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Improve/update escaping in default widgets: 

* wrap some variables in `esc_attr()` before echoing
* replace some `strip_tags()` calls with `sanitize_text_field()`
* call `esc_url()` when wrapping some URLs

Props welcher.
See #23012.

Built from https://develop.svn.wordpress.org/trunk@33814


git-svn-id: http://core.svn.wordpress.org/trunk@33782 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Scott Taylor 2015-08-30 05:38:21 +00:00
parent 42f915273d
commit b35b167cfc
2 changed files with 60 additions and 61 deletions
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99
wp-includes/default-widgets.php
View File

@ -290,7 +290,7 @@ class WP_Widget_Search extends WP_Widget {
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$new_instance = wp_parse_args((array) $new_instance, array( 'title' => ''));
$instance['title'] = strip_tags($new_instance['title']);
$instance['title'] = sanitize_text_field( $new_instance['title'] );
return $instance;
}
@ -402,7 +402,7 @@ class WP_Widget_Archives extends WP_Widget {
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$new_instance = wp_parse_args( (array) $new_instance, array( 'title' => '', 'count' => 0, 'dropdown' => '') );
$instance['title'] = strip_tags($new_instance['title']);
$instance['title'] = sanitize_text_field( $new_instance['title'] );
$instance['count'] = $new_instance['count'] ? 1 : 0;
$instance['dropdown'] = $new_instance['dropdown'] ? 1 : 0;
@ -414,15 +414,13 @@ class WP_Widget_Archives extends WP_Widget {
*/
public function form( $instance ) {
$instance = wp_parse_args( (array) $instance, array( 'title' => '', 'count' => 0, 'dropdown' => '') );
$title = strip_tags($instance['title']);
$count = $instance['count'] ? 'checked="checked"' : '';
$dropdown = $instance['dropdown'] ? 'checked="checked"' : '';
$title = sanitize_text_field( $instance['title'] );
?>
<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:'); ?></label> <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>" /></p>
<p>
<input class="checkbox" type="checkbox" <?php echo $dropdown; ?> id="<?php echo $this->get_field_id('dropdown'); ?>" name="<?php echo $this->get_field_name('dropdown'); ?>" /> <label for="<?php echo $this->get_field_id('dropdown'); ?>"><?php _e('Display as dropdown'); ?></label>
<input class="checkbox" type="checkbox" <?php checked( $instance['dropdown'] ); ?> id="<?php echo $this->get_field_id('dropdown'); ?>" name="<?php echo $this->get_field_name('dropdown'); ?>" /> <label for="<?php echo $this->get_field_id('dropdown'); ?>"><?php _e('Display as dropdown'); ?></label>
<br/>
<input class="checkbox" type="checkbox" <?php echo $count; ?> id="<?php echo $this->get_field_id('count'); ?>" name="<?php echo $this->get_field_name('count'); ?>" /> <label for="<?php echo $this->get_field_id('count'); ?>"><?php _e('Show post counts'); ?></label>
<input class="checkbox" type="checkbox" <?php checked( $instance['count'] ); ?> id="<?php echo $this->get_field_id('count'); ?>" name="<?php echo $this->get_field_name('count'); ?>" /> <label for="<?php echo $this->get_field_id('count'); ?>"><?php _e('Show post counts'); ?></label>
</p>
<?php
}
@ -458,8 +456,8 @@ class WP_Widget_Meta extends WP_Widget {
<ul>
<?php wp_register(); ?>
<li><?php wp_loginout(); ?></li>
<li><a href="<?php bloginfo('rss2_url'); ?>"><?php _e('Entries <abbr title="Really Simple Syndication">RSS</abbr>'); ?></a></li>
<li><a href="<?php bloginfo('comments_rss2_url'); ?>"><?php _e('Comments <abbr title="Really Simple Syndication">RSS</abbr>'); ?></a></li>
<li><a href="<?php echo esc_url( get_bloginfo( 'rss2_url' ) ); ?>"><?php _e('Entries <abbr title="Really Simple Syndication">RSS</abbr>'); ?></a></li>
<li><a href="<?php echo esc_url( get_bloginfo( 'comments_rss2_url' ) ); ?>"><?php _e('Comments <abbr title="Really Simple Syndication">RSS</abbr>'); ?></a></li>
<?php
/**
* Filter the "Powered by WordPress" text in the Meta widget.
