« Volver al listado

CVE-2003-0795

Estado: ModificadaMedia (5)—

The vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is taking place when processing the SE marker, which allows remote attackers to cause a denial of service (crash) via a malformed telnet command to the telnet CLI port, which may trigger a null dereference.

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 (3)

GNU — ZebraQuagga — QuaggaSGI — Propack

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2003-0795",
  "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:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "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": "2003-12-15T05:00:00.000",
  "references": [
    {
      "url": "http://marc.info/?l=bugtraq&m=106883387304266&w=2",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/10563",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2004/dsa-415",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-305.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-307.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://marc.info/?l=bugtraq&m=106883387304266&w=2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/10563",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2004/dsa-415",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-305.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-307.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is taking place when processing the SE marker, which allows remote attackers to cause a denial of service (crash) via a malformed telnet command to the telnet CLI port, which may trigger a null dereference."
    },
    {
      "lang": "es",
      "value": "La capa vty en Quagga anteriores a 0.96.4, y Zebra anteriores a 0.91, no verifica si se está llevando a cabo una sub-negociación cuando procesa el marcador SE, lo que permite a atacantes remotos causar una denegación de servicio (caída) mediante un comando telnet malformado al puerto telnet CLI, lo que puede disparar una desreferencia de memoria nula."
    }
  ],
  "lastModified": "2026-06-16T22:02:51.250",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gnu:zebra:0.91a:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B4422632-71AE-4E7F-8684-EC63F9B05F50"
            },
            {
              "criteria": "cpe:2.3:a:gnu:zebra:0.92a:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "06039EBD-0C90-42C9-B182-9A59A7A3075A"
            },
            {
              "criteria": "cpe:2.3:a:gnu:zebra:0.93a:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "01D1D224-8BD6-46AD-AA75-5457A2E007A0"
            },
            {
              "criteria": "cpe:2.3:a:gnu:zebra:0.93b:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FDEEAC68-6442-4E82-B072-491ED94EE6D9"
            },
            {
              "criteria": "cpe:2.3:a:quagga:quagga:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1115C0CE-AA9B-4B11-A2D5-6F5F5ED043E1",
              "versionEndIncluding": "0.96.3"
            },
            {
              "criteria": "cpe:2.3:a:quagga:quagga:0.95:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CD7A8AD5-A315-4242-960C-05E792B30547"
            },
            {
              "criteria": "cpe:2.3:a:quagga:quagga:0.96:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6B83BCE2-24D0-4B5B-A034-62BFF1894AE2"
            },
            {
              "criteria": "cpe:2.3:a:quagga:quagga:0.96.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FDD63DD9-1809-4CEC-AB69-955A7B127CA8"
            },
            {
              "criteria": "cpe:2.3:a:quagga:quagga:0.96.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0A2AD1AD-DDE2-477B-8EFD-767B6FD8EDBB"
            },
            {
              "criteria": "cpe:2.3:a:sgi:propack:2.2.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8AB7B969-1093-46A9-AA8D-0C28F138C4D9"
            },
            {
              "criteria": "cpe:2.3:a:sgi:propack:2.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "26430687-409B-448F-934B-06AB937DDF63"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}