ASA-2024-006: ValidateVoteExtensions helper function in Cosmos SDK may allow incorrect voting power assumptions

ASA-2024-006: ValidateVoteExtensions helper function may allow incorrect voting power assumptions Component: Cosmos SDK Criticality: High Affected Versions: Cosmos SDK versions = 0.50.4, on 0.50 branches Affected Users: Chain developers, Validator and Node operators Impact: Elevation of Privilege...

A malicious delegator could artificially inflate the deductions for a transcoder, potentially leading to incorrect vote counting.

Lines of code Vulnerability details Impact Detailed description of the impact of this finding. Proof of Concept In the handleVoteOverrides function, the deductions are added to the transcoder's voter state without any validation: A malicious delegator could call countVote multiple times, each tim...