PT-2024-40088 · Cometbft · Cometbft

Published

2024-02-28

·

Updated

2024-02-28

None

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Name of the Vulnerable Software and Affected Versions: CometBFT versions All
Description: A default configuration in CometBFT has been found to be insufficient for common use cases, potentially preventing the slashing mechanism from working in specific cases. The default values for EvidenceParams.MaxAgeNumBlocks and EvidenceParams.MaxAgeDuration consensus parameters may not be sufficient to provide coverage for the entire unbonding period for a chain. If the conditions of both of these parameters are exceeded, evidence may be prematurely expired and considered no longer valid, potentially allowing for unpunished Byzantine behavior if evidence is discovered outside of that window.
Recommendations: It is recommended that chain ecosystems and their maintainers set the consensus parameters EvidenceParams.MaxAgeNumBlocks and EvidenceParams.MaxAgeDuration to values appropriate for their use case.
  • EvidenceParams.MaxAgeDuration should exceed the duration of the chain’s unbonding period
  • EvidenceParams.MaxAgeNumBlocks should exceed the number of estimated blocks that will be produced by the chain throughout the unbonding period Regularly evaluate consensus parameters and configurations to ensure they meet the needs of the ecosystem as the network matures.

Weakness Enumeration

CWE-1188

Related Identifiers

GHSA-555P-M4V6-CQXV

Affected Products

Cometbft