@ -488,7 +486,7 @@ class WP_Widget_Meta extends WP_Widget {
*/
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
$instance['title'] = sanitize_text_field( $new_instance['title'] );
return $instance;
}
@ -498,7 +496,7 @@ class WP_Widget_Meta extends WP_Widget {
*/
public function form( $instance ) {
$instance = wp_parse_args( (array) $instance, array( 'title' => '' ) );
$title = strip_tags($instance['title']);
$title = sanitize_text_field( $instance['title'] );
?>
<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:'); ?></label> <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>" /></p>
<?php
@ -542,7 +540,7 @@ class WP_Widget_Calendar extends WP_Widget {
*/
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
$instance['title'] = sanitize_text_field( $new_instance['title'] );
return $instance;
}
@ -552,7 +550,7 @@ class WP_Widget_Calendar extends WP_Widget {
*/
public function form( $instance ) {
$instance = wp_parse_args( (array) $instance, array( 'title' => '' ) );
$title = strip_tags($instance['title']);
$title = sanitize_text_field( $instance['title'] );
?>
<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:'); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>" /></p>
@ -606,11 +604,11 @@ class WP_Widget_Text extends WP_Widget {
*/
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
$instance['title'] = sanitize_text_field( $new_instance['title'] );
if ( current_user_can('unfiltered_html') )
$instance['text'] = $new_instance['text'];
else
$instance['text'] = stripslashes( wp_filter_post_kses( addslashes($new_instance['text']) ) ); // wp_filter_post_kses() expects slashed
$instance['text'] = wp_kses_post( stripslashes( $new_instance['text'] ) );
$instance['filter'] = ! empty( $new_instance['filter'] );
return $instance;
}
@ -620,16 +618,16 @@ class WP_Widget_Text extends WP_Widget {
*/
public function form( $instance ) {
$instance = wp_parse_args( (array) $instance, array( 'title' => '', 'text' => '' ) );
$title = strip_tags($instance['title']);
$text = esc_textarea($instance['text']);
$filter = isset( $instance['filter'] ) ? $instance['filter'] : 0;
$title = sanitize_text_field( $instance['title'] );
?>
<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:'); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>" /></p>
<p><label for="<?php echo $this->get_field_id( 'text' ); ?>"><?php _e( 'Content:' ); ?></label>
<textarea class="widefat" rows="16" cols="20" id="<?php echo $this->get_field_id('text'); ?>" name="<?php echo $this->get_field_name('text'); ?>"><?php echo $text; ?></textarea></p>
<textarea class="widefat" rows="16" cols="20" id="<?php echo $this->get_field_id('text'); ?>" name="<?php echo $this->get_field_name('text'); ?>"><?php echo esc_textarea( $instance['text'] ); ?></textarea></p>
<p><input id="<?php echo $this->get_field_id('filter'); ?>" name="<?php echo $this->get_field_name('filter'); ?>" type="checkbox" <?php checked(isset($instance['filter']) ? $instance['filter'] : 0); ?> />&nbsp;<label for="<?php echo $this->get_field_id('filter'); ?>"><?php _e('Automatically add paragraphs'); ?></label></p>
<p><input id="<?php echo $this->get_field_id('filter'); ?>" name="<?php echo $this->get_field_name('filter'); ?>" type="checkbox" <?php checked( $filter ); ?> />&nbsp;<label for="<?php echo $this->get_field_id('filter'); ?>"><?php _e('Automatically add paragraphs'); ?></label></p>
<?php
}
}
@ -738,7 +736,7 @@ class WP_Widget_Categories extends WP_Widget {
*/
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
$instance['title'] = sanitize_text_field( $new_instance['title'] );
$instance['count'] = !empty($new_instance['count']) ? 1 : 0;
$instance['hierarchical'] = !empty($new_instance['hierarchical']) ? 1 : 0;
$instance['dropdown'] = !empty($new_instance['dropdown']) ? 1 : 0;
