ghsa-v592-xf75-856p
Vulnerability from github
Published
2021-06-29 21:12
Modified
2023-10-02 15:12
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Summary
Erroneous Proof of Work calculation in geth
Details

Impact

An ethash mining DAG generation flaw in Geth could cause miners to erroneously calculate PoW in an upcoming epoch (estimated early January, 2021). This happened on the ETC chain on 2020-11-06. This issue is relevant only for miners, non-mining nodes are unaffected.

Specific Go Packages Affected

github.com/ethereum/go-ethereum/consensus

Patches

This issue is also fixed as of 1.9.24. Thanks to @slavikus for bringing the issue to our attention and writing the fix.

For more information

If you have any questions or comments about this advisory: * Open an issue in go-ethereum * Email us at security@ethereum.org

Show details on source website

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/ethereum/go-ethereum"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.9.24"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-26240"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-682"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-21T21:52:58Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\nAn ethash mining DAG generation flaw in Geth could cause miners to erroneously calculate PoW in an upcoming epoch (estimated early January, 2021). This happened on the ETC chain on 2020-11-06. This issue is relevant only for miners, non-mining nodes are unaffected.\n\n### Specific Go Packages Affected\ngithub.com/ethereum/go-ethereum/consensus\n\n### Patches\nThis issue is also fixed as of 1.9.24. Thanks to @slavikus for bringing the issue to our attention and writing the fix. \n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [go-ethereum](https://github.com/ethereum/go-ethereum)\n* Email us at [security@ethereum.org](mailto:security@ethereum.org)",
  "id": "GHSA-v592-xf75-856p",
  "modified": "2023-10-02T15:12:07Z",
  "published": "2021-06-29T21:12:56Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ethereum/go-ethereum/security/advisories/GHSA-v592-xf75-856p"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26240"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ethereum/go-ethereum/pull/21793"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ethereum/go-ethereum/commit/d990df909d7839640143344e79356754384dcdd0"
    },
    {
      "type": "WEB",
      "url": "https://blog.ethereum.org/2020/11/12/geth_security_release"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Erroneous Proof of Work calculation in geth"
}


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