[ZKS-01] Add round check in signed proposals cache #3109
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howardwu
approved these changes
Mar 3, 2024
This was referenced Mar 4, 2024
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Motivation
This PR adds a check for malicious validators that try to have peers double-sign proposals by circumventing the
signed_proposalscache. The simple check is to now disconnect from peers that request signatures on proposals that are behind thesigned_round(of other proposals they've sent).Audit Finding: [zksecurity 01] Lack of Dag Containment Could Lead To Safety Violation