Credential Stuffing in Hapi with Cockroachdb

Credential stuffing leverages previously breached username and password pairs to gain unauthorized access. When an API endpoint built with the Hapi framework uses Cockroachdb as its data store, the interaction between Hapi’s request handling and Cockroachdb’s authentication and query behavior can expose patterns that facilitate or amplify credential stuffing risks.

Hapi does not enforce authentication by default; it expects developers to explicitly add authentication strategies. If a Hapi route that accepts user credentials does not enforce strict rate limiting or request throttling, an attacker can submit many credential guesses in rapid succession. Cockroachdb, a distributed SQL database, authenticates connections using usernames and passwords or client certificates. If Hapi sends database credentials in clear text over an unencrypted connection, or if the application queries a user table without adequate protections, attackers can observe and abuse these authentication exchanges.

The specific risk pattern emerges when Hapi routes perform direct SQL queries or use an ORM that generates queries vulnerable to timing differences or error messages that reveal whether a username exists. Cockroachdb returns distinct errors for authentication failures versus syntax or connection issues. If Hapi exposes these errors without normalization, attackers can enumerate valid usernames. Additionally, if Hapi does not implement per-user rate limiting and instead applies only global rate limits, attackers can rotate through many accounts to stay below the threshold while still performing a high-volume attack against valid credentials stored in Cockroachdb.

Another vector is insecure credential storage. If Hapi applications store passwords in Cockroachdb using weak hashing or no salt, or they use reversible encryption, a compromised Cockroachdb dump directly yields plaintext or easily recoverable credentials that can be reused in stuffing campaigns. Even if the database is encrypted at rest, poor key management in the application layer can expose credentials during runtime when Hapi processes authentication requests.

OpenAPI/Swagger specifications analyzed by middleBrick can highlight these risks when endpoints accept credentials and interact with Cockroachdb without clear security constraints. Cross-referencing spec definitions with runtime findings helps identify whether authentication, input validation, and rate limiting checks are consistently enforced for endpoints that read or verify user credentials stored in Cockroachdb.

Mitigating credential stuffing in a Hapi and Cockroachdb stack requires precise controls at the application, transport, and database layers. The following code examples illustrate concrete, production-grade patterns.

Secure Hapi Route with Input Validation and Parameterized Queries

Always validate and sanitize inputs, and use parameterized queries to prevent injection and ensure consistent error handling.

const Hapi = require('@hapi/hapi');
const { Pool } = require('pg');

const pool = new Pool({
  connectionString: process.env.COCKROACHDB_URL,
  ssl: {
    rejectUnauthorized: true,
  },
});

const init = async () => {
  const server = Hapi.server({
    port: 3000,
    host: 'localhost',
  });

  server.route({
    method: 'POST',
    path: '/login',
    options: {
      validate: {
        payload: {
          username: Joi.string().alphanum().min(3).max(30).required(),
          password: Joi.string().min(8).required(),
        },
      },
      plugins: {
        // Example: integrate with an authentication strategy like session or JWT
      },
    },
    handler: async (request, h) => {
      const { username, password } = request.payload;
      const query = 'SELECT id, password_hash FROM users WHERE username = $1';
      try {
        const result = await pool.query(query, [username]);
        if (result.rows.length === 0) {
          // Return a generic response to avoid user enumeration
          return h.response({ error: 'Invalid credentials' }).code(401);
        }
        const user = result.rows[0];
        const isValid = await verifyPassword(password, user.password_hash);
        if (!isValid) {
          return h.response({ error: 'Invalid credentials' }).code(401);
        }
        // Issue token/session
        return { success: true };
      } catch (err) {
        // Log detailed error internally, return generic message externally
        console.error('Login error:', err);
        return h.response({ error: 'Invalid credentials' }).code(401);
      }
    },
  });

  await server.start();
  console.log('Server running on %s', server.info.uri);
};

const verifyPassword = async (password, hash) => {
  // Use a strong KDF such as argon2id
  return require('argon2').verify(hash, password);
};

process.on('unhandledRejection', (err) => {
  console.error(err);
  process.exit(1);
});

Transport and Connection Security

Ensure all connections to Cockroachdb use TLS with certificate verification. In Hapi, configure your client or proxy to require encrypted transport and prefer modern ciphers. Avoid embedding database credentials in code; use environment variables or a secrets manager injected at runtime.

Rate Limiting and Account Protection

Apply per-user rate limits to authentication endpoints to disrupt automated stuffing tools. Use a sliding window or token bucket algorithm stored in a fast, shared store (e.g., Redis). Combine with account lockout or increasing delays after repeated failures, but avoid revealing lockout status to attackers.

const RateLimiter = require('limiter').RateLimiter;
const userLimiter = new RateLimiter({ tokensPerInterval: 5, interval: 'minute' });

server.ext('onPreAuth', async (request, h) => {
  if (request.path === '/login') {
    const username = request.payload.username;
    const remaining = await userLimiter.removeTokens(username, 1);
    if (remaining < 0) {
      return h.response({ error: 'Too many attempts, try later' }).code(429);
    }
  }
  return h.continue;
});

Password Storage and Rotation

Store passwords in Cockroachdb using a memory-hard, adaptive KDF such as argon2id with unique salts per user. Rotate credentials and re-encrypt hashes periodically. Never store API keys or secrets in the same table as user credentials without additional encryption.

Auditing and Detection

Log authentication attempts with normalized outcomes and metadata (source IP, user agent, timestamp) without logging passwords. Correlate anomalies across instances to detect coordinated stuffing campaigns against your Cockroachdb-backed Hapi services. middleBrick scans can validate whether your endpoints expose excessive error details or lack required rate limiting and input validation controls.