GHSA-x5vx-95h7-rv4p: Cosmos SDK Groups Module Can Halt Chain Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-x5vx-95h7-rv4p",
  "modified" : "2025-02-20T20:18:25Z",
  "published" : "2025-02-20T20:18:25Z",
  "aliases" : [ ],
  "summary" : "Cosmos SDK: Groups module can halt chain when handling a malicious proposal",
  "details" : "Name: ASA-2025-003: Groups module can halt chain when handling a malicious proposal\nComponent: CosmosSDK\nCriticality: High (Considerable Impact; Likely Likelihood per [ACMv1.2](https://github.com/interchainio/security/blob/main/resources/CLASSIFICATION_MATRIX.md))\nAffected versions: <= v0.47.15, <= 0.50.11\nAffected users: Validators, Full nodes, Users on chains that utilize the groups module\n\n### Description\n\nAn issue was discovered in the groups module where a malicious proposal would result in a division by zero, and subsequently halt a chain due to the resulting error. Any user that can interact with the groups module can introduce this state.\n\n### Patches\n\nThe new Cosmos SDK release [v0.50.12](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.50.12) and [v0.47.16](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.47.16) fix this issue.\n\n### Workarounds\n\nThere are no known workarounds for this issue.  It is advised that chains apply the update.\n\n### Timeline\n\n* February 9, 2025, 5:18pm PST: Issue reported to the Cosmos Bug Bounty program\n* February 9, 2025, 8:12am PST: Issue triaged by Amulet on-call, and distributed to Core team\n* February 9, 2025, 12:25pm PST: Core team completes validation of issue\n* February 18, 2025, 8:00am PST / 17:00 CET: Pre-notification delivered\n* February 20, 2025, 8:00am PST / 17:00 CET: Patch made available\n\nThis issue was reported to the Cosmos Bug Bounty Program by [dongsam](https://github.com/dongsam) on HackerOne on February 9, 2025. 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\nIf you have questions about Interchain security efforts, please reach out to our official communication channel at [security@interchain.io](mailto:security@interchain.io). For more information about the Interchain Foundation’s engagement with Amulet, and to sign up for security notification emails, please see https://github.com/interchainio/security.  \n\nA Github Security Advisory for this issue is available in the Cosmos SDK [repository](https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-x5vx-95h7-rv4p).",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/cosmos/cosmos-sdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.47.16-ics-lsm"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.47.15"
    }
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/cosmos/cosmos-sdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.50.0-alpha.0"
      }, {
        "fixed" : "0.50.12"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.50.11"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-x5vx-95h7-rv4p"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cosmos/cosmos-sdk/commit/0a98b65b24900a0e608866c78f172cf8e4140aea"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/cosmos/cosmos-sdk"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cosmos/cosmos-sdk/releases/tag/v0.47.16"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cosmos/cosmos-sdk/releases/tag/v0.50.12"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-369" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-02-20T20:18:25Z",
    "nvd_published_at" : null
  }
}