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Privacyware Privatefirewall 7.0 Unquoted Service Path Privilege Escalation

Low
Advisory ID
ZSL-2014-5209
Release Date
21 November 2014
Vendor
Affected Version
7.0.30.3
CVE
N/A
Tested On
Microsoft Windows 7 Professional SP1 (EN), Microsoft Windows 7 Ultimate SP1 (EN)
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.

Description

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.

Proof of Concept
Disclosure Timeline
09.11.2014Vulnerability discovered.
12.11.2014Vendor contacted.
20.11.2014No response from the vendor.
21.11.2014Public security advisory released.
Credits
Vulnerability discovered by Gjoko Krstic
References
Changelog
21.11.2014Initial release
22.11.2014Added reference [1], [2] and [3]
24.11.2014Added reference [4]
25.11.2014Added reference [5] and [6]