Semgrep 4

insecure-api/main-2.py

@@ -0,0 +1,214 @@
+from fastapi import FastAPI, HTTPException, Header, Request
+from typing import Optional
+from models import VideoGame, User
+from database import video_games, users
+import sqlite3
+import os
+import requests
+from fastapi.responses import RedirectResponse
+
+app = FastAPI(
+    title="Intentionally Insecure Video Game API",
+    description="An API designed for security education, demonstrating common vulnerabilities.",
+    version="1.0.0",
+    contact={
+        "name": "Your Name",
+        "email": "[email protected]",
+    },
+)
+
+# Initialize the SQLite database
+def init_db():
+    if not os.path.exists('videogames.db'):
+        conn = sqlite3.connect('videogames.db')
+        cursor = conn.cursor()
+        # Create table
+        cursor.execute('''
+            CREATE TABLE video_games (
+                id INTEGER PRIMARY KEY,
+                title TEXT NOT NULL,
+                developer TEXT NOT NULL,
+                publisher TEXT NOT NULL,
+                year_published INTEGER NOT NULL,
+                sales INTEGER NOT NULL
+            )
+        ''')
+        # Insert data
+        for game in video_games:
+            cursor.execute('''
+                INSERT INTO video_games (id, title, developer, publisher, year_published, sales)
+                VALUES (?, ?, ?, ?, ?, ?)
+            ''', (game.id, game.title, game.developer, game.publisher, game.year_published, game.sales))
+        conn.commit()
+        conn.close()
+
+# Call the init_db function when the app starts
+@app.on_event("startup")
+def startup_event():
+    init_db()
+
+# Public endpoint to get basic video game info
+@app.get("/games")
+def get_games():
+    return video_games
+
+# Vulnerable endpoint: No authentication required to get sensitive sales data
+@app.get("/games/{game_id}/sales")
+def get_game_sales(game_id: int):
+    # Vulnerability: No authentication or authorization checks (API1:2019 - Broken Object Level Authorization)
+    for game in video_games:
+        if game.id == game_id:
+            return {"title": game.title, "sales": game.sales}
+    raise HTTPException(status_code=404, detail="Game not found")
+
+# Vulnerable endpoint: Weak authentication and improper authorization
+@app.post("/games")
+def add_game(game: VideoGame, Authorization: Optional[str] = Header(None)):
+    # Vulnerability: Token sent in Authorization header without proper validation (API2:2019 - Broken Authentication)
+    if not Authorization:
+        raise HTTPException(status_code=401, detail="Authorization header required")
+
+    # Extract Bearer token
+    if not Authorization.startswith("Bearer "):
+        raise HTTPException(status_code=401, detail="Invalid Authorization header format")
+    token = Authorization.split(" ")[1]
+
+    # Vulnerability: Insecure token handling and authorization (API5:2019 - Broken Function Level Authorization)
+    for user in users:
+        if user.token == token:
+            if user.is_admin:
+                video_games.append(game)
+                return {"message": "Game added"}
+            else:
+                raise HTTPException(status_code=403, detail="Not authorized")
+    raise HTTPException(status_code=401, detail="Invalid token")
+
+# Vulnerable endpoint: Exposes sensitive user data
+@app.get("/users")
+def get_users():
+    # Vulnerability: Exposes tokens and admin status (API3:2019 - Excessive Data Exposure)
+    return users
+
+# Additional vulnerable endpoint: No rate limiting implemented
+@app.post("/login")
+def login(username: str):
+    # Vulnerability: No rate limiting allows brute-force attacks (API4:2019 - Lack of Resources & Rate Limiting)
+    for user in users:
+        if user.username == username:
+            return {"token": user.token}
+    raise HTTPException(status_code=404, detail="User not found")
+
+# Additional vulnerable endpoint: Mass assignment
+@app.put("/games/{game_id}")
+def update_game(game_id: int, updated_game: VideoGame):
+    # Vulnerability: Mass assignment allows overwriting of unintended fields (API6:2019 - Mass Assignment)
+    for i, game in enumerate(video_games):
+        if game.id == game_id:
+            video_games[i] = updated_game
+            return {"message": "Game updated"}
+    raise HTTPException(status_code=404, detail="Game not found")
+
+# Additional vulnerable endpoint: SQL Injection
+@app.get("/search")
+def search_games(query: str):
+    # Vulnerability: User input is not sanitized (API8:2019 - Injection)
+    conn = sqlite3.connect('videogames.db')
+    cursor = conn.cursor()
+    try:
+        sql_query = f"SELECT * FROM video_games WHERE title = '{query}'"
+        cursor.execute(sql_query)
+        rows = cursor.fetchall()
+    except Exception as e:
