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CVE-2010-4021

Estado: ModificadaBaja (2.1)—

The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a "KrbFastReq forgery issue."

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)

MIT — Kerberos 5

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2010-4021",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "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": "2010-12-02T16:22:21.240",
  "references": [
    {
      "url": "http://kb.vmware.com/kb/1035108",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html",
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    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html",
      "source": "cve@mitre.org"
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    {
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    {
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    {
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    },
    {
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      "tags": [
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    {
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    {
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    {
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://support.apple.com/kb/HT4581",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "tags": [
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    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/45122",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1024803",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-1030-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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    },
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      "url": "http://www.vupen.com/english/advisories/2010/3118",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-16"
        },
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a \"KrbFastReq forgery issue.\""
    },
    {
      "lang": "es",
      "value": "El Centro de distribución de claves (KDC) en MIT Kerberos 5 (también conocido como krb5) v1.7 no restringe correctamente el uso de credenciales TGT para proteger solicitudes  TGS, lo que podría permitir a usuarios remotos autenticados suplantar a un cliente mediante la reescritura de una solicitud interior, también conocido como \" falsificación KrbFastReq\""
    }
  ],
  "lastModified": "2026-06-16T23:23:59.903",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mit:kerberos_5:1.7:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DFB1190E-BE7A-4C6B-862D-D5747C64E980"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}