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CVE-2002-0515

Estado: ModificadaMedia (5)—

IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs.

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)

Phildev — Ipfilter

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2002-0515",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2002-08-12T04:00:00.000",
  "references": [
    {
      "url": "http://www.iss.net/security_center/static/8738.php",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/265188",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/4403",
      "tags": [
        "Broken Link",
        "Exploit",
        "Third Party Advisory",
        "VDB Entry",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.iss.net/security_center/static/8738.php",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/265188",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/4403",
      "tags": [
        "Broken Link",
        "Exploit",
        "Third Party Advisory",
        "VDB Entry",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-203"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs."
    },
    {
      "lang": "es",
      "value": "IPFilter 3.4.25 y anteriores establece un TTL distinto cuando un puerto está siendo filtrado a cuando no lo está, lo que permite a atacantes remotos identificar puertos filtrados comparando los TTL."
    }
  ],
  "lastModified": "2026-06-16T21:57:35.550",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:phildev:ipfilter:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "799CA85E-75CF-4D30-8746-C42293404170",
              "versionEndIncluding": "3.4.25"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}