HiveNightmare Windows 11 Elevation of Privilege Vulnerability and workaround

Romagnolo1973

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  • Operating System
    Windows 11 Home
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    Huawei Matebook D 14" 2018
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    AMD Ryzen 5 2500U

abactuon

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PS E:\Temp> if ((get-acl C:\windows\system32\config\sam).Access | ? IdentityReference -match 'BUILTIN\\Users' | select -expandproperty filesystemrights | select-string 'Read'){write-host "SAM maybe VULN" }else { write-host "SAM NOT vuln"}
SAM maybe VULN
...
PS E:\Temp> if ((get-acl C:\windows\system32\config\sam).Access | ? IdentityReference -match 'BUILTIN\\Users' | select -expandproperty filesystemrights | select-string 'Read'){write-host "SAM maybe VULN" }else { write-host "SAM NOT vuln"}
SAM NOT vuln
 

My Computer

System One

  • Operating System
    Microsoft Windows 10 Home (x64)
    Computer type
    Laptop
    Manufacturer/Model
    MSI GF65 Thin 9SD
    CPU
    Intel Core i5-9300H
    Motherboard
    MSI MS-16W1
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    2 x Kingston KHX2666C15S4/16G
    Graphics Card(s)
    GeForce GTX 1660 Ti
    Sound Card
    Intel Cannon Lake-H/S - cAVS
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    AU Optronics B156HAN13.0
    Screen Resolution
    1920 x 1080
    Hard Drives
    1. Noname 128GB SSD
    2. SAMSUNG MZVLB512HAJQ
    PSU
    180W
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    HP USB Fingerprint Mouse
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Brink

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    Windows 11 Pro for Workstations
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    PC/Desktop
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    Custom self build
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    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
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    16 GB (8GBx2) G.SKILL TridentZ DDR4 3200 MHz
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    Windows 11 Pro for Workstations
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    HP Spectre x360 2in1
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    i7-1065G7 3.9 GHz
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    16 GB LPDDR4-3200
    Graphics card(s)
    Intel Iris Plus
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    Intel SST
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    13.3" 4K UWVA AMOLED multitouch
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    512 GB PCIe NVMe M.2 SSD
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    Google Chrome
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    Windows Defender and Malwarebytes Premium

abactuon

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# Disable System Restore for system drive
Disable-ComputerRestore -Drive "$env:SystemDrive"
 

My Computer

System One

  • Operating System
    Microsoft Windows 10 Home (x64)
    Computer type
    Laptop
    Manufacturer/Model
    MSI GF65 Thin 9SD
    CPU
    Intel Core i5-9300H
    Motherboard
    MSI MS-16W1
    Memory
    2 x Kingston KHX2666C15S4/16G
    Graphics Card(s)
    GeForce GTX 1660 Ti
    Sound Card
    Intel Cannon Lake-H/S - cAVS
    Monitor(s) Displays
    AU Optronics B156HAN13.0
    Screen Resolution
    1920 x 1080
    Hard Drives
    1. Noname 128GB SSD
    2. SAMSUNG MZVLB512HAJQ
    PSU
    180W
    Mouse
    HP USB Fingerprint Mouse
    Internet Speed
    50 Mbps
    Browser
    Firefox
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