@ -752,13 +750,13 @@ class WP_Widget_Categories extends WP_Widget {
public function form( $instance ) {
//Defaults
$instance = wp_parse_args( (array) $instance, array( 'title' => '') );
$title = esc_attr( $instance['title'] );
$title = sanitize_text_field( $instance['title'] );
$count = isset($instance['count']) ? (bool) $instance['count'] :false;
$hierarchical = isset( $instance['hierarchical'] ) ? (bool) $instance['hierarchical'] : false;
$dropdown = isset( $instance['dropdown'] ) ? (bool) $instance['dropdown'] : false;
?>
<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e( 'Title:' ); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo $title; ?>" /></p>
<input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" /></p>
<p><input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id('dropdown'); ?>" name="<?php echo $this->get_field_name('dropdown'); ?>"<?php checked( $dropdown ); ?> />
<label for="<?php echo $this->get_field_id('dropdown'); ?>"><?php _e( 'Display as dropdown' ); ?></label><br />
@ -879,7 +877,7 @@ class WP_Widget_Recent_Posts extends WP_Widget {
*/
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
$instance['title'] = santize_text_field( $new_instance['title'] );
$instance['number'] = (int) $new_instance['number'];
$instance['show_date'] = isset( $new_instance['show_date'] ) ? (bool) $new_instance['show_date'] : false;
$this->flush_widget_cache();
@ -1056,7 +1054,7 @@ class WP_Widget_Recent_Comments extends WP_Widget {
*/
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
$instance['title'] = sanitize_text_field( $new_instance['title'] );
$instance['number'] = absint( $new_instance['number'] );
$this->flush_widget_cache();
@ -1071,11 +1069,11 @@ class WP_Widget_Recent_Comments extends WP_Widget {
* @param array $instance
*/
public function form( $instance ) {
$title = isset( $instance['title'] ) ? esc_attr( $instance['title'] ) : '';
$title = isset( $instance['title'] ) ? $instance['title'] : '';
$number = isset( $instance['number'] ) ? absint( $instance['number'] ) : 5;
?>
<p><label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo $title; ?>" /></p>
<input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" /></p>
<p><label for="<?php echo $this->get_field_id( 'number' ); ?>"><?php _e( 'Number of comments to show:' ); ?></label>
<input id="<?php echo $this->get_field_id( 'number' ); ?>" name="<?php echo $this->get_field_name( 'number' ); ?>" type="text" value="<?php echo $number; ?>" size="3" /></p>
@ -1123,8 +1121,8 @@ class WP_Widget_RSS extends WP_Widget {
if ( ! is_wp_error($rss) ) {
$desc = esc_attr(strip_tags(@html_entity_decode($rss->get_description(), ENT_QUOTES, get_option('blog_charset'))));
if ( empty($title) )
$title = esc_html(strip_tags($rss->get_title()));
$link = esc_url(strip_tags($rss->get_permalink()));
$title = strip_tags( $rss->get_title() );
$link = strip_tags( $rss->get_permalink() );
while ( stristr($link, 'http') != $link )
$link = substr($link, 1);
}
@ -1135,10 +1133,10 @@ class WP_Widget_RSS extends WP_Widget {
/** This filter is documented in wp-includes/default-widgets.php */
$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
$url = esc_url(strip_tags($url));
$url = strip_tags( $url );
$icon = includes_url( 'images/rss.png' );
if ( $title )
$title = "<a class='rsswidget' href='$url'><img style='border:0' width='14' height='14' src='$icon' alt='RSS' /></a> <a class='rsswidget' href='$link'>$title</a>";
$title = '<a class="rsswidget" href="' . esc_url( $url ) . '"><img style="border:0" width="14" height="14" src="' . esc_url( $icon ) . '" alt="RSS" /></a> <a class="rsswidget" href="' . esc_url( $link ) . '">"'. esc_html( $title ) .'"</a>';
echo $args['before_widget'];
if ( $title ) {
@ -1291,9 +1289,8 @@ function wp_widget_rss_form( $args, $inputs = null ) {
