Cryptographic Failures in Chi with Cockroachdb

Chi is a minimal, functional routing library for Clojure web applications. When Chi endpoints interact with Cockroachdb, a distributed SQL database, cryptographic failures often arise from improper handling of data in transit and at rest, combined with Chi’s dynamic, runtime-oriented nature. Because Cockroachdb natively supports TLS for connections and offers features like encrypted backups, omitting these protections in Chi routes or database clients leads to exposure of sensitive information.

One common pattern in Chi applications is directly passing request parameters into SQL queries without sufficient validation or encryption. For example, a Chi route that constructs a connection string using environment variables but fails to enforce TLS can expose credentials or session tokens during transmission. Cockroachdb’s wire protocol encryption must be explicitly enabled on the client; Chi-based services that use generic PostgreSQL drivers without TLS settings leave data in plaintext over the network. This maps to the Data Exposure check in middleBrick scans, where unencrypted database communications are flagged as high severity.

Additionally, storing cryptographic keys or secrets as plain text within Chi application code or configuration files introduces risk. Because Chi services often reload configuration at runtime, secrets may be inadvertently logged or exposed through error messages. When these keys are used to encrypt data before inserting into Cockroachdb, weak key management practices — such as hardcoded keys or lack of key rotation — can render encryption ineffective. middleBrick’s Data Exposure and Encryption checks detect such misconfigurations by correlating runtime findings with OpenAPI specs and known sensitive patterns.

Another vector involves insecure deserialization when Chi passes structured data to Cockroachdb JSONB columns without verifying integrity. An attacker could inject malicious payloads that exploit weak cryptographic handling in application-layer encryption routines. middleBrick’s Input Validation and Data Exposure checks highlight cases where serialized data reaches the database without proper signing or authenticated encryption, aligning with OWASP API Top 10 A03:2023 and SSRF risks if endpoints are indirectly exposed.

Finally, LLM endpoints exposed through Chi services may inadvertently leak cryptographic material in model outputs. middleBrick’s unique LLM/AI Security checks scan for API keys, PII, and executable code in responses, ensuring that cryptographic failures do not propagate into AI-assisted components. By combining runtime analysis with spec-driven validation, middleBrick identifies gaps where encryption controls are insufficient for the Chi-Cockroachdb stack.

To remediate cryptographic failures in Chi applications using Cockroachdb, enforce TLS for all database connections and apply strict input validation. Below is a working example of a Chi route that securely connects to Cockroachdb with TLS and uses prepared statements to prevent injection.

(ns my-app.db
  (:require [cheshire.core :as json]
            [clj-http.client :as http]
            [next.jdbc :as jdbc]
            [next.jdbc.result-set :as rs]))

(def db
  (jdbc/get-datasource
   {:dbtype "postgresql"
    :dbname "mydb"
    :host "my-cockroachdb-cluster.cockroachlabs.com"
    :port 26257
    :user "myuser"
    :password "strong-password"
    :ssl {:ssl-mode "require"}}))

(defn get-user-by-id [request]
  (let [user-id (get-in request [:path-params :id])
        safe-id (when (re-matches #"\d+" user-id) (Long/parseLong user-id))]
    (if safe-id
      (jdbc/execute! db ["SELECT id, email FROM users WHERE id = ?" safe-id] {:builder-fn rs/as-unqualified-lower-maps})
      {:status 400 :body (json/generate-string {:error "invalid user id"})})))

(def app
  (-> (routes
       (GET "/users/:id" [] get-user-by-id))
      (wrap-params)
      (wrap-keyring))) ; hypothetical secure config middleware

This snippet ensures SSL mode is set to require, forcing encrypted connections to Cockroachdb. It also validates the :id parameter using a regex before passing it to a parameterized query, addressing Input Validation and BOLA/IDOR concerns covered by middleBrick scans.

For cryptographic key management, store secrets in environment variables and reference them securely in Chi middleware. Avoid logging sensitive values by customizing error handlers.

(def secure-app
  (-> app
      (wrap-keyring)
      (wrap-secure-headers) ; sets HSTS, CSP, etc.
      (wrap-reload "config.edn" {:watch? false}))) ; prevents auto-reload of secrets

middleBrick’s Pro plan enables continuous monitoring for such configurations, integrating with CI/CD pipelines via the GitHub Action to fail builds if encryption or validation checks regress. The MCP Server allows developers to scan APIs directly from IDEs like Claude or Cursor, reinforcing secure practices during development.