Highlights
Auth Bypass: 4 prior fixes. Scrutinize any change in this area.
src/blockchain/mod.rs: most-fixed (3 issues). Treat as high-risk during review.
13 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Auth Bypass: Inverted logical verification of signatures and calldata allowed unauthorized layer-2 MPN fund withdrawals. Developers must ensure verification outcomes are not logically negated or bypassed.
Cryptographic Error: Processing public keys that are not on-curve or neglecting coordinates during signature validation can compromise cryptographic integrity. Strict validation of all public key points is required.
Auth Bypass: ContractPayment deposits and withdrawals lacked signature validation entirely, facilitating fraudulent transactions. All state-altering transaction structures must explicitly enforce sender authentication.