linux防止php 伪造本地文件解决方法
我们举例只讲linux的系统，但是防止方法在任何系统都是有效的，下面我们先来看看等操作
你可以这样使用
| 代码如下 | 复制代码 |
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http://www.xxx.com/index.php?page=../etc/passwd 获取更多数据: |
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像上面代码，如果你是
?page=$_GET的话这样就完了，分析原因，因为我们分页只有数字，那么我们这样操作
| 代码如下 | 复制代码 |
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?page=intval($_GET); |
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这样就无法把字符提交了，我们利用了intval函数进行了过滤，那么对于提交字符怎么处理呢。
在处理字符时我们利用php自带函数的函数 addslashes和htmlspecialchars进行过滤，
如
| 代码如下 | 复制代码 |
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$body = htmlspecialchars(isset($_GET[$str])?$_GET[$str]:''); |
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这样就基本过滤了各种安全注入，当然如果你服务器有漏洞在php上是解决不了的。
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Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
