GSD-2020-26240

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth before version 1.9.24 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. This issue is fixed as of 1.9.24
Aliases
Aliases
CVE-2020-26240
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{
  "GSD": {
    "alias": "CVE-2020-26240",
    "description": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth before version 1.9.24 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. This issue is fixed as of 1.9.24",
    "id": "GSD-2020-26240"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-26240"
      ],
      "details": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth before version 1.9.24 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. This issue is fixed as of 1.9.24",
      "id": "GSD-2020-26240",
      "modified": "2023-12-13T01:22:08.825553Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-26240",
        "STATE": "PUBLIC",
        "TITLE": "Erroneous Proof of Work calculation in geth"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "go-ethereum",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 1.9.24"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "ethereum"
            }
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        }
      },
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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          {
            "lang": "eng",
            "value": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth before version 1.9.24 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. This issue is fixed as of 1.9.24"
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-682: Incorrect Calculation"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://blog.ethereum.org/2020/11/12/geth_security_release/",
            "refsource": "MISC",
            "url": "https://blog.ethereum.org/2020/11/12/geth_security_release/"
          },
          {
            "name": "https://github.com/ethereum/go-ethereum/security/advisories/GHSA-v592-xf75-856p",
            "refsource": "CONFIRM",
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          },
          {
            "name": "https://github.com/ethereum/go-ethereum/pull/21793",
            "refsource": "MISC",
            "url": "https://github.com/ethereum/go-ethereum/pull/21793"
          },
          {
            "name": "https://github.com/ethereum/go-ethereum/commit/d990df909d7839640143344e79356754384dcdd0",
            "refsource": "MISC",
            "url": "https://github.com/ethereum/go-ethereum/commit/d990df909d7839640143344e79356754384dcdd0"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-v592-xf75-856p",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003cv1.9.24",
          "affected_versions": "All versions before 1.9.24",
          "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "cwe_ids": [
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            "CWE-682",
            "CWE-937"
          ],
          "date": "2020-12-03",
          "description": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth could cause miners to erroneously calculate PoW in an upcoming epoch.",
          "fixed_versions": [
            "v1.9.24"
          ],
          "identifier": "CVE-2020-26240",
          "identifiers": [
            "CVE-2020-26240",
            "GHSA-v592-xf75-856p"
          ],
          "not_impacted": "All versions starting from 1.9.24",
          "package_slug": "go/github.com/ethereum/go-ethereum",
          "pubdate": "2020-11-25",
          "solution": "Upgrade to version 1.9.24 or above.",
          "title": "Incorrect Calculation",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-26240",
            "https://blog.ethereum.org/2020/11/12/geth_security_release/"
          ],
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                "sha": "cc05b050df5f88e80bb26aaf6d2f339c49c2d702",
                "tags": [
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                ],
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              "number": "v1.9.24"
            }
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          ],
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          "description": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth could cause miners to erroneously calculate PoW in an upcoming epoch (estimated early January ). This happened on the ETC chain on . This issue is relevant only for miners, non-mining nodes are unaffected.",
          "fixed_versions": [
            "v1.9.24"
          ],
          "identifier": "CVE-2020-26240",
          "identifiers": [
            "CVE-2020-26240",
            "GHSA-v592-xf75-856p"
          ],
          "not_impacted": "All versions starting from 1.9.24",
          "package_slug": "go/github.com/ethereum/go-ethereum/cmd/evm",
          "pubdate": "2020-11-25",
          "solution": "Upgrade to version 1.9.24 or above.",
          "title": "Incorrect Calculation",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-26240",
            "https://blog.ethereum.org/2020/11/12/geth_security_release/"
          ],
          "uuid": "ed2e9f21-60a0-485f-b413-4271ce5506d8",
          "versions": [
            {
              "commit": {
                "sha": "cc05b050df5f88e80bb26aaf6d2f339c49c2d702",
                "tags": [
                  "v1.9.24"
                ],
                "timestamp": "20201112201015"
              },
              "number": "v1.9.24"
            }
          ]
        },
        {
          "affected_range": "\u003c1.9.24",
          "affected_versions": "All versions before 1.9.24",
          "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-682",
            "CWE-937"
          ],
          "date": "2021-06-29",
          "description": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth before version 1.9.24 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. This issue is fixed as of 1.9.24",
          "fixed_versions": [
            "1.9.24"
          ],
          "identifier": "CVE-2020-26240",
          "identifiers": [
            "GHSA-v592-xf75-856p",
            "CVE-2020-26240"
          ],
          "not_impacted": "All versions starting from 1.9.24",
          "package_slug": "go/github.com/ethereum/go-ethereum/consensus",
          "pubdate": "2021-06-29",
          "solution": "Upgrade to version 1.9.24 or above.",
          "title": "Incorrect Calculation",
          "urls": [
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            "https://nvd.nist.gov/vuln/detail/CVE-2020-26240",
            "https://github.com/ethereum/go-ethereum/pull/21793",
            "https://github.com/ethereum/go-ethereum/commit/d990df909d7839640143344e79356754384dcdd0",
            "https://github.com/advisories/GHSA-v592-xf75-856p"
          ],
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        },
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          "description": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth could cause miners to erroneously calculate PoW in an upcoming epoch. This happened on the ETC chain on . This issue is relevant only for miners, non-mining nodes are unaffected.",
          "fixed_versions": [
            "v1.9.24"
          ],
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            "CVE-2020-26240",
            "GHSA-v592-xf75-856p"
          ],
          "not_impacted": "All versions starting from 1.9.24",
          "package_slug": "go/github.com/ethereum/go-ethereum/eth",
          "pubdate": "2020-11-25",
          "solution": "Upgrade to version 1.9.24 or above.",
          "title": "Incorrect Calculation",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-26240",
            "https://blog.ethereum.org/2020/11/12/geth_security_release/"
          ],
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              "url": "https://blog.ethereum.org/2020/11/12/geth_security_release/"
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
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          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2020-12-03T15:16Z",
      "publishedDate": "2020-11-25T02:15Z"
    }
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.