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Ignore:
Timestamp:
09/19/2017 01:19:20 PM (3 years ago)
Author:
johnbillion
Message:

General: Add missing URL-encoding and add extra hardening to plugin and template names when they're displayed in the admin area.

Merges [41434] with changes to the 4.3 branch.

See #13377

Location:
branches/4.3
Files:
2 edited

Legend:

Unmodified
Added
Removed
  • branches/4.3

  • branches/4.3/src/wp-admin/plugins.php

    r40174 r41444  
    1818$action = $wp_list_table->current_action();
    1919
    20 $plugin = isset($_REQUEST['plugin']) ? $_REQUEST['plugin'] : '';
     20$plugin = isset($_REQUEST['plugin']) ? wp_unslash( $_REQUEST['plugin'] ) : '';
    2121$s = isset($_REQUEST['s']) ? urlencode($_REQUEST['s']) : '';
    2222
     
    4040            check_admin_referer('activate-plugin_' . $plugin);
    4141
    42             $result = activate_plugin($plugin, self_admin_url('plugins.php?error=true&plugin=' . $plugin), is_network_admin() );
     42            $result = activate_plugin($plugin, self_admin_url('plugins.php?error=true&plugin=' . urlencode( $plugin ) ), is_network_admin() );
    4343            if ( is_wp_error( $result ) ) {
    4444                if ( 'unexpected_output' == $result->get_error_code() ) {
    45                     $redirect = self_admin_url('plugins.php?error=true&charsout=' . strlen($result->get_error_data()) . '&plugin=' . $plugin . "&plugin_status=$status&paged=$page&s=$s");
     45                    $redirect = self_admin_url('plugins.php?error=true&charsout=' . strlen($result->get_error_data()) . '&plugin=' . urlencode( $plugin ) . "&plugin_status=$status&paged=$page&s=$s");
    4646                    wp_redirect(add_query_arg('_error_nonce', wp_create_nonce('plugin-activation-error_' . $plugin), $redirect));
    4747                    exit;
     
    7070            check_admin_referer('bulk-plugins');
    7171
    72             $plugins = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();
     72            $plugins = isset( $_POST['checked'] ) ? (array) wp_unslash( $_POST['checked'] ) : array();
    7373
    7474            if ( is_network_admin() ) {
     
    110110
    111111            if ( isset( $_GET['plugins'] ) )
    112                 $plugins = explode( ',', $_GET['plugins'] );
     112                $plugins = explode( ',', wp_unslash( $_GET['plugins'] ) );
    113113            elseif ( isset( $_POST['checked'] ) )
    114                 $plugins = (array) $_POST['checked'];
     114                $plugins = (array) wp_unslash( $_POST['checked'] );
    115115            else
    116116                $plugins = array();
     
    187187            check_admin_referer('bulk-plugins');
    188188
    189             $plugins = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();
     189            $plugins = isset( $_POST['checked'] ) ? (array) wp_unslash( $_POST['checked'] ) : array();
    190190            // Do not deactivate plugins which are already deactivated.
    191191            if ( is_network_admin() ) {
     
    220220
    221221            //$_POST = from the plugin form; $_GET = from the FTP details screen.
    222             $plugins = isset( $_REQUEST['checked'] ) ? (array) $_REQUEST['checked'] : array();
     222            $plugins = isset( $_REQUEST['checked'] ) ? (array) wp_unslash( $_REQUEST['checked'] ) : array();
    223223            if ( empty( $plugins ) ) {
    224224                wp_redirect( self_admin_url("plugins.php?plugin_status=$status&paged=$page&s=$s") );
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