🛡️ Sentinel: [CRITICAL] Fix API Token Timing Attack#32
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- Replaced standard string comparison with `secrets.compare_digest` in `mcp/api.py`. - Added critical security learning to `.jules/sentinel.md`. Co-authored-by: dkdev179 <12934183+dkdev179@users.noreply.github.com>
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🚨 Severity: CRITICAL
💡 Vulnerability: API token verification was vulnerable to timing attacks due to standard string comparison (
credentials.credentials != API_TOKEN).🎯 Impact: Attackers could potentially deduce the API token by analyzing the time it takes for the server to reject incorrect tokens, allowing them to bypass authentication.
🔧 Fix: Replaced the standard equality check with
secrets.compare_digest()for constant-time string comparison, effectively preventing timing-based attacks. Added a journal entry detailing the vulnerability and prevention method.✅ Verification: Verified that tests pass via
python -m pytest tests/and linters pass viaruff check mcp/ tests/.PR created automatically by Jules for task 3563344684938009238 started by @dkdev179