FKIE_CVE-2018-6948

Vulnerability from fkie_nvd - Published: 2018-02-13 17:29 - Updated: 2026-06-17 02:02
Severity
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In CCN-lite 2, the function ccnl_prefix_to_str_detailed can cause a buffer overflow, when writing a prefix to the buffer buf. The maximal size of the prefix is CCNL_MAX_PREFIX_SIZE; the buffer has the size CCNL_MAX_PREFIX_SIZE. However, when NFN is enabled, additional characters are written to the buffer (e.g., the "NFN" and "R2C" tags). Therefore, sending an NFN-R2C packet with a prefix of size CCNL_MAX_PREFIX_SIZE can cause an overflow of buf inside ccnl_prefix_to_str_detailed.
References
cve@mitre.orghttps://github.com/cn-uofbasel/ccn-lite/issues/193Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/cn-uofbasel/ccn-lite/issues/193Third Party Advisory
Impacted products
Vendor Product Version
ccn-lite ccn-lite 2.0.0
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:ccn-lite:ccn-lite:2.0.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "83C4FA31-E39A-4AE2-8F60-BBC51D874467",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In CCN-lite 2, the function ccnl_prefix_to_str_detailed can cause a buffer overflow, when writing a prefix to the buffer buf. The maximal size of the prefix is CCNL_MAX_PREFIX_SIZE; the buffer has the size CCNL_MAX_PREFIX_SIZE. However, when NFN is enabled, additional characters are written to the buffer (e.g., the \"NFN\" and \"R2C\" tags). Therefore, sending an NFN-R2C packet with a prefix of size CCNL_MAX_PREFIX_SIZE can cause an overflow of buf inside ccnl_prefix_to_str_detailed."
    },
    {
      "lang": "es",
      "value": "En CCN-lite 2, la funci\u00f3n ccnl_prefix_to_str_detailed puede provocar un desbordamiento de b\u00fafer al escribir un prefijo en el b\u00fafer buf. El tama\u00f1o m\u00e1ximo del prefijo es CCNL_MAX_PREFIX_SIZE; el b\u00fafer tiene el tama\u00f1o CCNL_MAX_PREFIX_SIZE. Sin embargo, cuando NFN est\u00e1 habilitado, se escriben caracteres adicionales en el b\u00fafer (por ejemplo, las etiquetas \"NFN\" y \"R2C\"). Por lo tanto, el env\u00edo de un paquete NFN-R2C con un prefijo de tama\u00f1o CCNL_MAX_PREFIX_SIZE puede provocar un desbordamiento de buf en ccnl_prefix_to_str_detailed."
    }
  ],
  "id": "CVE-2018-6948",
  "lastModified": "2026-06-17T02:02:29.987",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": true,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2018-02-13T17:29:00.250",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/cn-uofbasel/ccn-lite/issues/193"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://github.com/cn-uofbasel/ccn-lite/issues/193"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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