gsd-2020-17049
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
Kerberos Security Feature Bypass Vulnerability
Aliases
Aliases
CVE-2020-17049


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-17049",
    "description": "Kerberos Security Feature Bypass Vulnerability",
    "id": "GSD-2020-17049",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-17049.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-17049.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-17049"
      ],
      "details": "Kerberos Security Feature Bypass Vulnerability",
      "id": "GSD-2020-17049",
      "modified": "2023-12-13T01:21:50.302978Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secure@microsoft.com",
        "ID": "CVE-2020-17049",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Windows Server 2019",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "10.0.0",
                          "version_value": "10.0.17763.2061"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2019 (Server Core installation)",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "10.0.0",
                          "version_value": "10.0.17763.2061"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server, version 1909 (Server Core installation)",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "10.0.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server, version 1903 (Server Core installation)",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "10.0.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server version 2004",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "10.0.0",
                          "version_value": "10.0.19041.1110"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2016",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "10.0.0",
                          "version_value": "10.0.14393.4530"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2016 (Server Core installation)",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "10.0.0",
                          "version_value": "10.0.14393.4530"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2008 Service Pack 2",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "6.0.0",
                          "version_value": "6.0.6003.21167"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2008 Service Pack 2 (Server Core installation)",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "6.0.0",
                          "version_value": "6.0.6003.21167"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2008  Service Pack 2",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "6.0.0",
                          "version_value": "6.0.6003.21167"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2008 R2 Service Pack 1",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "6.1.0",
                          "version_value": "6.1.7601.25661"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2008 R2 Service Pack 1 (Server Core installation)",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "6.0.0",
                          "version_value": "6.1.7601.25661"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2012",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "6.2.0",
                          "version_value": "6.2.9200.23409"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2012 (Server Core installation)",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "6.2.0",
                          "version_value": "6.2.9200.23409"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2012 R2",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "6.3.0",
                          "version_value": "6.3.9600.20069"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server 2012 R2 (Server Core installation)",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "6.3.0",
                          "version_value": "6.3.9600.20069"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Windows Server version 20H2",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "10.0.0",
                          "version_value": "10.0.19041.1110"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Microsoft"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "\u003cp\u003eA security feature bypass vulnerability exists in the way Key Distribution Center (KDC) determines if a service ticket can be used for delegation via Kerberos Constrained Delegation (KCD).\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, a compromised service that is configured to use KCD could tamper with a service ticket that is not valid for delegation to force the KDC to accept it.\u003c/p\u003e\n\u003cp\u003eThe update addresses this vulnerability by changing how the KDC validates service tickets used with KCD.\u003c/p\u003e\n"
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "baseScore": 6.6,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Security Feature Bypass"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17049",
            "refsource": "MISC",
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17049"
          },
          {
            "name": "http://www.openwall.com/lists/oss-security/2021/11/10/3",
            "refsource": "MISC",
            "url": "http://www.openwall.com/lists/oss-security/2021/11/10/3"
          },
          {
            "name": "https://security.gentoo.org/glsa/202309-06",
            "refsource": "MISC",
            "url": "https://security.gentoo.org/glsa/202309-06"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "80EB5690-B20F-457A-A202-FBADAA17E05C",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_server_2016:20h2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "4A190388-AA82-4504-9D5A-624F23268C9F",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5B921FDB-8E7D-427E-82BE-4432585080CF",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C253A63F-03AB-41CB-A03A-B2674DEA98AA",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0B60D940-80C7-49F0-8F4E-3F99AC15FA82",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DB79EE26-FC32-417D-A49C-A1A63165A968",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "68372C1C-E091-434C-A853-8C61A92BFCDE",
                    "versionEndExcluding": "4.13.13",
                    "versionStartIncluding": "4.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F7D7145C-64C2-40D6-90CD-EA21B84AB559",
                    "versionEndExcluding": "4.14.9",
                    "versionStartIncluding": "4.14.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2688DF19-E259-4E99-B50C-DAA9318D484B",
                    "versionEndExcluding": "4.15.1",
                    "versionStartIncluding": "4.15.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "descriptions": [
          {
            "lang": "en",
            "value": "\u003cp\u003eA security feature bypass vulnerability exists in the way Key Distribution Center (KDC) determines if a service ticket can be used for delegation via Kerberos Constrained Delegation (KCD).\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, a compromised service that is configured to use KCD could tamper with a service ticket that is not valid for delegation to force the KDC to accept it.\u003c/p\u003e\n\u003cp\u003eThe update addresses this vulnerability by changing how the KDC validates service tickets used with KCD.\u003c/p\u003e\n"
          },
          {
            "lang": "es",
            "value": "Vulnerabilidad de Omisi\u00f3n de la Caracter\u00edstica de Seguridad de Kerberos"
          }
        ],
        "id": "CVE-2020-17049",
        "lastModified": "2023-12-31T19:15:22.567",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "SINGLE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 9.0,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "COMPLETE",
                "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 8.0,
              "impactScore": 10.0,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 6.6,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 0.7,
              "impactScore": 5.9,
              "source": "secure@microsoft.com",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.2,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.2,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Secondary"
            }
          ]
        },
        "published": "2020-11-11T07:15:16.543",
        "references": [
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/11/10/3"
          },
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17049"
          },
          {
            "source": "secure@microsoft.com",
            "url": "https://security.gentoo.org/glsa/202309-06"
          }
        ],
        "sourceIdentifier": "secure@microsoft.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-863"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.