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CVE-2006-4304

Status: ModifiedHigh (10)—

Buffer overflow in the sppp driver in FreeBSD 4.11 through 6.1, NetBSD 2.0 through 4.0 beta before 20060823, and OpenBSD 3.8 and 3.9 before 20060902 allows remote attackers to cause a denial of service (panic), obtain sensitive information, and possibly execute arbitrary code via crafted Link Control Protocol (LCP) packets with an option length that exceeds the overall length, which triggers the overflow in (1) pppoe and (2) ippp. NOTE: this issue was originally incorrectly reported for the ppp driver.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

Freebsd — FreebsdNetbsd — NetbsdOpenbsd — Openbsd

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2006-4304",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": true,
        "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": "2006-08-24T01:04:00.000",
  "references": [
    {
      "url": "ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-019.txt.asc",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/21587",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/21731",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://security.FreeBSD.org/advisories/FreeBSD-SA-06:18.ppp.asc",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://security.FreeBSD.org/patches/SA-06:18/ppp4x.patch",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://securitytracker.com/id?1016745",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openbsd.org/errata.html#sppp",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openbsd.org/errata38.html#sppp",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/19684",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/28562",
      "source": "cve@mitre.org"
    },
    {
      "url": "ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-019.txt.asc",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/21587",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/21731",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.FreeBSD.org/advisories/FreeBSD-SA-06:18.ppp.asc",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.FreeBSD.org/patches/SA-06:18/ppp4x.patch",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://securitytracker.com/id?1016745",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openbsd.org/errata.html#sppp",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openbsd.org/errata38.html#sppp",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/19684",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/28562",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer overflow in the sppp driver in FreeBSD 4.11 through 6.1, NetBSD 2.0 through 4.0 beta before 20060823, and OpenBSD 3.8 and 3.9 before 20060902 allows remote attackers to cause a denial of service (panic), obtain sensitive information, and possibly execute arbitrary code via crafted Link Control Protocol (LCP) packets with an option length that exceeds the overall length, which triggers the overflow in (1) pppoe and (2) ippp.  NOTE: this issue was originally incorrectly reported for the ppp driver."
    },
    {
      "lang": "es",
      "value": "Desbordamiento de búfer en el controlador sppp en FreeBSD 4.11 hasta 6.1, NetBSD 2.0 hasta 4.0 beta anterior al 23/08/2006, y OpenBSD 3.8 y 3.9 anterior al 02/09/2006 permite a atacanets remotos provocar una denegación de servicio (panic), obtener información sensible, y posiblemente ejecutar código de su elección mediante paquetes LCP (Link Control Protocol) modificados con una longitud de opciones que excede la longitud total, lo que provoca un desbordamiento en (1) pppoe y (2) ippp. NOTA: este problema fue inicial e incorrectamente reportado para el controlador ppp."
    }
  ],
  "lastModified": "2026-06-16T22:28:49.183",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:4.11:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "582B9BF3-5BF1-44A3-A580-62F2D44FDD34"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:5.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D8A80E6A-6502-4A33-83BA-7DCC606D79AA"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:5.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AD85B1ED-1473-4C22-9E1E-53F07CF517E9"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:5.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7752D43D-64AF-474F-BFBB-2625A29C1B88"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:6.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1D2C79D5-D27F-4B08-A8DF-3E3AAF4E16A5"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:6.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F4416CBA-76B9-4051-B015-F1BE89517309"
            },
            {
              "criteria": "cpe:2.3:o:netbsd:netbsd:2.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A3C3F588-98DA-4F6F-A083-2B9EE534C561"
            },
            {
              "criteria": "cpe:2.3:o:netbsd:netbsd:3.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F9CABFAA-594C-45D7-A0C7-795872A0C68A"
            },
            {
              "criteria": "cpe:2.3:o:netbsd:netbsd:4.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9875E709-11BA-4B8F-A2FC-26844DD4D563"
            },
            {
              "criteria": "cpe:2.3:o:openbsd:openbsd:3.8:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "783973F9-2A6E-4DDF-A64C-7794FFD0B7B9"
            },
            {
              "criteria": "cpe:2.3:o:openbsd:openbsd:3.9:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F5BB6C5D-4C43-4BB8-B1CE-A70BBE650CA1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}