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Hardening: Add escaping to the language attributes used on html elements.

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Merges [42259] to the 4.3 branch.


git-svn-id: https://develop.svn.wordpress.org/branches/4.3@42289 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
John Blackbourn 2017-11-29 16:29:35 +00:00
parent 9ecf1ec6ba
commit ef20417bf3
1 changed files with 7 additions and 5 deletions
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12
src/wp-includes/general-template.php
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@ -2627,12 +2627,14 @@ function get_language_attributes( $doctype = 'html' ) {
if ( function_exists( 'is_rtl' ) && is_rtl() )
$attributes[] = 'dir="rtl"';
if ( $lang = get_bloginfo('language') ) {
if ( get_option('html_type') == 'text/html' || $doctype == 'html' )
$attributes[] = "lang=\"$lang\"";
if ( $lang = get_bloginfo( 'language' ) ) {
if ( get_option( 'html_type' ) == 'text/html' || $doctype == 'html' ) {
$attributes[] = 'lang="' . esc_attr( $lang ) . '"';
}
if ( get_option('html_type') != 'text/html' || $doctype == 'xhtml' )
$attributes[] = "xml:lang=\"$lang\"";
if ( get_option( 'html_type' ) != 'text/html' || $doctype == 'xhtml' ) {
$attributes[] = 'xml:lang="' . esc_attr( $lang ) . '"';
}
}
$output = implode(' ', $attributes);