$default_inputs = array( 'url' => true, 'title' => true, 'items' => true, 'show_summary' => true, 'show_author' => true, 'show_date' => true );
$inputs = wp_parse_args( $inputs, $default_inputs );
$args['number'] = esc_attr( $args['number'] );
$args['title'] = isset( $args['title'] ) ? esc_attr( $args['title'] ) : '';
$args['url'] = isset( $args['url'] ) ? esc_url( $args['url'] ) : '';
$args['title'] = isset( $args['title'] ) ? $args['title'] : '';
$args['url'] = isset( $args['url'] ) ? $args['url'] : '';
$args['items'] = isset( $args['items'] ) ? (int) $args['items'] : 0;
if ( $args['items'] < 1 || 20 < $args['items'] ) {
@ -1308,16 +1305,17 @@ function wp_widget_rss_form( $args, $inputs = null ) {
echo '<p class="widget-error"><strong>' . sprintf( __( 'RSS Error: %s' ), $args['error'] ) . '</strong></p>';
}
$esc_number = esc_attr( $args['number'] );
if ( $inputs['url'] ) :
?>
<p><label for="rss-url-<?php echo $args['number']; ?>"><?php _e( 'Enter the RSS feed URL here:' ); ?></label>
<input class="widefat" id="rss-url-<?php echo $args['number']; ?>" name="widget-rss[<?php echo $args['number']; ?>][url]" type="text" value="<?php echo $args['url']; ?>" /></p>
<p><label for="rss-url-<?php echo $esc_number; ?>"><?php _e( 'Enter the RSS feed URL here:' ); ?></label>
<input class="widefat" id="rss-url-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][url]" type="text" value="<?php echo esc_url( $args['url'] ); ?>" /></p>
<?php endif; if ( $inputs['title'] ) : ?>
<p><label for="rss-title-<?php echo $args['number']; ?>"><?php _e( 'Give the feed a title (optional):' ); ?></label>
<input class="widefat" id="rss-title-<?php echo $args['number']; ?>" name="widget-rss[<?php echo $args['number']; ?>][title]" type="text" value="<?php echo $args['title']; ?>" /></p>
<p><label for="rss-title-<?php echo $esc_number; ?>"><?php _e( 'Give the feed a title (optional):' ); ?></label>
<input class="widefat" id="rss-title-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][title]" type="text" value="<?php echo esc_attr( $args['title'] ); ?>" /></p>
<?php endif; if ( $inputs['items'] ) : ?>
<p><label for="rss-items-<?php echo $args['number']; ?>"><?php _e( 'How many items would you like to display?' ); ?></label>
<select id="rss-items-<?php echo $args['number']; ?>" name="widget-rss[<?php echo $args['number']; ?>][items]">
<p><label for="rss-items-<?php echo $esc_number; ?>"><?php _e( 'How many items would you like to display?' ); ?></label>
<select id="rss-items-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][items]">
<?php
for ( $i = 1; $i <= 20; ++$i ) {
echo "<option value='$i' " . selected( $args['items'], $i, false ) . ">$i</option>";
@ -1325,21 +1323,21 @@ function wp_widget_rss_form( $args, $inputs = null ) {
?>
</select></p>
<?php endif; if ( $inputs['show_summary'] ) : ?>
<p><input id="rss-show-summary-<?php echo $args['number']; ?>" name="widget-rss[<?php echo $args['number']; ?>][show_summary]" type="checkbox" value="1" <?php checked( $args['show_summary'] ); ?> />
<label for="rss-show-summary-<?php echo $args['number']; ?>"><?php _e( 'Display item content?' ); ?></label></p>
<p><input id="rss-show-summary-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_summary]" type="checkbox" value="1" <?php checked( $args['show_summary'] ); ?> />
<label for="rss-show-summary-<?php echo $esc_number; ?>"><?php _e( 'Display item content?' ); ?></label></p>
<?php endif; if ( $inputs['show_author'] ) : ?>
<p><input id="rss-show-author-<?php echo $args['number']; ?>" name="widget-rss[<?php echo $args['number']; ?>][show_author]" type="checkbox" value="1" <?php checked( $args['show_author'] ); ?> />
<label for="rss-show-author-<?php echo $args['number']; ?>"><?php _e( 'Display item author if available?' ); ?></label></p>
