certfr_avis - certfr-2021-avi-575

CERTFR-2021-AVI-575

Vulnerability from certfr_avis

Une vulnérabilité a été découverte dans Microsoft Windows. Elle permet à un attaquant de provoquer une élévation de privilèges.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None

Impacted products

Vendor	Product	Description
Microsoft	Windows	Windows 10 version 21H1 pour systèmes ARM64
Microsoft	Windows	Windows 10 version 2004 pour systèmes 32 bits
Microsoft	Windows	Windows Server 2019 (Server Core installation)
Microsoft	Windows	Windows Server 2019
Microsoft	Windows	Windows 10 version 20H2 pour systèmes ARM64
Microsoft	Windows	Windows 10 version 2004 pour systèmes ARM64
Microsoft	Windows	Windows 10 version 1809 pour systèmes 32 bits
Microsoft	Windows	Windows 10 version 1909 pour systèmes ARM64
Microsoft	Windows	Windows 10 version 1809 pour systèmes x64
Microsoft	Windows	Windows 10 version 1909 pour systèmes 32 bits
Microsoft	Windows	Windows 10 version 21H1 pour systèmes 32 bits
Microsoft	Windows	Windows 10 version 21H1 pour systèmes x64
Microsoft	Windows	Windows 10 version 1909 pour systèmes x64
Microsoft	Windows	Windows 10 version 20H2 pour systèmes x64
Microsoft	Windows	Windows 10 version 1809 pour systèmes ARM64
Microsoft	Windows	Windows 10 version 20H2 pour systèmes 32 bits
Microsoft	Windows	Windows 10 version 2004 pour systèmes x64
Microsoft	Windows	Windows Server version 2004 (Server Core installation)

References

Title

Publication Time

Tags

Bulletin d'actualité CERT-FR CERTFR-2021-ACT-031 du 23 juillet 2021	None	vendor-advisory
Bulletin de sécurité Microsoft CVE-2021-36934 du 20 juillet 2021	None	vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Windows 10 version 21H1 pour syst\u00e8mes ARM64",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 2004 pour syst\u00e8mes 32 bits",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows Server 2019 (Server Core installation)",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows Server 2019",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 20H2 pour syst\u00e8mes ARM64",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 2004 pour syst\u00e8mes ARM64",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 1809 pour syst\u00e8mes 32 bits",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 1909 pour syst\u00e8mes ARM64",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 1809 pour syst\u00e8mes x64",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 1909 pour syst\u00e8mes 32 bits",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 21H1 pour syst\u00e8mes 32 bits",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 21H1 pour syst\u00e8mes x64",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 1909 pour syst\u00e8mes x64",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 20H2 pour syst\u00e8mes x64",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 1809 pour syst\u00e8mes ARM64",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 20H2 pour syst\u00e8mes 32 bits",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows 10 version 2004 pour syst\u00e8mes x64",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Windows Server version 2004 (Server Core installation)",
      "product": {
        "name": "Windows",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2021-36934",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-36934"
    }
  ],
  "initial_release_date": "2021-07-26T00:00:00",
  "last_revision_date": "2021-07-26T00:00:00",
  "links": [],
  "reference": "CERTFR-2021-AVI-575",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2021-07-26T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Microsoft Windows. Elle permet \u00e0\nun attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges.\n",
  "title": "Vuln\u00e9rabilit\u00e9 dans Microsoft Windows",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin d\u0027actualit\u00e9 CERT-FR CERTFR-2021-ACT-031 du 23 juillet 2021",
      "url": "https://www.cert.ssi.gouv.fr/actualite/CERTFR-2021-ACT-031/"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2021-36934 du 20 juillet 2021",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36934"
    }
  ]
}

CVE-2021-36934 (GCVE-0-2021-36934)

Vulnerability from cvelistv5

Published

2021-07-22 07:05

Modified

2025-10-21 23:25

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:T/RC:C

CWE

Elevation of Privilege

Summary

An elevation of privilege vulnerability exists because of overly permissive Access Control Lists (ACLs) on multiple system files, including the Security Accounts Manager (SAM) database. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. An attacker must have the ability to execute code on a victim system to exploit this vulnerability. After installing this security update, you must manually delete all shadow copies of system files, including the SAM database, to fully mitigate this vulnerabilty. Simply installing this security update will not fully mitigate this vulnerability. See <a href="https://support.microsoft.com/topic/1ceaa637-aaa3-4b58-a48b-baf72a2fa9e7">KB5005357- Delete Volume Shadow Copies</a>.

