id, 'vigilante_email_verified', true )
2897 + ) {
2898 + return;
2899 + }
2900 +
2524 2901 $user = get_userdata( $user_id );
2525 2902 if ( ! $user ) {
2526 2903 return;
2527 2904 }
@@ -2536,10 +2913,22 @@
2536 2913
2537 2914 // Store token
2538 2915 update_user_meta( $user_id, 'vigilante_verification_token', $token_hash );
2539 2916 update_user_meta( $user_id, 'vigilante_verification_expires', $expires );
2540 - update_user_meta( $user_id, 'vigilante_email_verified', false );
2541 2917
2918 + /*
2919 + * '0' and not false. update_user_meta() stores false as an empty string
2920 + * (maybe_serialize() returns it unchanged and wpdb writes it with %s), and
2921 + * an empty string is what get_user_meta() also returns when there is no
2922 + * row at all. So from the moment this feature existed until 2.11.10 the
2923 + * value written to mean "not verified yet" was read back as "this account
2924 + * predates the feature, let it in", and the branch that blocks the login
2925 + * was unreachable. Found by the file-by-file review of 2.11.10. '0' is
2926 + * falsy in PHP and survives the round trip, and the readers below tell an
2927 + * absent row from a stored one with metadata_exists().
2928 + */
2929 + update_user_meta( $user_id, 'vigilante_email_verified', '0' );
2930 +
2542 2931 // Build verification URL
2543 2932 $verify_url = add_query_arg(
2544 2933 array(
2545 2934 'vigilante_verify' => '1',
@@ -2613,16 +3002,21 @@
2613 3002 if ( is_wp_error( $user ) ) {
2614 3003 return $user;
2615 3004 }
2616 3005
2617 - // Check if email is verified
2618 - $verified = get_user_meta( $user->ID, 'vigilante_email_verified', true );
2619 -
2620 - // If no meta exists, user was created before this feature - allow
2621 - if ( '' === $verified ) {
3006 + /*
3007 + * Only a row that does not exist means "created before this feature".
3008 + * An existing row holding an empty string is an account that older
3009 + * versions marked as pending, and it has to be blocked like any other:
3010 + * reading both the same way is what made this check let everyone in
3011 + * (see send_verification_email()).
3012 + */
3013 + if ( ! metadata_exists( 'user', $user->ID, 'vigilante_email_verified' ) ) {
2622 3014 return $user;
2623 3015 }
2624 3016
3017 + $verified = get_user_meta( $user->ID, 'vigilante_email_verified', true );
3018 +
2625 3019 if ( ! $verified ) {
2626 3020 $settings = $this->options['email_verification'] ?? array();
2627 3021 $allow_resend = ! empty( $settings['allow_resend'] );
2628 3022
@@ -2664,10 +3058,19 @@
2664 3058
2665 3059 // Verify nonce to prevent CSRF and user-ID probing.
2666 3060 if ( ! isset( $_GET['_vigilante_nonce'] ) ||
2667 3061 ! wp_verify_nonce( sanitize_text_field( wp_unslash( $_GET['_vigilante_nonce'] ) ), 'vigilante_resend_verification_' . $user_id ) ) {
2668 - wp_safe_redirect( add_query_arg( 'vigilante_message', 'invalid', wp_login_url() ) );
2669 - exit;
3062 + /*
3063 + * Nothing is redirected to the login page until the request
3064 + * has proved something, and a bad nonce proves nothing. It
3065 + * used to answer with a redirect to wp_login_url(), which
3066 + * under a custom login URL IS the secret address, so any
3067 + * visitor could read it out of the Location header of a
3068 + * request carrying garbage. Found by the third cross review
3069 + * of 2.11.10. Returning leaves the request to render the page
3070 + * it asked for, which tells nobody anything.
3071 + */
3072 + return;
2670 3073 }
2671 3074
2672 3075 // Rate limiting: allow 1 resend every 5 minutes per user to prevent email spam.
