Missing Authentication for Critical Function (CWE-306)

Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

As data traverses trust boundaries, the data should be validated before being processed. When authentication is not applied to critical functions, attackers can invoke these functions without proving their identity.

보급률

높음

자주 악용됨

영향

높음

6개의 높은 심각도 규칙

예방

문서화됨

6개의 수정 예시

2 예방

이 취약점을 수정하는 방법

🐍 Python 모두 보기 Python 자세히 →

Django View Missing Authentication HIGH

Add @login_required or @permission_required decorator to all protected views

+7 -5 python

- from django.http import JsonResponse
- from .models import Document
- 
- def delete_document(request, doc_id):
-     doc = Document.objects.get(id=doc_id)
+ from django.contrib.auth.decorators import login_required
+ from django.http import JsonResponse
+ from .models import Document
+ 
+ @login_required
+ def delete_document(request, doc_id):
+     doc = Document.objects.get(id=doc_id, owner=request.user)
      doc.delete()
      return JsonResponse({'status': 'deleted'})

FastAPI Endpoint Missing Authentication HIGH

Add authentication using FastAPI Depends() dependency injection

+10 -6 python

- from fastapi import FastAPI
- 
- app = FastAPI()
- 
- @app.delete("/users/{user_id}")
- async def delete_user(user_id: int):
+ from fastapi import FastAPI, Depends
+ from myapp.auth import get_current_user
+ 
+ app = FastAPI()
+ 
+ @app.delete("/users/{user_id}")
+ async def delete_user(
+     user_id: int,
+     current_user: User = Depends(get_current_user)
+ ):
      await User.filter(id=user_id).delete()
      return {"deleted": user_id}

🐹 Go 모두 보기 Go 자세히 →

Echo Missing JWT Middleware HIGH

Add Echo JWT middleware to protect API endpoints

+13 -5 go

  package main
  
- import "github.com/labstack/echo/v4"
- 
- func main() {
-     e := echo.New()
-     e.POST("/api/transfer", transferHandler)
+ import (
+     "os"
+     "github.com/labstack/echo/v4"
+     echojwt "github.com/labstack/echo-jwt/v4"
+ )
+ 
+ func main() {
+     e := echo.New()
+     api := e.Group("/api")
+     api.Use(echojwt.WithConfig(echojwt.Config{
+         SigningKey: []byte(os.Getenv("JWT_SECRET")),
+     }))
+     api.POST("/transfer", transferHandler)
      e.Start(":8080")
  }

Fiber Missing JWT Middleware HIGH

Add Fiber JWT middleware to protect API endpoints

+13 -5 go

  package main
  
- import "github.com/gofiber/fiber/v2"
- 
- func main() {
-     app := fiber.New()
-     app.Post("/api/transfer", transferHandler)
+ import (
+     "os"
+     "github.com/gofiber/fiber/v2"
+     jwtware "github.com/gofiber/contrib/jwt"
+ )
+ 
+ func main() {
+     app := fiber.New()
+     api := app.Group("/api")
+     api.Use(jwtware.New(jwtware.Config{
+         SigningKey: jwtware.SigningKey{Key: []byte(os.Getenv("JWT_SECRET"))},
+     }))
+     api.Post("/transfer", transferHandler)
      app.Listen(":3000")
  }

Gin Missing JWT Middleware HIGH

Add JWT authentication middleware to protect API endpoints

+15 -5 go

  package main
  
- import "github.com/gin-gonic/gin"
- 
- func main() {
-     r := gin.Default()
-     r.POST("/api/transfer", transferHandler)
+ import (
+     "os"
+     "github.com/gin-gonic/gin"
+     jwt "github.com/appleboy/gin-jwt/v2"
+ )
+ 
+ func main() {
+     r := gin.Default()
+     auth, _ := jwt.New(&jwt.GinJWTMiddleware{
+         Realm: "api",
+         Key:   []byte(os.Getenv("JWT_SECRET")),
+     })
+     api := r.Group("/api")
+     api.Use(auth.MiddlewareFunc())
+     api.POST("/transfer", transferHandler)
      r.Run(":8080")
  }

🟨 JavaScript 모두 보기 JavaScript 자세히 →

NestJS Endpoint Missing Authentication Guard HIGH

Add @UseGuards decorator with authentication guard at controller or method level

+5 -3 javascript

- import { Controller, Get, Post, Body, Param } from '@nestjs/common';
- 
- @Controller('users')
+ import { Controller, Get, Post, Body, Param, UseGuards } from '@nestjs/common';
+ import { JwtAuthGuard } from '../auth/jwt-auth.guard';
+ 
+ @Controller('users')
+ @UseGuards(JwtAuthGuard)
  export class UsersController {
    @Get(':id')
    findOne(@Param('id') id: string) {
      return this.usersService.findOne(id);
    }
  
    @Post()
    create(@Body() dto: CreateUserDto) {
      return this.usersService.create(dto);
    }
  }

3 탐지

코드에서 취약점 찾기

Shoulder를 사용하여 코드에서 Missing Authentication for Critical Function 패턴을 스캔하세요. 6 규칙.

터미널

# Scan with Shoulder CLI
npx @shoulderdev/cli trust --cwe=306

# Or scan entire project
npx @shoulderdev/cli trust .

탐지 규칙 (6)

🐹 Go 3 rules

Echo Missing JWT Middleware HIGH

API endpoints lack JWT authentication middleware protection.

Fiber Missing JWT Middleware HIGH

API endpoints lack JWT authentication middleware protection.

Gin Missing JWT Middleware HIGH

API endpoints lack JWT authentication middleware protection.

🐍 Python 2 rules

Django View Missing Authentication HIGH

Detects Django views that should require authentication but lack @login_required, @permission_required, or other authentication decorators.

FastAPI Endpoint Missing Authentication HIGH

Detects FastAPI endpoints that perform sensitive operations without authentication via Depends() dependency injection.

🔷 Typescript 1 rules

NestJS Endpoint Missing Authentication Guard HIGH

Endpoints without @UseGuards or @Public decorators are accessible to unauthenticated users, enabling unauthorized access.

4 경고 신호

코드 리뷰에서 주의할 점

이 패턴은 잠재적인 Missing Authentication for Critical Function 취약점을 나타냅니다. 코드 리뷰와 보안 감사 중에 찾아보세요.

🟠

View handles sensitive operations without authentication decorator django-missing-authentication

🟠

Django views that should require authentication but lack @login_required, @permission_required, or o django-missing-authentication

🟠

Endpoint performs sensitive operations without Depends(get_current_user) or similar auth fastapi-missing-authentication

🟠

FastAPI endpoints that perform sensitive operations without authentication via Depends() dependency fastapi-missing-authentication

🟠

Gin application missing JWT authentication middleware go-gin-missing-jwt

🟠

NestJS endpoint has no @UseGuards() decorator for authentication nestjs-missing-auth-guard

🔍

코드베이스를 스캔하세요: Missing Authentication for Critical Function

Shoulder CLI는 전체 코드베이스에서 취약한 패턴을 찾아냅니다.

npx shoulder trust 모든 규칙 보기