+        # Return the exception message for educational purposes (not recommended in production)
+        return {"error": str(e)}
+    finally:
+        conn.close()
+    # Convert rows to list of dictionaries
+    results = []
+    for row in rows:
+        results.append({
+            "id": row[0],
+            "title": row[1],
+            "developer": row[2],
+            "publisher": row[3],
+            "year_published": row[4],
+            "sales": row[5],
+        })
+    return results
+
+# Additional vulnerable endpoint: Improper assets management
+@app.get("/.env")
+def get_env():
+    # Vulnerability: Sensitive files are exposed (API9:2019 - Improper Assets Management)
+    return {"SECRET_KEY": "supersecretkey"}
+
+# Additional vulnerable endpoint: Insufficient logging and monitoring
+@app.post("/admin/delete_game")
+def delete_game(game_id: int, Authorization: Optional[str] = Header(None)):
+    # Vulnerability: Actions are not logged (API10:2019 - Insufficient Logging & Monitoring)
+    if not Authorization:
+        raise HTTPException(status_code=401, detail="Authorization header required")
+
+    # Extract Bearer token
+    if not Authorization.startswith("Bearer "):
+        raise HTTPException(status_code=401, detail="Invalid Authorization header format")
+    token = Authorization.split(" ")[1]
+
+    for user in users:
+        if user.token == token and user.is_admin:
+            for i, game in enumerate(video_games):
+                if game.id == game_id:
+                    deleted_game = video_games.pop(i)
+                    # No logging of the deletion action
+                    return {"message": f"Game '{deleted_game.title}' deleted"}
+            raise HTTPException(status_code=404, detail="Game not found")
+    raise HTTPException(status_code=403, detail="Not authorized")
+
+@app.post("/feedback")
+def submit_feedback(feedback: str):
+    # Vulnerability: User input is not sanitized before rendering (API7:2019 - Security Misconfiguration)
+    response = HTMLResponse(content=f"<html><body><h1>Feedback Received</h1><p>{feedback}</p></body></html>")
+    return response
+
+# Additional vulnerable endpoint: Insecure Direct Object References (IDOR)
+@app.get("/user_profile")
+def get_user_profile(user_id: int):
+    # Vulnerability: No authorization checks (API1:2019 - Broken Object Level Authorization)
+    for user in users:
+        if user.username == f"user{user_id}":
+            return user
+    raise HTTPException(status_code=404, detail="User not found")
+
+# Additional vulnerable endpoint: Cross-Site Request Forgery (CSRF)
+@app.post("/update_profile")
+def update_profile(username: str, email: str, Authorization: Optional[str] = Header(None)):
+    # Vulnerability: No CSRF protection (API5:2019 - Broken Function Level Authorization)
+    if not Authorization:
+        raise HTTPException(status_code=401, detail="Authorization header required")
+    # Extract Bearer token
+    if not Authorization.startswith("Bearer "):
+        raise HTTPException(status_code=401, detail="Invalid Authorization header format")
+    token = Authorization.split(" ")[1]
+    # Simulate updating user profile
+    for user in users:
+        if user.token == token:
+            user.username = username
+            user.email = email  # Assuming 'email' field exists in User model
+            return {"message": "Profile updated"}
+    raise HTTPException(status_code=401, detail="Invalid token")
+
+# Additional vulnerable endpoint: Server-Side Request Forgery (SSRF)
+@app.get("/fetch_url")
+def fetch_url_content(url: str):
+    # Vulnerability: No validation of the URL (API10:2019 - Unsafe Consumption of APIs)
+    try:
+        response = requests.get(url)
+        return {"content": response.text}
+    except Exception as e:
+        return {"error": str(e)}
+
+# Additional vulnerable endpoint: Unvalidated Redirects and Forwards
+@app.get("/redirect")
+def unsafe_redirect(next: str):
+    # Vulnerability: Unvalidated redirect (API10:2019 - Unsafe Consumption of APIs)
+    return RedirectResponse(url=next)

insecure-api/main.py

@@ -49,7 +49,18 @@
 
 # Public endpoint to get basic video game info
 @app.get("/games")
-def get_games():
+def get_games(query: str):
+    conn = sqlite3.connect('videogames.db')
+    cursor = conn.cursor()
+    try:
+        sql_query = f"SELECT * FROM tiles WHERE title = '{query}'"
+        cursor.execute(sql_query)
+        video_games = cursor.fetchall()
+    except Exception as e:
+        # Return the exception message for educational purposes (not recommended in production)
+        return {"error": str(e)}
+    finally:
+        conn.close()
     return video_games
 
 # Vulnerable endpoint: No authentication required to get sensitive sales data