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TotalAV 2020 4.14.31 Privilege Escalation

TotalAV 2020 4.14.31 Privilege Escalation
Posted Jan 10, 2020
Authored by Kusol Watchara-Apanukorn

TotalAV 2020 version 4.14.31 suffers from a privilege escalation vulnerability.

tags | exploit
MD5 | fa745ef8d8c4c3ce7882248588396e62

TotalAV 2020 4.14.31 Privilege Escalation

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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 : N/A

# 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

///////////////////////////////////
Proof of Concept
//////////////////////////////////
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

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