ghsa-mjqv-xhgm-gx8c
Vulnerability from github
Published
2023-04-21 18:30
Modified
2025-02-05 19:43
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar arithmetic
Details

io.finnet tss-lib before 2.0.0 can leak the lambda value of a private key via a timing side-channel attack because it relies on Go big.Int, which is not constant time for Cmp, modular exponentiation, or modular inverse. An example leak is in crypto/paillier/paillier.go. (bnb-chain/tss-lib and thorchain/tss are also affected.)

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/bnb-chain/tss-lib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.6-0.20230324145555-bb6fb30bd3eb"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/binance-chain/tss-lib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.6-0.20230324145555-bb6fb30bd3eb"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-26557"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-203"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-02-05T19:43:31Z",
    "nvd_published_at": "2023-04-21T18:15:07Z",
    "severity": "HIGH"
  },
  "details": "io.finnet tss-lib before 2.0.0 can leak the lambda value of a private key via a timing side-channel attack because it relies on Go big.Int, which is not constant time for Cmp, modular exponentiation, or modular inverse. An example leak is in crypto/paillier/paillier.go. (bnb-chain/tss-lib and thorchain/tss are also affected.)",
  "id": "GHSA-mjqv-xhgm-gx8c",
  "modified": "2025-02-05T19:43:31Z",
  "published": "2023-04-21T18:30:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26557"
    },
    {
      "type": "WEB",
      "url": "https://github.com/IoFinnet/tss-lib/releases/tag/v2.0.0"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/bnb-chain/tss-lib"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bnb-chain/tss-lib/tree/v1.3.5"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/thorchain/tss/tss-lib/-/tags/v0.1.3"
    },
    {
      "type": "WEB",
      "url": "https://medium.com/@iofinnet/security-disclosure-for-ecdsa-and-eddsa-threshold-signature-schemes-4e969af7155b"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2023-1733"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar arithmetic"
}


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