<p><input id="rss-show-author-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_author]" type="checkbox" value="1" <?php checked( $args['show_author'] ); ?> />
<label for="rss-show-author-<?php echo $esc_number; ?>"><?php _e( 'Display item author if available?' ); ?></label></p>
<?php endif; if ( $inputs['show_date'] ) : ?>
<p><input id="rss-show-date-<?php echo $args['number']; ?>" name="widget-rss[<?php echo $args['number']; ?>][show_date]" type="checkbox" value="1" <?php checked( $args['show_date'] ); ?>/>
<label for="rss-show-date-<?php echo $args['number']; ?>"><?php _e( 'Display item date?' ); ?></label></p>
<p><input id="rss-show-date-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_date]" type="checkbox" value="1" <?php checked( $args['show_date'] ); ?>/>
<label for="rss-show-date-<?php echo $esc_number; ?>"><?php _e( 'Display item date?' ); ?></label></p>
<?php
endif;
foreach ( array_keys($default_inputs) as $input ) :
if ( 'hidden' === $inputs[$input] ) :
$id = str_replace( '_', '-', $input );
?>
<input type="hidden" id="rss-<?php echo $id; ?>-<?php echo $args['number']; ?>" name="widget-rss[<?php echo $args['number']; ?>][<?php echo $input; ?>]" value="<?php echo $args[ $input ]; ?>" />
<input type="hidden" id="rss-<?php echo esc_attr( $id ); ?>-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][<?php echo esc_attr( $input ); ?>]" value="<?php echo esc_attr( $args[ $input ] ); ?>" />
<?php
endif;
endforeach;
@ -1453,7 +1451,7 @@ class WP_Widget_Tag_Cloud extends WP_Widget {
*/
public function update( $new_instance, $old_instance ) {
$instance = array();
$instance['title'] = strip_tags(stripslashes($new_instance['title']));
$instance['title'] = sanitize_text_field( stripslashes( $new_instance['title'] ) );
$instance['taxonomy'] = stripslashes($new_instance['taxonomy']);
return $instance;
}
@ -1463,9 +1461,10 @@ class WP_Widget_Tag_Cloud extends WP_Widget {
*/
public function form( $instance ) {
$current_taxonomy = $this->_get_current_taxonomy($instance);
$title = isset( $instance['title'] ) ? $instance['title'] : '';
?>
<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:') ?></label>
<input type="text" class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" value="<?php if (isset ( $instance['title'])) {echo esc_attr( $instance['title'] );} ?>" /></p>
<input type="text" class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" value="<?php echo esc_attr( $title ); ?>" /></p>
<p><label for="<?php echo $this->get_field_id('taxonomy'); ?>"><?php _e('Taxonomy:') ?></label>
<select class="widefat" id="<?php echo $this->get_field_id('taxonomy'); ?>" name="<?php echo $this->get_field_name('taxonomy'); ?>">
<?php foreach ( get_taxonomies() as $taxonomy ) :
@ -1473,7 +1472,7 @@ class WP_Widget_Tag_Cloud extends WP_Widget {
if ( !$tax->show_tagcloud || empty($tax->labels->name) )
continue;
?>
<option value="<?php echo esc_attr($taxonomy) ?>" <?php selected($taxonomy, $current_taxonomy) ?>><?php echo $tax->labels->name; ?></option>
<option value="<?php echo esc_attr($taxonomy) ?>" <?php selected($taxonomy, $current_taxonomy) ?>><?php echo esc_attr( $tax->labels->name ); ?></option>
<?php endforeach; ?>
</select></p><?php
}
@ -1553,7 +1552,7 @@ class WP_Widget_Tag_Cloud extends WP_Widget {
public function update( $new_instance, $old_instance ) {
$instance = array();
if ( ! empty( $new_instance['title'] ) ) {
$instance['title'] = strip_tags( stripslashes($new_instance['title']) );
$instance['title'] = sanitize_text_field( stripslashes( $new_instance['title'] ) );
}
if ( ! empty( $new_instance['nav_menu'] ) ) {
$instance['nav_menu'] = (int) $new_instance['nav_menu'];

2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.4-alpha-33813';
$wp_version = '4.4-alpha-33814';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.