Changeset 56852

Timestamp:

10/12/2023 02:28:05 PM (10 months ago)

Author:

davidbaumwald

Message:

Grouped backports to the 4.3 branch.

• Comments: Prevent users who can not see a post from seeing comments on it.
• Shortcodes: Restrict ajax handler for media shortcode.
• Prevent unintended behavior when certain objects are unserialized.

Merges [56835], [56836], and [56838] to the 4.1 branch.
Props xknown, jorbin, joehoyle, peterwilsoncc, ehtis, tykoted, antpb.

Location:

branches/4.3/src

Files:

• wp-admin/includes/ajax-actions.php (modified) (2 diffs)
• wp-admin/includes/class-wp-comments-list-table.php (modified) (1 diff)
• wp-admin/includes/class-wp-list-table.php (modified) (1 diff)
• wp-admin/includes/dashboard.php (modified) (1 diff)
• wp-includes/class-wp-theme.php (modified) (2 diffs)
• wp-includes/media.php (modified) (2 diffs)
• wp-includes/shortcodes.php (modified) (1 diff)

branches/4.3/src/wp-admin/includes/ajax-actions.php

@@ -2870 +2870 @@
     $shortcode = wp_unslash( $_POST['shortcode'] );
 
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     if ( ! empty( $_POST['post_ID'] ) ) {
         $post = get_post( (int) $_POST['post_ID'] );
@@ -2876 +2892 @@
     // the embed shortcode requires a post
     if ( ! $post || ! current_user_can( 'edit_post', $post->ID ) ) {
-        if ( 'embed' === $shortcode ) {
+        if (  ) {
             wp_send_json_error();
         }

branches/4.3/src/wp-admin/includes/class-wp-comments-list-table.php

@@ -446 +446 @@
         $this->user_can = current_user_can( 'edit_comment', $comment->comment_ID );
 
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         echo "<tr id='comment-$comment->comment_ID' class='$the_comment_class'>";
         $this->single_row_columns( $comment );

branches/4.3/src/wp-admin/includes/class-wp-list-table.php

@@ -624 +624 @@
         $pending_phrase = sprintf( _n( '%s pending comment', '%s pending comments', $pending_comments ), $pending_comments_number );
 
-        // No comments at all.
+        $post_object   = get_post( $post_id );
+        $edit_post_cap = $post_object ? 'edit_post' : 'edit_posts';
+        if (
+            current_user_can( $edit_post_cap, $post_id ) ||
+            (
+                empty( $post_object->post_password ) &&
+                current_user_can( 'read_post', $post_id )
+            )
+        ) {
+            // The user has access to the post and thus can see comments
+        } else {
+            return false;
+        }
+
         if ( ! $approved_comments && ! $pending_comments ) {
             printf( '<span aria-hidden="true">—</span><span class="screen-reader-text">%s</span>',

branches/4.3/src/wp-admin/includes/dashboard.php

@@ -822 +822 @@
 
         echo '<div id="the-comment-list" data-wp-lists="list:comment">';
-        foreach ( $comments as $comment )
-            _wp_dashboard_recent_comments_row( $comment );
+        foreach ( $comments as $comment ) {
+            $comment_post = get_post( $comment->comment_post_ID );
+            if (
+                current_user_can( 'edit_post', $comment->comment_post_ID ) ||
+                (
+                    empty( $comment_post->post_password ) &&
+                    current_user_can( 'read_post', $comment->comment_post_ID )
+                )
+            ) {
+                _wp_dashboard_recent_comments_row( $comment );
+            }
+        }
         echo '</div>';
 

branches/4.3/src/wp-includes/class-wp-theme.php

@@ -508 +508 @@
 
     /**
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      * Adds theme data to cache.
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@@ -1304 +1326 @@
         return strnatcasecmp( $a->display( 'Name', false, true ), $b->display( 'Name', false, true ) );
     }
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 }

branches/4.3/src/wp-includes/media.php

@@ -1029 +1029 @@
         }
     } elseif ( ! empty( $atts['exclude'] ) ) {
+
         $attachments = get_children( array( 'post_parent' => $id, 'exclude' => $atts['exclude'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
     } else {
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         $attachments = get_children( array( 'post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
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     }
 
@@ -1327 +1340 @@
     }
 
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     if ( empty( $attachments ) ) {
         return '';

branches/4.3/src/wp-includes/shortcodes.php

@@ -172 +172 @@
 
 /**
- * Search content for shortcodes and filter shortcodes through their hooks.
+ * Returns a list of registered shortcode names found in the given content.
+ *
+ * Example usage:
+ *
+ *     get_shortcode_tags_in_content( '[audio src="file.mp3"][/audio] [foo] [gallery ids="1,2,3"]' );
+ *     // array( 'audio', 'gallery' )
+ *
+ * @since 6.3.2
+ *
+ * @param string $content The content to check.
+ * @return string[] An array of registered shortcode names found in the content.
+ */
+function get_shortcode_tags_in_content( $content ) {
+    if ( false === strpos( $content, '[' ) ) {
+        return array();
+    }
+
+    preg_match_all( '/' . get_shortcode_regex() . '/', $content, $matches, PREG_SET_ORDER );
+    if ( empty( $matches ) ) {
+        return array();
+    }
+
+    $tags = array();
+    foreach ( $matches as $shortcode ) {
+        $tags[] = $shortcode[2];
+
+        if ( ! empty( $shortcode[5] ) ) {
+            $deep_tags = get_shortcode_tags_in_content( $shortcode[5] );
+            if ( ! empty( $deep_tags ) ) {
+                $tags = array_merge( $tags, $deep_tags );
+            }
+        }
+    }
+
+    return $tags;
+}
+
+/**
+ * Searches content for shortcodes and filter shortcodes through their hooks.
  *
  * If there are no shortcode tags defined, then the content will be returned