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CVE-2010-4021 (GCVE-0-2010-4021)

Vulnerability from cvelistv5 – Published: 2010-12-02 16:00 – Updated: 2024-08-07 03:26
VLAI
Summary
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."
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
Date Public
2010-11-30 00:00
Show details on NVD website
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        {
          "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"
        },
        {
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          "url": "http://www.vupen.com/english/advisories/2010/3094"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.vupen.com/english/advisories/2010/3118"
        }
      ],
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-16"
            },
            {
              "lang": "en",
              "value": "CWE-264"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:mit:kerberos_5:1.7:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DFB1190E-BE7A-4C6B-862D-D5747C64E980",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "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 distribuci\u00f3n de claves (KDC) en MIT Kerberos 5 (tambi\u00e9n conocido como krb5) v1.7 no restringe correctamente el uso de credenciales TGT para proteger solicitudes  TGS, lo que podr\u00eda permitir a usuarios remotos autenticados suplantar a un cliente mediante la reescritura de una solicitud interior, tambi\u00e9n conocido como \" falsificaci\u00f3n KrbFastReq\""
          }
        ],
        "id": "CVE-2010-4021",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "LOW",
              "cvssData": {
                "accessComplexity": "HIGH",
                "accessVector": "NETWORK",
                "authentication": "SINGLE",
                "availabilityImpact": "NONE",
                "baseScore": 2.1,
                "confidentialityImpact": "NONE",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:H/Au:S/C:N/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2010-12-02T16:22:21.240",
        "references": [
          {
            "source": "cve@mitre.org",
            "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.opensuse.org/opensuse-security-announce/2010-12/msg00000.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.vmware.com/pipermail/security-announce/2011/000133.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://osvdb.org/69607"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://support.apple.com/kb/HT4581"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246"
          },
          {
            "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/45122"
          },
          {
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            "url": "http://www.securitytracker.com/id?1024803"
          },
          {
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            "url": "http://www.ubuntu.com/usn/USN-1030-1"
          },
          {
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            "url": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.vupen.com/english/advisories/2010/3094"
          },
          {
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          },
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            "url": "http://kb.vmware.com/kb/1035108"
          },
          {
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            "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.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/69607"
          },
          {
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            "url": "http://support.apple.com/kb/HT4581"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
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            "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt"
          },
          {
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          },
          {
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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"
          },
          {
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            "url": "http://www.securityfocus.com/bid/45122"
          },
          {
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            "url": "http://www.securitytracker.com/id?1024803"
          },
          {
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            "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/2010/3118"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-16"
              },
              {
                "lang": "en",
                "value": "CWE-264"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-11-21T13:01:11+00:00",
      "cve": "CVE-2010-4021",
      "id": "CVE-2010-4021",
      "initial_release_date": "2010-11-30T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "krb5: KDC may issue unrequested tickets due to KrbFastReq forgery (MITKRB5-SA-2010-007)",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2010/cve-2010-4021.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-27T02:14:26Z",
      "cve": "CVE-2010-4021",
      "id": "CVE-2010-4021",
      "initial_release_date": "2023-02-15T05:56:18Z",
      "product_status:recommended": "248",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2010-4021",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2010-4021.json",
      "version": "19"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.