Vulnerable sample for Action test

[souro1212]

This PR intentionally adds risky patterns for testing ai-secure-code-review-action.

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📥 Commits

Reviewing files that changed from the base of the PR and between db1a7d5 and f3d2aab.

📒 Files selected for processing (1)

• index.php (1 hunks)

✨ Finishing touches

• 📝 Generate Docstrings

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/vuln-demo-1757571361

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[github-actions]

🔐 Secure Code Review (AI)

Risk Summary: High (3)

1. Finding: SQL Injection

   • Why it matters: The $id variable is directly interpolated into the SQL query without any sanitization or parameterization, making it vulnerable to SQL injection attacks.
   • Evidence (diff lines):

     $q = "SELECT * FROM users WHERE id = '$id'";

   • Fix (concrete): Use prepared statements to prevent SQL injection. For example:

     $stmt = $conn->prepare("SELECT * FROM users WHERE id = ?");
     $stmt->bind_param("i", $id);
     $stmt->execute();

2. Finding: Cross-Site Scripting (XSS)

   • Why it matters: The $user variable is directly echoed to the output without any sanitization, which can lead to XSS if the input is not properly encoded.
   • Evidence (diff lines):

     echo "Hello " . $user;

   • Fix (concrete): Use output encoding to prevent XSS. For example:

     echo "Hello " . htmlspecialchars($user, ENT_QUOTES, 'UTF-8');

3. Finding: Unvalidated Input

   • Why it matters: The code does not validate or sanitize the input from $_GET before using it, which can lead to various attacks, including XSS and SQL injection.
   • Evidence (diff lines):

     $user = $_GET["user"];
     $id = $_GET["id"];

   • Fix (concrete): Implement input validation and sanitization. For example:

     $user = filter_input(INPUT_GET, 'user', FILTER_SANITIZE_STRING);
     $id = filter_input(INPUT_GET, 'id', FILTER_VALIDATE_INT);

Safeguards Checklist:

• Input validation: Fail
• Output encoding: Fail
• Use of prepared statements for SQL queries: Fail
• Secure handling of user input: Fail

This diff is small and focused, but it contains critical security issues that need to be addressed immediately.

---

Models can make mistakes. Verify before merging.

[secure-code-warrior-for-github]

Micro-Learning Topic: Cross-site scripting (Detected by phrase)

Matched on "Cross-Site Scripting"

Cross-site scripting vulnerabilities occur when unescaped input is rendered into a page displayed to the user. When HTML or script is included in the input, it will be processed by a user's browser as HTML or script and can alter the appearance of the page or execute malicious scripts in their user context.

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Helpful references

• Prevent Cross-Site Scripting (XSS) in ASP.NET Core - A detailed Microsoft article on how to prevent cross-site scripting in ASP.NET Core.
• OWASP Cross Site Scripting (XSS) Software Attack - OWASP community page with comprehensive information about cross site scripting, and links to various OWASP resources to help detect or prevent it.
• OWASP Cross Site Scripting Prevention Cheat Sheet - This article provides a simple positive model for preventing XSS using output encoding properly.

Micro-Learning Topic: Injection attack (Detected by phrase)

Matched on "injection attack"

Injection flaws, such as SQL, NoSQL, OS, and LDAP injection, occur when untrusted data is sent to an interpreter as part of a command or query. The attacker’s hostile data can trick the interpreter into executing unintended commands or accessing data without proper authorization. Source: https://www.owasp.org/index.php/Category:OWASP_Top_Ten_Project

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Helpful references

• OWASP Top Ten 2021 A03: Injection - OWASP Top Ten articles provide basic techniques to protect against these high risk problem areas, and guidance on where to go next.
• OWASP Injection Prevention Cheat Sheet in Java - This article is focused on providing clear, simple, actionable guidance for preventing injection flaws in your Java applications.
• OWASP Input Validation Cheat Sheet - This cheatsheet is focused on providing clear, simple, actionable guidance for preventing injection and input validation flaws in your applications.
• OWASP Injection Prevention Cheat Sheet - This article is focused on providing clear, simple, actionable guidance for preventing injection flaws in your applications.
• OWASP Top Ten Proactive Controls 2018 C5: Validate All Inputs - Detailed article on input validation as a programming technique for ensuring that only properly formatted data may enter a software system component.

Micro-Learning Topic: SQL injection (Detected by phrase)

Matched on "SQL Injection"

What is this? (2min video)

This is probably one of the two most exploited vulnerabilities in web applications and has led to a number of high profile company breaches. It occurs when an application fails to sanitize or validate input before using it to dynamically construct a statement. An attacker that exploits this vulnerability will be able to gain access to the underlying database and view or modify data without permission.

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Helpful references

• PHP SQL Injection Page - A detailed page on SQL injection in the online PHP manual.
• OWASP SQL Injection Prevention Cheat Sheet - This article is focused on providing clear, simple, actionable guidance for preventing SQL Injection flaws in your applications.
• OWASP SQL Injection - OWASP community page with comprehensive information about SQL injection, and links to various OWASP resources to help detect or prevent it.
• OWASP Query Parameterization Cheat Sheet - A derivative work of the OWASP SQL Injection Prevention Cheat Sheet focused on SQL query parameterization.
• Preventing SQL Injection Attacks With Python - A tutorial on crafting parameterized queries, SQL composition and safe query execution in Python.