GHSA-9GG6-CM3F-WF38

Vulnerability from github – Published: 2021-05-11 22:34 – Updated: 2026-10-14 12:31
VLAI
Summary
Incorrect Calculation and Use of Insufficiently Random Values in Python
Details

Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created.

Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2020-14422"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-330",
      "CWE-682"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-06-18T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created.",
  "id": "GHSA-9gg6-cm3f-wf38",
  "modified": "2026-10-14T12:31:15Z",
  "published": "2021-05-11T22:34:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14422"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/pull/20956"
    },
    {
      "type": "WEB",
      "url": "https://bugs.python.org/issue41004"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CNHPQGSP2YM3JAUD2VAMPXTIUQTZ2M2U"
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    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00003.html"
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    {
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00032.html"
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  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Incorrect Calculation and Use of Insufficiently Random Values in Python"
}



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