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https://github.com/carlospolop/hacktricks
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96 lines
4.8 KiB
Markdown
96 lines
4.8 KiB
Markdown
# PHP SSRF
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<details>
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<summary><strong>Learn AWS hacking from zero to hero with</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>htARTE (HackTricks AWS Red Team Expert)</strong></a><strong>!</strong></summary>
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Other ways to support HackTricks:
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* If you want to see your **company advertised in HackTricks** or **download HackTricks in PDF** Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
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* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
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* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** 🐦 [**@carlospolopm**](https://twitter.com/carlospolopm)**.**
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* **Share your hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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<figure><img src="/.gitbook/assets/image (675).png" alt=""><figcaption></figcaption></figure>
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Find vulnerabilities that matter most so you can fix them faster. Intruder tracks your attack surface, runs proactive threat scans, finds issues across your whole tech stack, from APIs to web apps and cloud systems. [**Try it for free**](https://www.intruder.io/?utm\_source=referral\&utm\_campaign=hacktricks) today.
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{% embed url="https://www.intruder.io/?utm_campaign=hacktricks&utm_source=referral" %}
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***
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### SSRF PHP functions
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Some function such as _**file\_get\_contents(), fopen(), file(), md5\_file()** _ accept URLs as input that they will follow making **possible SSRF vulnerabilities** if the use can control the data:
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```php
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file_get_contents("http://127.0.0.1:8081");
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fopen("http://127.0.0.1:8081", "r");
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file("http://127.0.0.1:8081");
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md5_file("http://127.0.0.1:8081");
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```
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### CRLF
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Moreover, in some cases it might be even possible to send arbitrary headers via CRLF "vulnerabilities" in the previous functions:
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```php
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# The following will create a header called from with value Hi and
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# an extra header "Injected: I HAVE IT"
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ini_set("from", "Hi\r\nInjected: I HAVE IT");
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file_get_contents("http://127.0.0.1:8081");
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GET / HTTP/1.1
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From: Hi
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Injected: I HAVE IT
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Host: 127.0.0.1:8081
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Connection: close
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# Any of the previously mentioned functions will send those headers
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```
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{% hint style="warning" %}
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For more info about that CRLF vuln, check this bug [https://bugs.php.net/bug.php?id=81680\&edit=1](https://bugs.php.net/bug.php?id=81680\&edit=1)
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{% endhint %}
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Note that these function might have other methods to set arbitrary headers in requests, like:
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```php
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$url = "";
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$options = array(
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'http'=>array(
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'method'=>"GET",
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'header'=>"Accept-language: en\r\n" .
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"Cookie: foo=bar\r\n" . // check function.stream-context-create on php.net
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"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
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)
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);
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$context = stream_context_create($options);
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$file = file_get_contents($url, false, $context);
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```
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<figure><img src="/.gitbook/assets/image (675).png" alt=""><figcaption></figcaption></figure>
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Find vulnerabilities that matter most so you can fix them faster. Intruder tracks your attack surface, runs proactive threat scans, finds issues across your whole tech stack, from APIs to web apps and cloud systems. [**Try it for free**](https://www.intruder.io/?utm\_source=referral\&utm\_campaign=hacktricks) today.
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{% embed url="https://www.intruder.io/?utm_campaign=hacktricks&utm_source=referral" %}
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<details>
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<summary><strong>Learn AWS hacking from zero to hero with</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>htARTE (HackTricks AWS Red Team Expert)</strong></a><strong>!</strong></summary>
|
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Other ways to support HackTricks:
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* If you want to see your **company advertised in HackTricks** or **download HackTricks in PDF** Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
|
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* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
|
|
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
|
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** 🐦 [**@carlospolopm**](https://twitter.com/carlospolopm)**.**
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* **Share your hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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