2673 3076 $transient_key = 'vigilante_resend_' . $user_id;
@@ -2688,28 +3091,30 @@
2688 3091 $user_id = isset( $_GET['user_id'] ) ? absint( $_GET['user_id'] ) : 0;
2689 3092 // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- token-based verification below.
2690 3093 $token = isset( $_GET['token'] ) ? sanitize_text_field( wp_unslash( $_GET['token'] ) ) : '';
2691 3094
3095 + // Same as the resend above: no proof, no redirect, so the Location
3096 + // header cannot be used to read the custom login URL.
2692 3097 if ( ! $user_id || ! $token ) {
2693 - wp_safe_redirect( add_query_arg( 'vigilante_message', 'invalid', wp_login_url() ) );
2694 - exit;
3098 + return;
2695 3099 }
2696 3100
2697 - $stored_hash = get_user_meta( $user_id, 'vigilante_verification_token', true );
2698 - $expires = get_user_meta( $user_id, 'vigilante_verification_expires', true );
3101 + $stored_hash = (string) get_user_meta( $user_id, 'vigilante_verification_token', true );
3102 + $expires = (int) get_user_meta( $user_id, 'vigilante_verification_expires', true );
2699 3103
2700 - // Check expiration
3104 + // The token first. Checking the expiry before it answered "expired" for
3105 + // any account with no verification pending and "invalid" for one waiting,
3106 + // so a wrong link revealed which user ids were waiting (2.11.8). Only the
3107 + // holder of the right token learns that it expired.
3108 + if ( '' === $stored_hash || ! hash_equals( $stored_hash, wp_hash( $token ) ) ) {
3109 + return;
3110 + }
3111 +
2701 3112 if ( time() > $expires ) {
2702 3113 wp_safe_redirect( add_query_arg( 'vigilante_message', 'expired', wp_login_url() ) );
2703 3114 exit;
2704 3115 }
2705 3116
2706 - // Verify token
2707 - if ( ! hash_equals( $stored_hash, wp_hash( $token ) ) ) {
2708 - wp_safe_redirect( add_query_arg( 'vigilante_message', 'invalid', wp_login_url() ) );
2709 - exit;
2710 - }
2711 -
2712 3117 // Mark as verified
2713 3118 update_user_meta( $user_id, 'vigilante_email_verified', true );
2714 3119 delete_user_meta( $user_id, 'vigilante_verification_token' );
2715 3120 delete_user_meta( $user_id, 'vigilante_verification_expires' );
@@ -2730,12 +3135,11 @@
2730 3135 'info'
2731 3136 );
2732 3137 }
2733 3138
2734 - // Check if user still needs approval
2735 - $is_pending = get_user_meta( $user_id, 'vigilante_pending_approval', true );
2736 -
2737 - if ( $is_pending ) {
3139 + // Anywhere on the network, so the message matches what will actually
3140 + // happen at the login: that is what blocks (see is_pending_anywhere()).
3141 + if ( self::is_pending_anywhere( $user_id ) ) {
2738 3142 // User verified but still pending approval
2739 3143 wp_safe_redirect(
2740 3144 add_query_arg(
2741 3145 array(
@@ -2796,14 +3200,16 @@
2796 3200 * @param int $user_id User ID.
2797 3201 * @return bool
2798 3202 */
2799 3203 public function is_email_verified( $user_id ) {
2800 - $verified = get_user_meta( $user_id, 'vigilante_email_verified', true );
2801 -
2802 - // If no meta exists, consider verified (old users)
2803 - if ( '' === $verified ) {
3204 + // Same reading as block_unverified_user_login(): only an absent row means
3205 + // the account predates the feature. A stored empty string is an account
3206 + // an older version left pending.
3207 + if ( ! metadata_exists( 'user', $user_id, 'vigilante_email_verified' ) ) {
2804 3208 return true;
2805 3209 }
3210 +
3211 + $verified = get_user_meta( $user_id, 'vigilante_email_verified', true );
2806 3212
2807 3213 return (bool) $verified;
2808 3214 }
2809 3215