DeFiLayer 1Layer 2
14,723 OP
Submission Details
Severity: medium
Invalid

Unverified BlockHashOracle Input Enables Profit Unlock Period Manipulation

Author Revealed upon completion
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Lead Judging Commences

0xnevi Lead Judge 11 days ago
Submission Judgement Published
Invalidated
Reason: Out of scope
Assigned finding tags:

[invalid] finding-block-number-no-input-check

- Anything related to the output by the `BLOCK_HASH_ORACLE` is OOS per \[docs here]\(<https://github.com/CodeHawks-Contests/2025-03-curve?tab=readme-ov-file#blockhash-oracle>). - The PoC utilizes a mock `BLOCK_HASH_ORACLE`which is not representative of the one used by the protocol - Even when block hash returned is incorrect, the assumption is already explicitly made known in the docs, and the contract allows a subsequent update within the same block to update and correct prices - All state roots and proofs must be verified by the OOS `StateProofVerifier` inherited as `Verifier`, so there is no proof that manipulating block timestamp/block number/inputs can affect a price update - There seems to be a lot of confusion on the block hash check. The block hash check is a unique identifier of a block and has nothing to do with the state root. All value verifications is performed by the OOS Verifier contract as mentioned above

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