frost-core: refresh shares with smaller min_signers will reduce group security

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "cveMetadata": {
    "cveId": "CVE-2025-58359",
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "dateUpdated": "2025-09-05T16:06:05.432Z",
    "dateReserved": "2025-08-29T16:19:59.010Z",
    "datePublished": "2025-09-04T23:50:45.746Z",
    "state": "PUBLISHED"
  },
  "containers": {
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M",
        "dateUpdated": "2025-09-04T23:50:45.746Z"
      },
      "title": "frost-core: refresh shares with smaller min_signers will reduce group security",
      "descriptions": [
        {
          "lang": "en",
          "value": "ZF FROST is a Rust implementation of FROST (Flexible Round-Optimised Schnorr Threshold signatures). In versions 2.0.0 through 2.1.0, refresh shares with smaller min_signers will reduce security of group. The inability to change min_signers (i.e. the threshold) with the refresh share functionality (frost_core::keys::refresh module) was not made clear to users. Using a smaller value would not decrease the threshold, and attempts to sign using a smaller threshold would fail. Additionally, after refreshing the shares with a smaller threshold, it would still be possible to sign with the original threshold, potentially causing a security loss to the participant's shares. This issue is fixed in version 2.2.0."
        }
      ],
      "affected": [
        {
          "vendor": "ZcashFoundation",
          "product": "frost",
          "versions": [
            {
              "version": ">= 2.0.0, < 2.2.0",
              "status": "affected"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-325: Missing Cryptographic Step",
              "cweId": "CWE-325",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/ZcashFoundation/frost/security/advisories/GHSA-wgq8-vr6r-mqxm",
          "name": "https://github.com/ZcashFoundation/frost/security/advisories/GHSA-wgq8-vr6r-mqxm",
          "tags": [
            "x_refsource_CONFIRM"
          ]
        },
        {
          "url": "https://github.com/ZcashFoundation/frost/commit/379ef689c733b3d9c80fd409071d4f3af4dafed2",
          "name": "https://github.com/ZcashFoundation/frost/commit/379ef689c733b3d9c80fd409071d4f3af4dafed2",
          "tags": [
            "x_refsource_MISC"
          ]
        },
        {
          "url": "https://github.com/ZcashFoundation/frost/releases/tag/frost-core%2Fv2.2.0",
          "name": "https://github.com/ZcashFoundation/frost/releases/tag/frost-core%2Fv2.2.0",
          "tags": [
            "x_refsource_MISC"
          ]
        }
      ],
      "metrics": [
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    "adp": [
      {
        "providerMetadata": {
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP",
          "dateUpdated": "2025-09-05T16:06:05.432Z"
        },
        "title": "CISA ADP Vulnrichment",
        "metrics": [
          {}
        ]
      }
    ]
  }
}