GHSA-CXQV-R2CC-R9C9

Vulnerability from github – Published: 2022-05-24 19:01 – Updated: 2025-11-04 00:30
VLAI?
Details

Improper input validation of octal strings in Python stdlib ipaddress 3.10 and below allows unauthenticated remote attackers to perform indeterminate SSRF, RFI, and LFI attacks on many programs that rely on Python stdlib ipaddress. IP address octects are left stripped instead of evaluated as valid IP addresses.

Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2021-29921"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-05-06T13:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Improper input validation of octal strings in Python stdlib ipaddress 3.10 and below allows unauthenticated remote attackers to perform indeterminate SSRF, RFI, and LFI attacks on many programs that rely on Python stdlib ipaddress. IP address octects are left stripped instead of evaluated as valid IP addresses.",
  "id": "GHSA-cxqv-r2cc-r9c9",
  "modified": "2025-11-04T00:30:30Z",
  "published": "2022-05-24T19:01:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29921"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/pull/12577"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/pull/25099"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
    },
    {
      "type": "WEB",
      "url": "https://sick.codes/sick-2021-014"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210622-0003"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202305-02"
    },
    {
      "type": "WEB",
      "url": "https://python-security.readthedocs.io/vuln/ipaddress-ipv4-leading-zeros.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-014.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sickcodes"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rst"
    },
    {
      "type": "WEB",
      "url": "https://docs.python.org/3/library/ipaddress.html"
    },
    {
      "type": "WEB",
      "url": "https://bugs.python.org/issue36384"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.



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