References

URL

Tags

	https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36934	x_refsource_MISC
	http://packetstormsecurity.com/files/164006/HiveNightmare-AKA-SeriousSAM.html	x_refsource_MISC

Impacted products

Vendor

Product

Version

Microsoft

Windows 10 Version 1809

Version: 10.0.0 < 10.0.17763.2114
 cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2114:*:*:*:*:*:x86:*
 cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2114:*:*:*:*:*:x64:*
 cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2114:*:*:*:*:*:arm64:*

Microsoft	Windows 10 Version 1909	Version: 10.0.0 < 10.0.18363.1734 cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1734::::::x86: cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1734::::::x64: cpe:2.3:o:microsoft:windows_10_1809:10.0.18363.1734::::::x64:
Microsoft	Windows 10 Version 21H1	Version: 10.0.0 < 10.0.19043.1165 cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1165::::::x64: cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1165::::::arm64: cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1165::::::x86:
Microsoft	Windows 10 Version 2004	Version: 10.0.0 < 10.0.19041.1165 cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1165::::::x64:
Microsoft	Windows 10 Version 20H2	Version: 10.0.0 < 10.0.19042.1165 cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1165::::::x86: cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1165::::::arm64:

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:09:06.213Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.kb.cert.org/vuls/id/506989"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36934"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/164006/HiveNightmare-AKA-SeriousSAM.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-36934",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-04T18:15:10.079347Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2022-02-10",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36934"
              },
              "type": "kev"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-21T23:25:40.056Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36934"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2022-02-10T00:00:00+00:00",
            "value": "CVE-2021-36934 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2114:*:*:*:*:*:x86:*",
            "cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2114:*:*:*:*:*:x64:*",
            "cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2114:*:*:*:*:*:arm64:*"
          ],
          "platforms": [
            "32-bit Systems",
            "x64-based Systems",
            "ARM64-based Systems"
          ],
          "product": "Windows 10 Version 1809",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "10.0.17763.2114",
              "status": "affected",
              "version": "10.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1734:*:*:*:*:*:x86:*",
            "cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1734:*:*:*:*:*:x64:*",
            "cpe:2.3:o:microsoft:windows_10_1809:10.0.18363.1734:*:*:*:*:*:x64:*"
          ],
          "platforms": [
            "32-bit Systems",
            "x64-based Systems",
            "ARM64-based Systems"
          ],
          "product": "Windows 10 Version 1909",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "10.0.18363.1734",
              "status": "affected",
              "version": "10.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1165:*:*:*:*:*:x64:*",
            "cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1165:*:*:*:*:*:arm64:*",
            "cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1165:*:*:*:*:*:x86:*"
          ],
          "platforms": [
            "x64-based Systems",
            "ARM64-based Systems",
            "32-bit Systems"
          ],
          "product": "Windows 10 Version 21H1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "10.0.19043.1165",
              "status": "affected",
              "version": "10.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1165:*:*:*:*:*:x64:*"
          ],
          "platforms": [
            "32-bit Systems",
            "ARM64-based Systems",
            "x64-based Systems"
          ],
          "product": "Windows 10 Version 2004",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "10.0.19041.1165",
              "status": "affected",
              "version": "10.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1165:*:*:*:*:*:x86:*",
            "cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1165:*:*:*:*:*:arm64:*"
          ],
          "platforms": [
            "32-bit Systems",
            "ARM64-based Systems"
          ],
          "product": "Windows 10 Version 20H2",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "10.0.19042.1165",
              "status": "affected",
              "version": "10.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-07-20T07:00:00.000Z",
      "descriptions": [
        {
          "lang": "en-US",
          "value": "\u003cp\u003eAn elevation of privilege vulnerability exists because of overly permissive Access Control Lists (ACLs) on multiple system files, including the Security Accounts Manager (SAM) database. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.\u003c/p\u003e\n\u003cp\u003eAn attacker must have the ability to execute code on a victim system to exploit this vulnerability.\u003c/p\u003e\n\u003cp\u003eAfter installing this security update, you \u003cem\u003emust\u003c/em\u003e manually delete all shadow copies of system files, including the SAM database, to fully mitigate this vulnerabilty. \u003cstrong\u003eSimply installing this security update will not fully mitigate this vulnerability.\u003c/strong\u003e See \u003ca href=\"https://support.microsoft.com/topic/1ceaa637-aaa3-4b58-a48b-baf72a2fa9e7\"\u003eKB5005357- Delete Volume Shadow Copies\u003c/a\u003e.\u003c/p\u003e\n"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:T/RC:C",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Elevation of Privilege",
              "lang": "en-US",
              "type": "Impact"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-12-28T22:36:47.285Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36934"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://packetstormsecurity.com/files/164006/HiveNightmare-AKA-SeriousSAM.html"
        }
      ],
      "title": "Windows Elevation of Privilege Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2021-36934",
    "datePublished": "2021-07-22T07:05:12.000Z",
    "dateReserved": "2021-07-19T00:00:00.000Z",
    "dateUpdated": "2025-10-21T23:25:40.056Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Action not permitted

CERTFR-2021-AVI-575

Vulnerability from certfr_avis

Solution

CVE-2021-36934 (GCVE-0-2021-36934)

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature