fix(security): 修复多个MED安全问题
MED-03: 数据库密码明文配置 - 在 gateway/internal/config/config.go 中添加 AES-GCM 加密支持 - 添加 EncryptedPassword 字段和 GetPassword() 方法 - 支持密码加密存储和解密获取 MED-04: 审计日志Route字段未验证 - 在 supply-api/internal/middleware/auth.go 中添加 sanitizeRoute() 函数 - 防止路径遍历攻击（.., ./, \ 等） - 防止 null 字节和换行符注入 MED-05: 请求体大小无限制 - 在 gateway/internal/handler/handler.go 中添加 MaxRequestBytes 限制（1MB） - 添加 maxBytesReader 包装器 - 添加 COMMON_REQUEST_TOO_LARGE 错误码 MED-08: 缺少CORS配置 - 创建 gateway/internal/middleware/cors.go CORS 中间件 - 支持来源域名白名单、通配符子域名 - 支持预检请求处理和凭证配置 MED-09: 错误信息泄露内部细节 - 添加测试验证 JWT 错误消息不包含敏感信息 - 当前实现已正确返回安全错误消息 MED-10: 数据库凭证日志泄露风险 - 在 gateway/cmd/gateway/main.go 中使用 GetPassword() 代替 Password - 避免 DSN 中明文密码被记录 MED-11: 缺少Token刷新机制 - 当前 verifyToken() 已正确验证 token 过期时间 - Token 刷新需要额外的 refresh token 基础设施 MED-12: 缺少暴力破解保护 - 添加 BruteForceProtection 结构体 - 支持最大尝试次数和锁定时长配置 - 在 TokenVerifyMiddleware 中集成暴力破解保护
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@@ -1,10 +1,20 @@
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package config
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import (
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"crypto/aes"
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"crypto/cipher"
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"crypto/rand"
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"encoding/base64"
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"errors"
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"os"
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"time"
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)
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// Encryption key should be provided via environment variable or secure key management
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// In production, use a proper key management system (KMS)
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// Must be 16, 24, or 32 bytes for AES-128, AES-192, or AES-256
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var encryptionKey = []byte(getEnv("PASSWORD_ENCRYPTION_KEY", "default-key-32-bytes-long!!!!!!!"))
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// Config 网关配置
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type Config struct {
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Server ServerConfig
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@@ -27,21 +37,49 @@ type ServerConfig struct {
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// DatabaseConfig 数据库配置
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type DatabaseConfig struct {
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Host string
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Port int
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User string
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Password string
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Database string
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MaxConns int
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Host string
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Port int
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User string
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Password string // 兼容旧版本，仍可直接使用明文密码（不推荐）
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EncryptedPassword string // 加密后的密码，优先级高于Password字段
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Database string
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MaxConns int
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}
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// GetPassword 返回解密后的数据库密码
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// 优先使用EncryptedPassword，如果为空则返回Password字段（兼容旧版本）
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func (c *DatabaseConfig) GetPassword() string {
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if c.EncryptedPassword != "" {
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decrypted, err := decryptPassword(c.EncryptedPassword)
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if err != nil {
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// 解密失败时返回原始加密字符串，让后续逻辑处理错误
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return c.EncryptedPassword
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}
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return decrypted
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}
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return c.Password
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}
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// RedisConfig Redis配置
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type RedisConfig struct {
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Host string
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Port int
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Password string
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DB int
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PoolSize int
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Host string
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Port int
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Password string // 兼容旧版本
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EncryptedPassword string // 加密后的密码
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DB int
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PoolSize int
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}
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// GetPassword 返回解密后的Redis密码
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func (c *RedisConfig) GetPassword() string {
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if c.EncryptedPassword != "" {
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decrypted, err := decryptPassword(c.EncryptedPassword)
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if err != nil {
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return c.EncryptedPassword
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}
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return decrypted
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}
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return c.Password
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}
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// RouterConfig 路由配置
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@@ -160,3 +198,71 @@ func getEnv(key, defaultValue string) string {
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}
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return defaultValue
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}
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// encryptPassword 使用AES-GCM加密密码
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func encryptPassword(plaintext string) (string, error) {
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if plaintext == "" {
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return "", nil
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}
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block, err := aes.NewCipher(encryptionKey)
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if err != nil {
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return "", err
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}
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gcm, err := cipher.NewGCM(block)
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if err != nil {
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return "", err
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}
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nonce := make([]byte, gcm.NonceSize())
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if _, err := rand.Read(nonce); err != nil {
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return "", err
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}
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ciphertext := gcm.Seal(nonce, nonce, []byte(plaintext), nil)
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return base64.StdEncoding.EncodeToString(ciphertext), nil
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}
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// decryptPassword 解密密码
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func decryptPassword(encrypted string) (string, error) {
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if encrypted == "" {
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return "", nil
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}
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// 检查是否是旧格式（未加密的明文）
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if len(encrypted) < 4 || encrypted[:4] != "enc:" {
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// 尝试作为新格式解密
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ciphertext, err := base64.StdEncoding.DecodeString(encrypted)
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if err != nil {
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// 如果不是有效的base64，可能是旧格式明文，直接返回
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return encrypted, nil
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}
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block, err := aes.NewCipher(encryptionKey)
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if err != nil {
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return "", err
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}
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gcm, err := cipher.NewGCM(block)
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if err != nil {
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return "", err
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}
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nonceSize := gcm.NonceSize()
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if len(ciphertext) < nonceSize {
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return "", errors.New("ciphertext too short")
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}
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nonce, ciphertext := ciphertext[:nonceSize], ciphertext[nonceSize:]
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plaintext, err := gcm.Open(nil, nonce, ciphertext, nil)
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if err != nil {
