Changeset 54551

Timestamp:

10/17/2022 05:49:25 PM (4 years ago)

Author:

SergeyBiryukov

Message:

Grouped backports to the 4.0 branch.

• Posts, Post types: Apply KSES to post-by-email content,
• General: Validate host on "Are you sure?" screen,
• Posts, Post types: Remove emails from post-by-email logs,
• Pings/trackbacks: Apply KSES to all trackbacks,
• Comments: Apply kses when editing comments,
• Mail: Reset PHPMailer properties between use,
• Widgets: Escape RSS error messages for display.

Merges [54521], [54522], [54523], [54525], [54527], [54529], [54541] to the 4.0 branch.
Props voldemortensen, johnbillion, paulkevan, peterwilsoncc, xknown, dd32, audrasjb, martinkrcho, davidbaumwald, tykoted, matveb, talldanwp.

Location:

branches/4.0

Files:

• . (modified) (1 prop)
• src/wp-includes/comment.php (modified) (2 diffs)
• src/wp-includes/default-widgets.php (modified) (2 diffs)
• src/wp-includes/functions.php (modified) (1 diff)
• src/wp-includes/pluggable.php (modified) (1 diff)
• src/wp-mail.php (modified) (2 diffs)
• src/wp-trackback.php (modified) (1 diff)

branches/4.0/src/wp-includes/comment.php

@@ -1917 +1917 @@
                 return 0;
         }
+
+        $filter_comment = false;
+        if ( ! has_filter( 'pre_comment_content', 'wp_filter_kses' ) ) {
+                $filter_comment = ! user_can( isset( $comment['user_id'] ) ? $comment['user_id'] : 0, 'unfiltered_html' );
+        }
+
+        if ( $filter_comment ) {
+                add_filter( 'pre_comment_content', 'wp_filter_kses' );
+        }
+
         // Escape data pulled from DB.
         $comment = wp_slash($comment);
@@ -1926 +1936 @@
 
         $commentarr = wp_filter_comment( $commentarr );
+
+        if ( $filter_comment ) {
+                remove_filter( 'pre_comment_content', 'wp_filter_kses' );
+        }
 
         // Now extract the merged array.

branches/4.0/src/wp-includes/default-widgets.php

@@ -1019 +1019 @@
         if ( is_wp_error($rss) ) {
                 if ( is_admin() || current_user_can('manage_options') )
-                        echo '<p>' . sprintf( __('<strong>RSS Error</strong>: %s'), $rss->get_error_message() ) . '</p>';
+                        echo '<p>' . sprintf( __('<strong>RSS Error</strong>: %s'), esc_html( $rss->get_error_message() ) ) . '</p>';
                 return;
         }
@@ -1129 +1129 @@
 
         if ( ! empty( $args['error'] ) ) {
-                echo '<p class="widget-error"><strong>' . sprintf( __( 'RSS Error: %s' ), $args['error'] ) . '</strong></p>';
+                echo '<p class="widget-error"><strong>' . sprintf( __( 'RSS Error: %s' ), esc_html( $args['error'] ) ) . '</strong></p>';
         }
 

branches/4.0/src/wp-includes/functions.php

@@ -2437 +2437 @@
         } else {
                 $html = __( 'Are you sure you want to do this?' );
-                if ( wp_get_referer() )
-                        $html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>";
+                if ( wp_get_referer() ) {
+                        $wp_http_referer = remove_query_arg( 'updated', wp_get_referer() );
+                        $wp_http_referer = wp_validate_redirect( esc_url_raw( $wp_http_referer ) );
+                        $html           .= '</p><p>';
+                        $html           .= sprintf(
+                                '<a href="%s">%s</a>',
+                                esc_url( $wp_http_referer ),
+                                __( 'Please try again.' )
+                        );
+                }
         }
 

branches/4.0/src/wp-includes/pluggable.php

@@ -351 +351 @@
         $phpmailer->ClearCustomHeaders();
         $phpmailer->ClearReplyTos();
+        $phpmailer->Body    = '';
+        $phpmailer->AltBody = '';
 
         // From email and name

branches/4.0/src/wp-mail.php

@@ -60 +60 @@
         wp_die( __('There doesn’t seem to be any new mail.') );
 }
+
+// Always run as an unauthenticated user.
+wp_set_current_user( 0 );
 
 for ( $i = 1; $i <= $count; $i++ ) {
@@ -126 +129 @@
                                 $author = sanitize_email($author);
                                 if ( is_email($author) ) {
-                                        echo '<p>' . sprintf(__('Author is %s'), $author) . '</p>';
                                         $userdata = get_user_by('email', $author);
                                         if ( ! empty( $userdata ) ) {

branches/4.0/src/wp-trackback.php

@@ -13 +13 @@
         wp( array( 'tb' => '1' ) );
 }
+
+// Always run as an unauthenticated user.
+wp_set_current_user( 0 );
 
 /**