Realtek Wireless LAN Utility 700.1631 Unquoted Service Path ≈ Packet Storm – Digitalmunition




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Published on March 17th, 2021 📆 | 1858 Views ⚑

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Realtek Wireless LAN Utility 700.1631 Unquoted Service Path ≈ Packet Storm

# Exploit Title: Realtek Wireless LAN Utility 700.1631 – ‘Realtek11nSU’ Unquoted Service Path
# Discovery by: Luis Martinez
# Discovery Date: 2021-03-14
# Vendor Homepage: https://www.realtek.com/en/
# Tested Version: 700.1631
# Vulnerability Type: Unquoted Service Path
# Tested on OS: Windows 10 Pro x64 es

# Step to discover Unquoted Service Path:

C:>wmic service get name, pathname, displayname, startmode | findstr /i “Auto” | findstr /i /v “C:Windows\” | findstr /i “Realtek” | findstr /i /v “””

Realtek11nSU Realtek11nSU C:Program Files (x86)RealtekWireless LAN UtilityRtlService.exe Auto

# Service info:

C:>sc qc “Realtek11nSU”
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: Realtek11nSU
TYPE : 110 WIN32_OWN_PROCESS (interactive)
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:Program Files (x86)RealtekWireless LAN UtilityRtlService.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Realtek11nSU
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem

#Exploit:

A successful attempt would require the local user to be able to insert their code in the system root path undetected by the OS or other security applications where it could potentially be executed during application startup or reboot. If successful, the local user’s code would execute with the elevated privileges of the application.

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