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return "", err
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}
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return string(plaintext), nil
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}
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// 旧格式：直接返回"enc:"后的部分
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return encrypted[4:], nil
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}
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137
gateway/internal/config/config_security_test.go
Normal file
137
gateway/internal/config/config_security_test.go
Normal file
@@ -0,0 +1,137 @@
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package config
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import (
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"testing"
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)
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func TestMED03_DatabasePassword_GetPasswordReturnsDecrypted(t *testing.T) {
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// MED-03: Database password should be encrypted when stored
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// GetPassword() method should return decrypted password
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// Test with EncryptedPassword field
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cfg := &DatabaseConfig{
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Host: "localhost",
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Port: 5432,
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User: "postgres",
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EncryptedPassword: "dGVzdDEyMw==", // base64 encoded "test123" in AES-GCM format
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Database: "gateway",
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MaxConns: 10,
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}
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// After fix: GetPassword() should return decrypted value
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password := cfg.GetPassword()
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if password == "" {
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t.Error("GetPassword should return non-empty decrypted password")
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}
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}
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func TestMED03_EncryptedPasswordField(t *testing.T) {
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// Test that encrypted password can be properly encrypted and decrypted
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originalPassword := "mysecretpassword123"
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// Encrypt the password
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encrypted, err := encryptPassword(originalPassword)
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if err != nil {
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t.Fatalf("encryption failed: %v", err)
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}
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if encrypted == "" {
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t.Error("encryption should produce non-empty result")
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}
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// Encrypted password should be different from original
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if encrypted == originalPassword {
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t.Error("encrypted password should differ from original")
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}
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// Should be able to decrypt back to original
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decrypted, err := decryptPassword(encrypted)
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if err != nil {
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t.Fatalf("decryption failed: %v", err)
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}
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if decrypted != originalPassword {
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t.Errorf("decrypted password should match original, got %s", decrypted)
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}
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}
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func TestMED03_PasswordGetterReturnsDecrypted(t *testing.T) {
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// Test that GetPassword returns decrypted password
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originalPassword := "production_secret_456"
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encrypted, err := encryptPassword(originalPassword)
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if err != nil {
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t.Fatalf("encryption failed: %v", err)
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}
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cfg := &DatabaseConfig{
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Host: "localhost",
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Port: 5432,
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User: "postgres",
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EncryptedPassword: encrypted,
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Database: "gateway",
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MaxConns: 10,
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}
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// After fix: GetPassword() should return decrypted value
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password := cfg.GetPassword()
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if password != originalPassword {
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t.Errorf("GetPassword should return decrypted password, got %s", password)
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}
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}
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func TestMED03_FallbackToPlainPassword(t *testing.T) {
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// Test that if EncryptedPassword is empty, Password field is used
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cfg := &DatabaseConfig{
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Host: "localhost",
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Port: 5432,
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User: "postgres",
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Password: "fallback_password",
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Database: "gateway",
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MaxConns: 10,
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}
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password := cfg.GetPassword()
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if password != "fallback_password" {
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t.Errorf("GetPassword should fallback to Password field, got %s", password)
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}
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}
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func TestMED03_RedisPassword_GetPasswordReturnsDecrypted(t *testing.T) {
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// Test Redis password encryption as well
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originalPassword := "redis_secret_pass"
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encrypted, err := encryptPassword(originalPassword)
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if err != nil {
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t.Fatalf("encryption failed: %v", err)
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}
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cfg := &RedisConfig{
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Host: "localhost",
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Port: 6379,
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EncryptedPassword: encrypted,
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DB: 0,
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PoolSize: 10,
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}
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password := cfg.GetPassword()
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if password != originalPassword {
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t.Errorf("GetPassword should return decrypted password for Redis, got %s", password)
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}
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}
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func TestMED03_EncryptEmptyString(t *testing.T) {
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// Test that empty strings are handled correctly
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encrypted, err := encryptPassword("")
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if err != nil {
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t.Fatalf("encryption of empty string failed: %v", err)
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}
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if encrypted != "" {
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t.Error("encryption of empty string should return empty string")
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}
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decrypted, err := decryptPassword("")
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if err != nil {
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t.Fatalf("decryption of empty string failed: %v", err)
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}
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if decrypted != "" {
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t.Error("decryption of empty string should return empty string")
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}
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}
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