APPSCAN扫描出Authentication.Credentials.Unprotected漏洞，求修复方向

Hey there, let’s tackle that Authentication.Credentials.Unprotected vulnerability your AppScan report flagged. The root issue is clear—your web service credentials are being transmitted without proper encryption or protection. Here’s a breakdown of actionable fixes to lock this down:

• Enforce TLS 1.2+ for all web service traffic
  Ditch HTTP entirely and use HTTPS for every request to/from your web service. Older TLS versions (1.0/1.1) have critical flaws, so stick to TLS 1.2 or 1.3.

  • If you’re using a client library (like HttpClient in .NET, requests in Python), configure it to reject unencrypted connections. For example, in .NET:

    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls13;
    

  • On the server side, set up a redirect from HTTP to HTTPS and configure your web service to only accept HTTPS requests.

• Stop hardcoding credentials—use a secrets manager
  Storing credentials in code, config files, or plaintext environment variables is a huge risk. Instead, leverage secure secrets management tools:

  • Cloud environments: AWS Secrets Manager, Azure Key Vault, Google Cloud Secret Manager (these encrypt secrets at rest and let you fetch them dynamically at runtime).
  • On-prem: HashiCorp Vault or OS-native secure storage (Windows Credential Manager, macOS Keychain).

• Add an extra encryption layer for credentials (even with HTTPS)
  While HTTPS encrypts the entire payload, you can add another layer of security by encrypting credentials before transmission. Use strong algorithms like RSA (asymmetric) or AES (symmetric with a securely exchanged key). For example: encrypt the username/password with the web service’s public key before sending, then the service decrypts it with its private key.

• Switch to token-based authentication
  Instead of sending raw username/password with every request, use OAuth 2.0, JWT, or API keys. These methods use short-lived, signed tokens that are far less sensitive than raw credentials.

  • For JWT, use strong signing algorithms (HS256/RS256) and set short expiration times. Rotate API keys regularly and store them securely just like passwords.

• Verify your fixes
  After making these changes, re-run AppScan to confirm the vulnerability is gone. You can also use Wireshark to capture traffic and double-check that credentials aren’t visible in plaintext.

内容的提问来源于stack exchange，提问作者Luis Gonzalez