cnvd - cnvd-2021-38774

cnvd-2021-38774

Vulnerability from cnvd

Title: Bitcoin Core存在未明漏洞（CNVD-2021-38774）

Description:

Bitcoin Core是一款用于验证区块链交易有效性的开源客户端。

Bitcoin Core存在安全漏洞，该漏洞允许远程攻击者可利用该漏洞绕过某些安全限制。

Severity: 中

Patch Name: Bitcoin Core存在未明漏洞（CNVD-2021-38774）的补丁

Patch Description:

Bitcoin Core是一款用于验证区块链交易有效性的开源客户端。

Bitcoin Core存在安全漏洞，该漏洞允许远程攻击者可利用该漏洞绕过某些安全限制。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures#CVE-2021-31876

Reference: https://www.cybersecurity-help.cz/vdb/SB2021050703

Impacted products

Name
Bitcoin Bitcoin Core >=0.12.0，<=0.21.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-31876"
    }
  },
  "description": "Bitcoin Core\u662f\u4e00\u6b3e\u7528\u4e8e\u9a8c\u8bc1\u533a\u5757\u94fe\u4ea4\u6613\u6709\u6548\u6027\u7684\u5f00\u6e90\u5ba2\u6237\u7aef\u3002\n\nBitcoin Core\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u5141\u8bb8\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u67d0\u4e9b\u5b89\u5168\u9650\u5236\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures#CVE-2021-31876",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-38774",
  "openTime": "2021-06-02",
  "patchDescription": "Bitcoin Core\u662f\u4e00\u6b3e\u7528\u4e8e\u9a8c\u8bc1\u533a\u5757\u94fe\u4ea4\u6613\u6709\u6548\u6027\u7684\u5f00\u6e90\u5ba2\u6237\u7aef\u3002\r\n\r\nBitcoin Core\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u5141\u8bb8\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u67d0\u4e9b\u5b89\u5168\u9650\u5236\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Bitcoin Core\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-38774\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Bitcoin Bitcoin Core \u003e=0.12.0\uff0c\u003c=0.21.1"
  },
  "referenceLink": "https://www.cybersecurity-help.cz/vdb/SB2021050703",
  "serverity": "\u4e2d",
  "submitTime": "2021-05-11",
  "title": "Bitcoin Core\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-38774\uff09"
}

CVE-2021-31876 (GCVE-0-2021-31876)

Vulnerability from cvelistv5

Published

2021-05-13 21:03

Modified

2024-08-03 23:10

Severity ?

CWE

Summary

Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction with nSequence = 0xff_ff_ff_ff, spending an unconfirmed parent with nSequence <= 0xff_ff_ff_fd, should be replaceable because there is inherited signaling by the child transaction. However, the actual PreChecks implementation does not enforce this. Instead, mempool rejects the replacement attempt of the unconfirmed child transaction.

References

▼	URL	Tags
	https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures#CVE-2021-31876	x_refsource_MISC
	https://bitcoinops.org/en/topics/replace-by-fee/	x_refsource_MISC
	https://github.com/bitcoin/bitcoin	x_refsource_MISC
	https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-May/018893.html	x_refsource_MISC
	https://bitcoinops.org/en/newsletters/2021/05/12/	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:10:31.041Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures#CVE-2021-31876"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bitcoinops.org/en/topics/replace-by-fee/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bitcoin/bitcoin"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-May/018893.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bitcoinops.org/en/newsletters/2021/05/12/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction with nSequence = 0xff_ff_ff_ff, spending an unconfirmed parent with nSequence \u003c= 0xff_ff_ff_fd, should be replaceable because there is inherited signaling by the child transaction. However, the actual PreChecks implementation does not enforce this. Instead, mempool rejects the replacement attempt of the unconfirmed child transaction."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-05-13T21:03:38",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures#CVE-2021-31876"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bitcoinops.org/en/topics/replace-by-fee/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bitcoin/bitcoin"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-May/018893.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bitcoinops.org/en/newsletters/2021/05/12/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-31876",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction with nSequence = 0xff_ff_ff_ff, spending an unconfirmed parent with nSequence \u003c= 0xff_ff_ff_fd, should be replaceable because there is inherited signaling by the child transaction. However, the actual PreChecks implementation does not enforce this. Instead, mempool rejects the replacement attempt of the unconfirmed child transaction."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures#CVE-2021-31876",
              "refsource": "MISC",
              "url": "https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures#CVE-2021-31876"
            },
            {
              "name": "https://bitcoinops.org/en/topics/replace-by-fee/",
              "refsource": "MISC",
              "url": "https://bitcoinops.org/en/topics/replace-by-fee/"
            },
            {
              "name": "https://github.com/bitcoin/bitcoin",
              "refsource": "MISC",
              "url": "https://github.com/bitcoin/bitcoin"
            },
            {
              "name": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-May/018893.html",
              "refsource": "MISC",
              "url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-May/018893.html"
            },
            {
              "name": "https://bitcoinops.org/en/newsletters/2021/05/12/",
              "refsource": "MISC",
              "url": "https://bitcoinops.org/en/newsletters/2021/05/12/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-31876",
    "datePublished": "2021-05-13T21:03:38",
    "dateReserved": "2021-04-29T00:00:00",
    "dateUpdated": "2024-08-03T23:10:31.041Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted