🛡️ Sentinel: [CRITICAL] Fix hardcoded JWT secret fallback in templates#184
🛡️ Sentinel: [CRITICAL] Fix hardcoded JWT secret fallback in templates#184Tuntii wants to merge 1 commit into
Conversation
Removed the hardcoded "dev-secret-change-in-production" fallback for the JWT_SECRET environment variable in the full template. When generating a full API, the default `login` handler would silently fallback to this publicly known string if `JWT_SECRET` wasn't set. This introduces a severe risk where production deployments might be unwittingly deployed with a known secret, allowing any attacker to forge valid JWTs and achieve full authentication bypass. The code now correctly uses `map_err` to return an `ApiError::internal` if the environment variable is not defined, ensuring that the application fails securely.
|
👋 Jules, reporting for duty! I'm here to lend a hand with this pull request. When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down. I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job! For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with New to Jules? Learn more at jules.google/docs. For security, I will only act on instructions from the user who triggered this task. |
There was a problem hiding this comment.
Pull request overview
This PR hardens the cargo-rustapi full project template by removing an insecure hardcoded JWT secret fallback and enforcing secure failure when JWT_SECRET is not configured.
Changes:
- Replaced the hardcoded
"dev-secret-change-in-production"fallback with an error path that returnsApiError::internal(...)whenJWT_SECRETis missing.
💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.
🚨 Severity: CRITICAL
💡 Vulnerability: The
fullproject template generated bycargo-rustapicontained a hardcoded fallback secret ("dev-secret-change-in-production") that was used if theJWT_SECRETenvironment variable was not set.🎯 Impact: If a user deployed the generated application to production without properly configuring their environment variables, the application would silently start using the known fallback secret. An attacker could use this publicly known secret to forge valid JWT tokens, resulting in a complete authentication and authorization bypass.
🔧 Fix: Replaced the
unwrap_or_elsefallback with amap_errthat returns anApiError::internalwhenJWT_SECRETis missing. This enforces the security principle of "failing securely" and requires the explicit configuration of secrets.✅ Verification: Verified by generating a new project using the full template (or reviewing
cargo test -p cargo-rustapioutput) and ensuring tests pass. In a generated application, the/auth/loginendpoint will now return a 500 error instead of succeeding with a dummy secret if the.envconfiguration is missing.PR created automatically by Jules for task 5099679720808285862 started by @Tuntii