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CVE-2016-2337

Estado: ModificadaCrítica (9.8)—

Type confusion exists in _cancel_eval Ruby's TclTkIp class method. Attacker passing different type of object than String as "retval" argument can cause arbitrary code execution.

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 (1)

Ruby-lang — Ruby

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2016-2337",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": true,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cret@cert.org",
      "affectedData": [
        {
          "vendor": "Ruby",
          "product": "Ruby",
          "versions": [
            {
              "status": "affected",
              "version": "2.3.0 dev"
            },
            {
              "status": "affected",
              "version": "2.2.2"
            }
          ]
        },
        {
          "vendor": "Tcl",
          "product": "Tcl/Tk",
          "versions": [
            {
              "status": "affected",
              "version": "8.6 or later"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-01-06T21:59:00.460",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/91233",
      "source": "cret@cert.org"
    },
    {
      "url": "http://www.talosintelligence.com/reports/TALOS-2016-0031/",
      "tags": [
        "Exploit",
        "Technical Description",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cret@cert.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00028.html",
      "source": "cret@cert.org"
    },
    {
      "url": "https://security.gentoo.org/glsa/201710-18",
      "source": "cret@cert.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/91233",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.talosintelligence.com/reports/TALOS-2016-0031/",
      "tags": [
        "Exploit",
        "Technical Description",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00028.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/201710-18",
      "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": "Type confusion exists in _cancel_eval Ruby's TclTkIp class method. Attacker passing different type of object than String as \"retval\" argument can cause arbitrary code execution."
    },
    {
      "lang": "es",
      "value": "Existe un tipo de confusión en el método de clase _cancel_eval Ruby's TclTkIp. El atacante que pasa un tipo diferente de objeto que una String como argumento \"retval\" puede provocar la ejecución de código arbitrario."
    }
  ],
  "lastModified": "2026-06-17T00:43:50.917",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ruby-lang:ruby:2.2.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5FCCD8F3-E667-42F2-9861-14EDFB16583A"
            },
            {
              "criteria": "cpe:2.3:a:ruby-lang:ruby:2.3.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "822307DD-7F7D-44C2-9C4B-CB8704663410"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/843.html\">CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')</a>",
  "sourceIdentifier": "cret@cert.org"
}