github - ghsa-cm2c-8c7c-974f

ghsa-cm2c-8c7c-974f

Vulnerability from github

Published

2022-05-24 19:02

Modified

2022-05-24 19:02

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-31876"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-05-13T22:15:00Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-cm2c-8c7c-974f",
  "modified": "2022-05-24T19:02:31Z",
  "published": "2022-05-24T19:02:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31876"
    },
    {
      "type": "WEB",
      "url": "https://bitcoinops.org/en/newsletters/2021/05/12"
    },
    {
      "type": "WEB",
      "url": "https://bitcoinops.org/en/topics/replace-by-fee"
    },
    {
      "type": "WEB",
      "url": "https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures#CVE-2021-31876"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bitcoin/bitcoin"
    },
    {
      "type": "WEB",
      "url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-May/018893.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2021-31876

Vulnerability from cvelistv5

Published

2021-05-13 21:03

Modified

2024-08-03 23:10

Severity ?

Summary

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

Version: n/a

Show details on NVD website

JSON

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            "url": "https://bitcoinops.org/en/topics/replace-by-fee/"
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    "datePublished": "2021-05-13T21:03:38",
    "dateReserved": "2021-04-29T00:00:00",
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  },
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  "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.

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