Totalav 2020 4.14.31 privilege escalation Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2020-01-10 | Type : local | Platform : windows
This exploit / vulnerability Totalav 2020 4.14.31 privilege escalation is for educational purposes only and if it is used you will do on your own risk!

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# Exploit Title: TotalAV 2020 4.14.31 - Privilege Escalation
# Date: 2020-01-09
# Exploit Author: Kusol Watchara-Apanukorn
# Vendor Homepage: https://www.totalav.com/
# Version: 4.14.31
# Fixed on: 5.3.35
# Tested on: Windows 10 x64
# CVE : CVE-2019-18194

# Vulnerability Description:
# TotalAV 2020 4.14.31 has quarantine flaw that allows attacker escape of
# privilege by using NTFS directory junction.

**You can download vulnerability version with this link:
https://install.protected.net/windows/cdn3/4.14.31/TotalAV_Setup.exe

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Proof of Concept
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1. Plant the malicious file in this case we use DLL file
2. To exploit the vulnerability antivirus must detect the malicious dll
3. Move it to quarantine.
4. Attacker must create NTFS directory junction to restore

Full step: https://www.youtube.com/watch?v=88qeaLq98Gc


Vulnerability Disclosure Timeline:
==================================
17 Oct, 19 : Found Vulnerability
18 Oct, 19 : Vendor Notification
18 Oct, 19 : Request CVE
21 Oct, 19 : Vendor Response
mid Dec, 19 : Vendor released new patched (v5.3.35)
09 Jan, 20: Vulnerability Disclosure