GHSA-86h5-xcpx-cfqc ASA-2024-005: Potential slashing evasion during re-delegation

• Go github.com/cosmos/cosmos-sdk: >= 0.50.0, < 0.50.5 → fixed in 0.50.5 • Go github.com/cosmos/cosmos-sdk: < 0.47.10 → fixed in 0.47.10

ASA-2024-005: Potential slashing evasion during re-delegation Component: Cosmos SDK Criticality: Low Affected Versions: Cosmos SDK versions <= 0.50.4; <= 0.47.9 Affected Users: Chain developers, Validator and Node operators Impact: Slashing Evasion Summary An issue was identified in the slashing mechanism that may allow for the evasion of slashing penalties during a slashing event. If a delegation contributed to byzantine behavior of a validator, and the validator has not yet been slashed, it may be possible for that delegation to evade a pending slashing penalty through re-delegation behavior. Additional validation logic was added to restrict this behavior. Next Steps for Impacted Parties If you are a chain developer on an affected version of the Cosmos SDK, it is advised to update to the latest available version of the Cosmos SDK for your project. Once a patched version is available, it is recommended that network operators upgrade. A Github Security Advisory for this issue is available in the Cosmos-SDK repository. For more information about Cosmos SDK, see https://docs.cosmos.network/. This issue was found by cat shark (Khanh) who reported it to the Cosmos Bug Bounty Program on HackerOne on December 6, 2023. If you believe you have found a bug in the Interchain Stack or would like to contribute to the program by reporting a bug, please see https://hackerone.com/cosmos.