{
  "schema_version": "1.3.1",
  "id": "GO-2023-2119",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "aliases": [
    "GHSA-7p92-x423-vwj6"
  ],
  "summary": "Proof forgery due to insufficient randomness in github.com/consensys/gnark",
  "details": "A a third party may derive a valid proof from a valid initial tuple {proof, public_inputs}, corresponding to the same public inputs as the initial proof. This vulnerability is due to randomness being generated using a small part of the scratch memory describing the state, allowing for degrees of freedom in the transcript. Note that the impact is limited to the PlonK verifier smart contract.",
  "affected": [
    {
      "package": {
        "name": "github.com/consensys/gnark",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.1"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "github.com/consensys/gnark/backend/plonk/bls12-377",
            "symbols": [
              "Prove",
              "Verify"
            ]
          },
          {
            "path": "github.com/consensys/gnark/backend/plonk/bls12-381",
            "symbols": [
              "Prove",
              "Verify"
            ]
          },
          {
            "path": "github.com/consensys/gnark/backend/plonk/bls24-315",
            "symbols": [
              "Prove",
              "Verify"
            ]
          },
          {
            "path": "github.com/consensys/gnark/backend/plonk/bls24-317",
            "symbols": [
              "Prove",
              "Verify"
            ]
          },
          {
            "path": "github.com/consensys/gnark/backend/plonk/bn254",
            "symbols": [
              "Prove",
              "Verify"
            ]
          },
          {
            "path": "github.com/consensys/gnark/backend/plonk/bw6-633",
            "symbols": [
              "Prove",
              "Verify"
            ]
          },
          {
            "path": "github.com/consensys/gnark/backend/plonk/bw6-761",
            "symbols": [
              "Prove",
              "Verify"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/Consensys/gnark/security/advisories/GHSA-7p92-x423-vwj6"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Consensys/gnark/commit/3421eaa7d544286abf3de8c46282b8d4da6d5da0"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2023-2119"
  }
}