🛡️ Sentinel: [CRITICAL] Fix timing attack vulnerability in token validation#328
🛡️ Sentinel: [CRITICAL] Fix timing attack vulnerability in token validation#328google-labs-jules[bot] wants to merge 2 commits into
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…dation Replaced length checks and raw buffer comparisons with SHA-256 hashed constant-time string comparisons.
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…dation Replaced length checks and raw buffer comparisons with SHA-256 hashed constant-time string comparisons. Formatted code via `bun run format`.
🚨 Severity: CRITICAL
💡 Vulnerability: The Bearer token validation used a length check before
crypto.timingSafeEqual, allowing attackers to infer the length of valid tokens through timing differences.🎯 Impact: Attackers could reduce the search space for brute-forcing authentication tokens, potentially leading to unauthorized access.
🔧 Fix: Changed the validation to hash both the provided token and the valid tokens to a fixed length (SHA-256) before using
crypto.timingSafeEqual, ensuring constant-time comparison regardless of input length.✅ Verification: Ran
bun run lint,bun test ./tests/unit/cli/commands/serve.test.ts, andbun run test:fullsuccessfully.PR created automatically by Jules for task 5661951911092565655 started by @YoungSx