Vulnerable Code Snippets

YesWeHack present code snippets containing several different vulnerabilities to practice your code analysis. The code snippets are beginner friendly but suitable for all levels!

~ New vulnerable code snippet at Twitter @yeswehack every Friday! 🗒

If you want to see something special or if you just have an idea about a vulnerable code snippet, feel free to create a "New Issue" where you explain your idea, no idea is stupid.

⚠️ Be aware

Be sure to run this in a secure environment, as the code is vulnerable and is intended to be used for learning code analysis!

Twitter posts 🔖

A Collection of all vulnerable code snippets posted on our Twitter 📂
📜#1 - SQLi & XSS | Backslash filter collide
📜#2 - Improper file access & XSS | Invalid char and regex verificaion
📜#3 - Log Forging injection, Path traversal & Code injection | Poor filter and improper include() handling
📜#4 - XSS | Invalid user input filter
📜#5 - SSRF & Broken authorization | Trusted user input and client IP from header.
📜#6 - SSTI | Mixed input format
📜#7 - SQLi | Use of invalid variable within statement
📜#8 - CSRF | No CSRF token included
📜#9 - Open Redirect | Invalid regex handler
📜#10 - DOM XSS | Backend filter collide with client side JavaScript
📜#11 - CORS | Misconfigured Access-Control-Allow header
📜#12 - CSRF/ClickJacking | GET request CSRF with insecure delete process / ClickJacking - X-Frame-Options set in HTML meta tag.
📜#13 - Path Traversal/Unrestricted File Upload | Poor Path Traversal and file upload protection results in a code injection.
📜#14 - DOS | Incorrect operator handler in 'for loop'
📜#15 - Weak Password Recovery Mechanism for Forgotten Password | Weak hash for password recovery
📜#16 - IDOR | insecure if statement leads to improper access control
📜#17 - Deserialization Of Untrusted Data | Execute trusted user input inside pickle function 'loads()'
📜#18 - new! | ...

Vulnerabilities 💀

Broken access control - CWE-284
Code injection - CWE-94
Cross Site Request Forgery (CSRF) - CWE-352
SQL injection (SQLi) - CWE-89
Cross Site Scripting (XSS) - CWE-79
Open Redirect - CWE-601
Server-side template injection (SSTI) - CWE-1336
Server Side Request Forgery (SSRF) - CWE-918
Cross Origin Resource Sharing (CORS) - CWE-942
Clickjacking - CWE-1021
Unrestricted File Upload - CWE-434
Path Traversal - CWE-22
Denial Of Service - CWE-400
Weak Password Recovery Mechanism for Forgotten Password - CWE-640
Insecure Direct Object Reference (IDOR) - CWE-639
Deserialization Of Untrusted Data - CWE-502

Programming Language 💻

Also included

SQL (MySQL)
HTML
CSS

Installation 🏁

This will create a new MySQL user and a database for the vulnerable code snippet to use.
(You should not move code snippets or any other file within repo)

mkdir VsnippetYWH && cd VsnippetYWH;
git clone https://github.com/yeswehack/vulnerable-code-snippets.git

⚠️ Replace '<USERNAME>' '<PASSWORD>' '<DATABASE>' and remove the #. This will be your new MySQL vulnerable snippet user, password and Database!
Make sure your in the correct folder when running this commands.

sudo apt update;
sudo systemctl start mysql;
cd db/;
chmod +x setupVsnippet.sh;
./setupVsnippet.sh # '<USERNAME>' '<PASSWORD>' '<DATABASE>';
sudo systemctl restart mysql;

Update

Inside the vulnerable snippet folder use: (Get newest snippets)

git pull

~ H4v3 y0u f0und th3 E4st3r 3gg y3t? 🐇🪺