9.3

CVE-2021-31956

Warnung

Windows NTFS Elevation of Privilege Vulnerability

Windows NTFS Elevation of Privilege Vulnerability
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Windows 10 1507 Version < 10.0.10240.18967
Microsoft ≫ Windows 10 1607 Version < 10.0.14393.4467
Microsoft ≫ Windows 10 1809 Version < 10.0.17763.1999
Microsoft ≫ Windows 10 1909 Version < 10.0.18363.1621
Microsoft ≫ Windows 10 2004 Version < 10.0.19041.1052
Microsoft ≫ Windows 10 20h2 Version < 10.0.19042.1052
Microsoft ≫ Windows 10 21h1 Version < 10.0.19043.1052
Microsoft ≫ Windows 7 Version - Update sp1
Microsoft ≫ Windows 8.1 Version -
Microsoft ≫ Windows Rt 8.1 Version -
Microsoft ≫ Windows Server 2004 Version < 10.0.19041.1052
Microsoft ≫ Windows Server 2008 Version r2 Update sp1 HwPlatform x64
Microsoft ≫ Windows Server 2008 Version sp2
Microsoft ≫ Windows Server 2016 Version < 10.0.14393.4467
Microsoft ≫ Windows Server 2019 Version < 10.0.17763.1999
Microsoft ≫ Windows Server 20h2 Version < 10.0.19042.1052

03.11.2021: CISA Known Exploited Vulnerabilities (KEV) Catalog

Microsoft Windows NTFS Privilege Escalation Vulnerability

Schwachstelle

Microsoft Windows New Technology File System (NTFS) contains an unspecified vulnerability that allows attackers to escalate privileges via a specially crafted application.

Beschreibung

Apply updates per vendor instructions.

Erforderliche Maßnahmen
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 20.27% 0.972
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 9.3 8.6 10
AV:N/AC:M/Au:N/C:C/I:C/A:C
NIST 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Microsoft 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-191 Integer Underflow (Wrap or Wraparound)

The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31956
Patch
Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31956
US Government Resource