🛡️ Sentinel: [HIGH] Fix Whitespace Parsing Bug in Resources - #20
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🚨 Severity: HIGH
💡 Vulnerability: The `_normalize_resource` function previously checked for empty resources using exact string matching (`if resource == VOID_RESOURCE:`). A string containing only whitespace (e.g., `' '`) bypassed this check and was incorrectly processed, evaluating to the internal `[('@empty', 'all')]` structure which bypasses standard empty resource checks.
🎯 Impact: Attackers supplying whitespace-only resource strings could potentially match privileged internal resource assignments instead of being safely rejected/normalized to an empty resource list.
🔧 Fix: Updated the check to evaluate `if not resource.strip():` so that whitespace strings are robustly treated as empty resources (`[]`), ensuring no malicious bypasses.
✅ Verification: Ran `uv run pytest test/` and `uv run ruff check` which both passed successfully. Updated `test_empty_resource` to reflect the fixed expectation.
Co-authored-by: scartill <1055918+scartill@users.noreply.github.com>
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🚨 Severity: HIGH
💡 Vulnerability: The
_normalize_resourcefunction previously checked for empty resources using exact string matching (if resource == VOID_RESOURCE:). A string containing only whitespace (e.g.,' ') bypassed this check and was incorrectly processed, evaluating to the internal[('@empty', 'all')]structure which bypasses standard empty resource checks.🎯 Impact: Attackers supplying whitespace-only resource strings could potentially match privileged internal resource assignments instead of being safely rejected/normalized to an empty resource list.
🔧 Fix: Updated the check to evaluate
if not resource.strip():so that whitespace strings are robustly treated as empty resources ([]), ensuring no malicious bypasses.✅ Verification: Ran
uv run pytest test/anduv run ruff checkwhich both passed successfully. Updatedtest_empty_resourceto reflect the fixed expectation.PR created automatically by Jules for task 17834379482519542277 started by @scartill