Foxit Cloud Update Service – Unquoted Service Path Privilege Escalation
Foxit Cloud Update Service: https://www.foxitsoftware.com By Ross Marks: http://www.rossmarks.co.uk Exploit-db: https://www.exploit-db.com/author/?a=8724 Category: Local Tested on: Windows 10 x86/x64 1) Unquoted Service Path Privilege Escalation Foxit reader's "cloud safe update service" installs as a service with an unquoted service path running with SYSTEM privileges. This could potentially allow an authorized but non-privileged localuser to execute arbitrary code with elevated privileges on the system. A successful attempt would require the local attacker must insert an executable file in the path of the service. Upon service restart or system reboot, the malicious code will be run with elevated privileges. PoC: C:\>sc qc FoxitCloudUpdateService [SC] QueryServiceConfig SUCCESS SERVICE_NAME: FoxitCloudUpdateService TYPE : 10 WIN32_OWN_PROCESS START_TYPE : 2 AUTO_START ERROR_CONTROL : 1 NORMAL BINARY_PATH_NAME : C:\Program Files (x86)\FOXIT SOFTWARE\FOXIT READER\Foxit Cloud\FCUpdateService.exe LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : Foxit Cloud Safe Update Service DEPENDENCIES : SERVICE_START_NAME : LocalSystem |