Exploit PHP 4.x/5.0 - 'Strip_Tags()' Function Bypass

[Exploiter]

EDB-ID

24280

Проверка EDB

1. Пройдено

Автор

STEFAN ESSER

Тип уязвимости

REMOTE

Платформа

PHP

CVE

cve-2004-0595

Дата публикации

2004-07-14

PHP 4.x/5.0 - 'Strip_Tags()' Function Bypass

source: https://www.securityfocus.com/bid/10724/info

It is reported that it is possible to bypass PHPs strip_tags() function.

It is reported that under certain circumstances, PHPs strip_tags() function will improperly leave malformed tags in place.

This vulnerability may mean that previously presumed-safe web applications could contain multiple cross-site scripting and HTML injection vulnerabilities when viewed by Microsoft Internet Explorer or Apple Safari web browsers.

It is reported that 'magic_quotes_gpc' must be off for PHP to be vulnerable to this issue. 

If a web application uses strip_tags() similar to:
$example = strip_tags($_REQUEST['user_input'], "<b><i><s>");

Then possible tags that may lead to exploitation might be:
<\0script> or <s\0cript>