{
  "schema_version": "1.3.1",
  "id": "GO-2023-1557",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "aliases": [
    "CVE-2023-23625",
    "GHSA-q264-w97q-q778"
  ],
  "summary": "Denial of service via HAMT decoding panic in github.com/ipfs/go-unixfs",
  "details": "Trying to read malformed HAMT sharded directories can cause panics and virtual memory leaks. If you are reading untrusted user input, an attacker can then trigger a panic.\n\nThis is caused by bogus \"fanout\" parameter in the HAMT directory nodes. A workaround is to not feed untrusted user data to the decoding functions.",
  "affected": [
    {
      "package": {
        "name": "github.com/ipfs/go-unixfs",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.3"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "github.com/ipfs/go-unixfs/hamt",
            "symbols": [
              "NewHamtFromDag",
              "NewShard",
              "NewShardValue",
              "Shard.EnumLinks",
              "Shard.EnumLinksAsync",
              "Shard.Find",
              "Shard.ForEachLink",
              "Shard.Remove",
              "Shard.Set",
              "Shard.SetLink",
              "Shard.Swap",
              "Shard.Take",
              "makeShard",
              "newChilder"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-q264-w97q-q778"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ipfs/go-unixfs/commit/467d139a640ecee4f2e74643dafcc58bb3b54175"
    }
  ],
  "credits": [
    {
      "name": "Jorropo"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2023-1557"
  }
}