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CVE-2021-47154

Estado: AplazadaMedia (6.3)—

The Net::CIDR::Lite module before 0.22 for Perl does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Perl — NET Cidr LiteAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-47154",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47154",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-07-17T18:29:35.804190Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2024-03-18T05:15:06.140",
  "references": [
    {
      "url": "https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/stigtsp/Net-CIDR-Lite/commit/23b6ff0590dc279521863a502e890ef19a5a76fc",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2024/03/msg00023.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://metacpan.org/dist/Net-CIDR-Lite/changes",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://metacpan.org/pod/Net::CIDR::Lite",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/stigtsp/Net-CIDR-Lite/commit/23b6ff0590dc279521863a502e890ef19a5a76fc",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2024/03/msg00023.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://metacpan.org/dist/Net-CIDR-Lite/changes",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://metacpan.org/pod/Net::CIDR::Lite",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "The Net::CIDR::Lite module before 0.22 for Perl does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses."
    },
    {
      "lang": "es",
      "value": "El módulo Net::CIDR::Lite anterior a 0.22 para Perl no considera adecuadamente los caracteres cero extraños al comienzo de una cadena de dirección IP, lo que (en algunas situaciones) permite a los atacantes eludir el control de acceso basado en direcciones IP."
    }
  ],
  "lastModified": "2026-06-17T04:16:40.813",
  "sourceIdentifier": "cve@mitre.org"
}