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Better validation of the URL used in core HTTP requests. 

git-svn-id: https://develop.svn.wordpress.org/trunk@30443 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Andrew Nacin 2014-11-20 14:00:26 +00:00
parent 7e75ef00d2
commit 5db0ce11fb
1 changed files with 4 additions and 4 deletions
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8
src/wp-includes/http.php
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@ -444,8 +444,9 @@ function send_origin_headers() {
* @return mixed URL or false on failure.
*/
function wp_http_validate_url( $url ) {
$original_url = $url;
$url = wp_kses_bad_protocol( $url, array( 'http', 'https' ) );
if ( ! $url )
if ( ! $url || strtolower( $url ) !== strtolower( $original_url ) )
return false;
$parsed_url = @parse_url( $url );
@ -455,7 +456,7 @@ function wp_http_validate_url( $url ) {
if ( isset( $parsed_url['user'] ) || isset( $parsed_url['pass'] ) )
return false;
if ( false !== strpos( $parsed_url['host'], ':' ) )
if ( false !== strpbrk( $parsed_url['host'], ':#?[]' ) )
return false;
$parsed_home = @parse_url( get_option( 'home' ) );
@ -473,8 +474,7 @@ function wp_http_validate_url( $url ) {
}
if ( $ip ) {
$parts = array_map( 'intval', explode( '.', $ip ) );
if ( '127.0.0.1' === $ip
|| ( 10 === $parts[0] )
if ( 127 === $parts[0] || 10 === $parts[0]
|| ( 172 === $parts[0] && 16 <= $parts[1] && 31 >= $parts[1] )
|| ( 192 === $parts[0] && 168 === $parts[1] )
) {