FKIE_CVE-2003-0795

Vulnerability from fkie_nvd - Published: 2003-12-15 05:00 - Updated: 2026-06-16 22:02
Severity
Summary
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.
References
cve@mitre.orghttp://marc.info/?l=bugtraq&m=106883387304266&w=2
cve@mitre.orghttp://secunia.com/advisories/10563Vendor Advisory
cve@mitre.orghttp://www.debian.org/security/2004/dsa-415Patch, Vendor Advisory
cve@mitre.orghttp://www.redhat.com/support/errata/RHSA-2003-305.htmlPatch, Vendor Advisory
cve@mitre.orghttp://www.redhat.com/support/errata/RHSA-2003-307.htmlPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=106883387304266&w=2
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/10563Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2004/dsa-415Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.redhat.com/support/errata/RHSA-2003-305.htmlPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.redhat.com/support/errata/RHSA-2003-307.htmlPatch, Vendor Advisory
Impacted products
Vendor Product Version
gnu zebra 0.91a
gnu zebra 0.92a
gnu zebra 0.93a
gnu zebra 0.93b
quagga quagga *
quagga quagga 0.95
quagga quagga 0.96
quagga quagga 0.96.1
quagga quagga 0.96.2
sgi propack 2.2.1
sgi propack 2.3
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gnu:zebra:0.91a:*:*:*:*:*:*:*",
              "matchCriteriaId": "B4422632-71AE-4E7F-8684-EC63F9B05F50",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:gnu:zebra:0.92a:*:*:*:*:*:*:*",
              "matchCriteriaId": "06039EBD-0C90-42C9-B182-9A59A7A3075A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:gnu:zebra:0.93a:*:*:*:*:*:*:*",
              "matchCriteriaId": "01D1D224-8BD6-46AD-AA75-5457A2E007A0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:gnu:zebra:0.93b:*:*:*:*:*:*:*",
              "matchCriteriaId": "FDEEAC68-6442-4E82-B072-491ED94EE6D9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:quagga:quagga:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1115C0CE-AA9B-4B11-A2D5-6F5F5ED043E1",
              "versionEndIncluding": "0.96.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:quagga:quagga:0.95:*:*:*:*:*:*:*",
              "matchCriteriaId": "CD7A8AD5-A315-4242-960C-05E792B30547",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:quagga:quagga:0.96:*:*:*:*:*:*:*",
              "matchCriteriaId": "6B83BCE2-24D0-4B5B-A034-62BFF1894AE2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:quagga:quagga:0.96.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "FDD63DD9-1809-4CEC-AB69-955A7B127CA8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:quagga:quagga:0.96.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "0A2AD1AD-DDE2-477B-8EFD-767B6FD8EDBB",
              "vulnerable": true
            },
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              "criteria": "cpe:2.3:a:sgi:propack:2.2.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "8AB7B969-1093-46A9-AA8D-0C28F138C4D9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sgi:propack:2.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "26430687-409B-448F-934B-06AB937DDF63",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "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 est\u00e1 llevando a cabo una sub-negociaci\u00f3n cuando procesa el marcador SE, lo que permite a atacantes remotos causar una denegaci\u00f3n de servicio (ca\u00edda) mediante un comando telnet malformado al puerto telnet CLI, lo que puede disparar una desreferencia de memoria nula."
    }
  ],
  "id": "CVE-2003-0795",
  "lastModified": "2026-06-16T22:02:51.250",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2003-12-15T05:00:00.000",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://marc.info/?l=bugtraq\u0026m=106883387304266\u0026w=2"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/10563"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.debian.org/security/2004/dsa-415"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.redhat.com/support/errata/RHSA-2003-305.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.redhat.com/support/errata/RHSA-2003-307.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://marc.info/?l=bugtraq\u0026m=106883387304266\u0026w=2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/10563"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.debian.org/security/2004/dsa-415"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.redhat.com/support/errata/RHSA-2003-305.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.redhat.com/support/errata/RHSA-2003-307.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Sightings

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