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Security Advisories: GSA_kwCzR0hTQS04Nmg1LXhjcHgtY2ZxY84AA5jS

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.

Permalink: https://github.com/advisories/GHSA-86h5-xcpx-cfqc
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS04Nmg1LXhjcHgtY2ZxY84AA5jS
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Low
Classification: General
Published: 9 months ago
Updated: 17 days ago

Identifiers: GHSA-86h5-xcpx-cfqc
References:

Repository: https://github.com/cosmos/cosmos-sdk
Blast Radius: 0.0

Affected Packages

go:github.com/cosmos/cosmos-sdk

Dependent packages: 4,393
Dependent repositories: 2,329
Downloads:
Affected Version Ranges: <= 0.47.9, >= 0.50.0, <= 0.50.4
Fixed in: 0.47.10, 0.50.5
All affected versions: 0.0.2, 0.0.3, 0.0.4, 0.2.0, 0.3.0, 0.3.1, 0.4.0, 0.4.1, 0.5.0, 0.5.1, 0.5.2, 0.6.0, 0.6.1, 0.6.2, 0.7.0, 0.7.1, 0.8.0, 0.9.0, 0.10.0, 0.11.0, 0.12.0, 0.13.0, 0.13.1, 0.14.0, 0.14.1, 0.15.0, 0.15.1, 0.16.0, 0.17.0, 0.17.1, 0.17.2, 0.17.3, 0.17.4, 0.17.5, 0.18.0, 0.19.0, 0.20.0, 0.21.0, 0.21.1, 0.22.0, 0.23.0, 0.23.1, 0.24.0, 0.24.1, 0.24.2, 0.25.0, 0.26.0, 0.27.0, 0.27.1, 0.28.0, 0.28.1, 0.29.0, 0.29.1, 0.30.0, 0.31.0, 0.31.1, 0.31.2, 0.32.0, 0.33.0, 0.33.1, 0.33.2, 0.34.0, 0.34.1, 0.34.2, 0.34.3, 0.34.4, 0.34.5, 0.34.6, 0.34.7, 0.34.8, 0.34.9, 0.34.10, 0.35.0, 0.36.0, 0.37.0, 0.37.1, 0.37.2, 0.37.3, 0.37.4, 0.37.5, 0.37.6, 0.37.7, 0.37.8, 0.37.9, 0.37.10, 0.37.11, 0.37.12, 0.37.13, 0.37.14, 0.37.15, 0.38.0, 0.38.1, 0.38.2, 0.38.3, 0.38.4, 0.38.5, 0.39.0, 0.39.1, 0.39.2, 0.39.3, 0.40.0, 0.40.1, 0.41.0, 0.41.1, 0.41.2, 0.41.3, 0.41.4, 0.42.0, 0.42.1, 0.42.2, 0.42.3, 0.42.4, 0.42.5, 0.42.6, 0.42.7, 0.42.8, 0.42.9, 0.42.10, 0.42.11, 0.43.0, 0.44.0, 0.44.1, 0.44.2, 0.44.3, 0.44.4, 0.44.5, 0.44.6, 0.44.7, 0.44.8, 0.45.0, 0.45.1, 0.45.2, 0.45.3, 0.45.4, 0.45.5, 0.45.6, 0.45.7, 0.45.8, 0.45.9, 0.45.10, 0.45.11, 0.45.12, 0.45.13, 0.45.14, 0.45.15, 0.45.16, 0.46.0, 0.46.1, 0.46.2, 0.46.3, 0.46.4, 0.46.5, 0.46.6, 0.46.7, 0.46.8, 0.46.9, 0.46.10, 0.46.11, 0.46.12, 0.46.13, 0.46.14, 0.46.15, 0.46.16, 0.47.0, 0.47.1, 0.47.2, 0.47.3, 0.47.4, 0.47.5, 0.47.6, 0.47.7, 0.47.8, 0.47.9, 0.50.0, 0.50.1, 0.50.2, 0.50.3, 0.50.4
All unaffected versions: 0.47.10, 0.47.11, 0.47.12, 0.47.13, 0.47.14, 0.50.5, 0.50.6, 0.50.7, 0.50.8, 0.50.9, 0.50.10