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[email protected]CVE-2021-36934

HistoryJul 22, 2021 - 7:15 a.m.

CVE-2021-36934

2021-07-2207:15:11

[email protected]

web.nvd.nist.gov

1052

In Wild

windows

elevation of privilege

vulnerability

cve-2021-36934

nvd

4.6 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

70.2%

JSON

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>.

Affected configurations

Vulners

NVD

Node

microsoftwindows_10_1809Range10.0.0–10.0.17763.2114

microsoftwindows_10_1909Range10.0.0–10.0.18363.1734

microsoftwindows_10_21h1Range10.0.0–10.0.19043.1165

microsoftwindows_10_2004Range10.0.0–10.0.19041.1165

microsoftwindows_10_20h2Range10.0.0–10.0.19042.1165

VendorProductVersionCPE
microsoftwindows_10_1809*cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*
microsoftwindows_10_1909*cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*
microsoftwindows_10_21h1*cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*
microsoftwindows_10_2004*cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*
microsoftwindows_10_20h2*cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
microsoft	windows_10_1809	*	cpe:2.3:o:microsoft:windows_10_1809::::::::
microsoft	windows_10_1909	*	cpe:2.3:o:microsoft:windows_10_1909::::::::
microsoft	windows_10_21h1	*	cpe:2.3:o:microsoft:windows_10_21h1::::::::
microsoft	windows_10_2004	*	cpe:2.3:o:microsoft:windows_10_2004::::::::
microsoft	windows_10_20h2	*	cpe:2.3:o:microsoft:windows_10_20h2::::::::

CNA Affected

[
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 1809",
    "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"
    ],
    "versions": [
      {
        "version": "10.0.0",
        "lessThan": "10.0.17763.2114",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 1909",
    "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"
    ],
    "versions": [
      {
        "version": "10.0.0",
        "lessThan": "10.0.18363.1734",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 21H1",
    "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"
    ],
    "versions": [
      {
        "version": "10.0.0",
        "lessThan": "10.0.19043.1165",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 2004",
    "cpes": [
      "cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1165:*:*:*:*:*:x64:*"
    ],
    "platforms": [
      "32-bit Systems",
      "ARM64-based Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.0",
        "lessThan": "10.0.19041.1165",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 20H2",
    "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"
    ],
    "versions": [
      {
        "version": "10.0.0",
        "lessThan": "10.0.19042.1165",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  }
]