From 46d2072e5ce0c13f3be2bd909d76eba37964740f Mon Sep 17 00:00:00 2001
From: Andrey Andreev <narf@devilix.net>
Date: Tue, 18 Mar 2014 23:08:59 +0200
Subject: More xss_clean() improvements

Issue described in https://github.com/EllisLab/CodeIgniter/issues/2667#issuecomment-37980030
+ a false positive
---
 system/core/Security.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'system')

diff --git a/system/core/Security.php b/system/core/Security.php
index a4d8c95ef..17ba3bcd8 100644
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -454,7 +454,7 @@ class CI_Security {
 
 			if (preg_match('/<a/i', $str))
 			{
-				$str = preg_replace_callback('#<a[^a-z0-9]+([^>]*?)(?:>|$)#si', array($this, '_js_link_removal'), $str);
+				$str = preg_replace_callback('#<a[^a-z0-9>]+([^>]*?)(?:>|$)#si', array($this, '_js_link_removal'), $str);
 			}
 
 			if (preg_match('/<img/i', $str))
@@ -581,7 +581,7 @@ class CI_Security {
 			$str_compare = $str;
 
 			$str = preg_replace('/(&#x0*[0-9a-f]{2,5})(?![0-9a-f;])/iS', '$1;', $str);
-			$str = preg_replace('/(&#\d{2,4})(?![0-9;])/S', '$1;', $str);
+			$str = preg_replace('/(&#0*\d{2,4})(?![0-9;])/S', '$1;', $str);
 			$str = html_entity_decode($str, ENT_COMPAT, $charset);
 		}
 		while ($str_compare !== $str);
-- 
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