{
  "id": "CVE-2002-0515",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2002-08-12T04:00:00.000",
  "lastModified": "2025-04-03T01:03:51.193",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "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 est\u00e1 siendo filtrado a cuando no lo est\u00e1, lo que permite a atacantes remotos identificar puertos filtrados comparando los TTL."
    }
  ],
  "metrics": {
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "baseScore": 5.0,
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-203"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:phildev:ipfilter:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "3.4.25",
              "matchCriteriaId": "799CA85E-75CF-4D30-8746-C42293404170"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "http://www.iss.net/security_center/static/8738.php",
      "source": "cve@mitre.org",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.securityfocus.com/archive/1/265188",
      "source": "cve@mitre.org",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.securityfocus.com/bid/4403",
      "source": "cve@mitre.org",
      "tags": [
        "Broken Link",
        "Exploit",
        "Third Party Advisory",
        "VDB Entry",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.iss.net/security_center/static/8738.php",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.securityfocus.com/archive/1/265188",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.securityfocus.com/bid/4403",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link",
        "Exploit",
        "Third Party Advisory",
        "VDB Entry",
        "Vendor Advisory"
      ]
    }
  ]
}