{"id":"GHSA-86h5-xcpx-cfqc","summary":"ASA-2024-005: Potential slashing evasion during re-delegation","details":"## ASA-2024-005: Potential slashing evasion during re-delegation\n\n**Component**: Cosmos SDK\n**Criticality**: Low\n**Affected Versions**: Cosmos SDK versions \u003c= 0.50.4; \u003c= 0.47.9\n**Affected Users**: Chain developers, Validator and Node operators\n**Impact**: Slashing Evasion\n\n## Summary\n\nAn 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.\n\n## Next Steps for Impacted Parties\n\nIf 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.\n\nA Github Security Advisory for this issue is available in the Cosmos-SDK [repository](https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-86h5-xcpx-cfqc). For more information about Cosmos SDK, see https://docs.cosmos.network/.\n\nThis 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.\n","aliases":["GO-2024-2584"],"modified":"2024-11-04T17:14:28Z","published":"2024-02-27T21:55:52Z","database_specific":{"cwe_ids":["CWE-372"],"severity":"LOW","github_reviewed":true,"github_reviewed_at":"2024-02-27T21:55:52Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-86h5-xcpx-cfqc"},{"type":"WEB","url":"https://github.com/cosmos/cosmos-sdk/commit/7dbed2fc0c3ed7c285645e21cb1037d8810372ae"},{"type":"WEB","url":"https://github.com/cosmos/cosmos-sdk/commit/d1b5b0c5ae2c51206cc1849e09e4d59986742cc3"},{"type":"PACKAGE","url":"https://github.com/cosmos/cosmos-sdk"}],"affected":[{"package":{"name":"github.com/cosmos/cosmos-sdk","ecosystem":"Go","purl":"pkg:golang/github.com/cosmos/cosmos-sdk"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.50.0"},{"fixed":"0.50.5"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 0.50.4","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/02/GHSA-86h5-xcpx-cfqc/GHSA-86h5-xcpx-cfqc.json"}},{"package":{"name":"github.com/cosmos/cosmos-sdk","ecosystem":"Go","purl":"pkg:golang/github.com/cosmos/cosmos-sdk"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.47.10"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 0.47.9","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/02/GHSA-86h5-xcpx-cfqc/GHSA-86h5-xcpx-cfqc.json"}}],"schema_version":"1.9.0"}