Summary
An issue was identified in the Interchain Security (ICS) module that could result in the slashing of a validator for an "old" equivocation. The height-base filter for consumer equivocation evidence introduced in v2.4.0-lsm was re-enabled.
Details
ICS v2.4.0-lsm introduced a height-base filter for consumer equivocation evidence. This feature enables a provider to set per consumer chain minimum heights for which cryptographic evidence is considered valid. The Cosmos Hub v14 upgrade bumped ICS to v2.4.0-lsm and also set the minimum evidence height for both neutron-1 and stride-1 consumer chains to their respective height at that time (see PR). As a result, "older" cryptographic evidence was no longer accepted by the Hub.
The Cosmos Hub v15 upgrade bumped ICS to v3.3.3-lsm, which had the height-base filter for consumer equivocation evidence disabled.
Summary
An issue was identified in the Interchain Security (ICS) module that could result in the slashing of a validator for an "old" equivocation. The height-base filter for consumer equivocation evidence introduced in v2.4.0-lsm was re-enabled.
Details
ICS v2.4.0-lsm introduced a height-base filter for consumer equivocation evidence. This feature enables a provider to set per consumer chain minimum heights for which cryptographic evidence is considered valid. The Cosmos Hub v14 upgrade bumped ICS to v2.4.0-lsm and also set the minimum evidence height for both
neutron-1andstride-1consumer chains to their respective height at that time (see PR). As a result, "older" cryptographic evidence was no longer accepted by the Hub.The Cosmos Hub v15 upgrade bumped ICS to v3.3.3-lsm, which had the height-base filter for consumer equivocation evidence disabled.