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-rw-r--r--system/core/Security.php16
1 files changed, 10 insertions, 6 deletions
diff --git a/system/core/Security.php b/system/core/Security.php
index cbff38b30..93e6a3ba5 100644
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -147,6 +147,9 @@ class CI_Security {
'(document|(document\.)?window)\.(location|on\w*)',
'expression\s*(\(|&\#40;)', // CSS and IE
'vbscript\s*:', // IE, surprise!
+ 'wscript\s*:', // IE
+ 'jcript\s*:', // IE
+ 'vbs\s*:', // IE
'Redirect\s+30\d',
"([\"'])?data\s*:[^\\1]*?base64[^\\1]*?,[^\\1]*?\\1?"
);
@@ -415,8 +418,9 @@ class CI_Security {
* These words are compacted back to their correct state.
*/
$words = array(
- 'javascript', 'expression', 'vbscript', 'script', 'base64',
- 'applet', 'alert', 'document', 'write', 'cookie', 'window'
+ 'javascript', 'expression', 'vbscript', 'jscript', 'wscript',
+ 'vbs', 'script', 'base64', 'applet', 'alert', 'document',
+ 'write', 'cookie', 'window', 'confirm', 'prompt'
);
foreach ($words as $word)
@@ -475,7 +479,7 @@ class CI_Security {
* So this: <blink>
* Becomes: &lt;blink&gt;
*/
- $naughty = 'alert|applet|audio|basefont|base|behavior|bgsound|blink|body|embed|expression|form|frameset|frame|head|html|ilayer|iframe|input|button|select|isindex|layer|link|meta|keygen|object|plaintext|style|script|textarea|title|math|video|svg|xml|xss';
+ $naughty = 'alert|prompt|confirm|applet|audio|basefont|base|behavior|bgsound|blink|body|embed|expression|form|frameset|frame|head|html|ilayer|iframe|input|button|select|isindex|layer|link|meta|keygen|object|plaintext|style|script|textarea|title|math|video|svg|xml|xss';
$str = preg_replace_callback('#<(/*\s*)('.$naughty.')([^><]*)([><]*)#is', array($this, '_sanitize_naughty_html'), $str);
/*
@@ -490,7 +494,7 @@ class CI_Security {
* For example: eval('some code')
* Becomes: eval&#40;'some code'&#41;
*/
- $str = preg_replace('#(alert|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)\((.*?)\)#si',
+ $str = preg_replace('#(alert|prompt|confirm|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)\((.*?)\)#si',
'\\1\\2&#40;\\3&#41;',
$str);
@@ -745,7 +749,7 @@ class CI_Security {
protected function _js_link_removal($match)
{
return str_replace($match[1],
- preg_replace('#href=.*?(?:alert\(|alert&\#40;|javascript:|livescript:|mocha:|charset=|window\.|document\.|\.cookie|<script|<xss|data\s*:)#si',
+ preg_replace('#href=.*?(?:(?:alert|prompt|confirm)(?:\(|&\#40;)|javascript:|livescript:|mocha:|charset=|window\.|document\.|\.cookie|<script|<xss|data\s*:)#si',
'',
$this->_filter_attributes(str_replace(array('<', '>'), '', $match[1]))
),
@@ -770,7 +774,7 @@ class CI_Security {
protected function _js_img_removal($match)
{
return str_replace($match[1],
- preg_replace('#src=.*?(?:alert\(|alert&\#40;|javascript:|livescript:|mocha:|charset=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si',
+ preg_replace('#src=.*?(?:(?:alert|prompt|confirm)(?:\(|&\#40;)|javascript:|livescript:|mocha:|charset=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si',
'',
$this->_filter_attributes(str_replace(array('<', '>'), '', $match[1]))
),