tidy patch 181 #186
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tidy patch 181 #186
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…on in Cosmos SDK may allow incorrect voting power assumptions ## Summary The default `ValidateVoteExtensions` helper function infers total voting power based off of the injected `VoteExtension`, which are injected by the proposer. If your chain utilizes the `ValidateVoteExtensions` helper in ProcessProposal, a dishonest proposer can potentially mutate voting power of each validator it includes in the injected `VoteExtension`, which could have potentially unexpected or negative consequences on modified state. Additional validation on injected `VoteExtension` data was added to confirm voting power against the state machine. **Details** The ValidateVoteExtensions helper function in Cosmos SDK allows a dishonest proposer to mutate the voting power of validators included in the injected VoteExtension. This can lead to unexpected or negative consequences on the modified state of the blockchain. The function infers the total voting power based on the injected VoteExtension, which can be manipulated by the proposer. To mitigate this vulnerability, additional validation on the injected VoteExtension data has been added to confirm voting power against the state machine.
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This PR runs go mod tidy on #181, because at no time should someone inherit deprecated/buggy versions from a repository in the cosmos org.