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CVE-2010-4020

Estado: ModificadaMedia (6.3)—

MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations.

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-2010-4020",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 6.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2010-12-02T16:22:21.207",
  "references": [
    {
      "url": "http://kb.vmware.com/kb/1035108",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html",
      "source": "cve@mitre.org"
    },
    {
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    {
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      "source": "cve@mitre.org"
    },
    {
      "url": "http://osvdb.org/69608",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/42399",
      "tags": [
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    {
      "url": "http://support.apple.com/kb/HT4581",
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    },
    {
      "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt",
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    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2010-0925.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/514953/100/0/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/517739/100/0/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/45117",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securitytracker.com/id?1024803",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-1030-1",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/3094",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/3095",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/3118",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://kb.vmware.com/kb/1035108",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.vmware.com/pipermail/security-announce/2011/000133.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://osvdb.org/69608",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/42399",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://support.apple.com/kb/HT4581",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "http://www.redhat.com/support/errata/RHSA-2010-0925.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://www.securityfocus.com/archive/1/514953/100/0/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/517739/100/0/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/45117",
      "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"
    },
    {
      "url": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/3094",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/3095",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "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-310"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations."
    },
    {
      "lang": "es",
      "value": "MIT Kerberos 5 (también conocido como krb5) v1.8.x hasta v1.8.3 no rechaza las sumas de comprobación RC4 (clave de derivación), lo que podría permitir a usuarios remotos autenticados falsificar un (1) AD-SIGNEDPATH o (2) la firma AD-KDC-ISSUED, y posiblemente obtener privilegios, aprovechando el espacio de claves pequeñas que resultan de ciertas operaciones de cifrado de flujo de un byte (one-byte)."
    }
  ],
  "lastModified": "2026-06-16T23:23:59.700",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "36823B2B-5C72-4FF3-9301-FB263EB8CE09"
            },
            {
              "criteria": "cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "59AFA33E-FEBC-45F5-9EC6-8AA363163FB5"
            },
            {
              "criteria": "cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "04D83332-B2FD-4E86-A76C-C3F1CD3B3A31"
            },
            {
              "criteria": "cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "758A0011-20ED-414A-9DF3-50A161DF8BC2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}