Privacyware Privatefirewall 7.0 Privilege Escalation

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Privacyware Privatefirewall 7.0 Unquoted Service Path Privilege Escalation  
  
  
Vendor: PWI, Inc.  
Product web page: http://www.privacyware.com  
Affected version: 7.0.30.3  
  
  
Summary: Privatefirewall multi-layered endpoint security software protects  
32 and 64 bit Windows desktops and servers from malware and unauthorized use.  
Personal firewall, packet inspection, URL filtering, anti-logger, process  
monitor, and application/system behavior modeling and anomaly detection  
components stop hackers, spyware, viruses and other forms of malware before  
they can cause damage.  
  
Desc: Privatefirewall suffers from an unquoted search path issue impacting  
the Core Service 'PFNet' service for Windows deployed as part of Privatefirewall  
bundle. This could potentially allow an authorized but non-privileged local  
user to execute arbitrary code with elevated privileges on the system. 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.  
  
Tested on: Microsoft Windows 7 Professional SP1 (EN)  
Microsoft Windows 7 Ultimate SP1 (EN)  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2014-5209  
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2014-5209.php  
  
  
09.11.2014  
  
---  
  
  
C:\Users\user>sc qc PFNet  
[SC] QueryServiceConfig SUCCESS  
  
SERVICE_NAME: PFNet  
TYPE : 10 WIN32_OWN_PROCESS  
START_TYPE : 2 AUTO_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : C:\Program Files (x86)\Privacyware\Privatefirewall 7.0\pfsvc.exe  
LOAD_ORDER_GROUP : TDI  
TAG : 0  
DISPLAY_NAME : Privacyware network service  
DEPENDENCIES : RpcSs  
SERVICE_START_NAME : LocalSystem  
  
  
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C:\Users\user>icacls "C:\Program Files (x86)\Privacyware\Privatefirewall 7.0\pfsvc.exe"  
C:\Program Files (x86)\Privacyware\Privatefirewall 7.0\pfsvc.exe NT AUTHORITY\SYSTEM:(I)(F)  
BUILTIN\Administrators:(I)(F)  
BUILTIN\Users:(I)(RX)  
  
Successfully processed 1 files; Failed processing 0 files  
  
  
--  
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