Zabbix Agent 6.2.7 Insecure Permissions / Privilege Escalation

`# Exploit Title: Zabbix agents - Insecure Permissions on non-default installation directory location  
# Discovery by: mmg  
# Discovery Date: 2023-01-23  
# Vendor Homepage: https://www.zabbix.com/download_agents  
# Software Link Zabbix agent : https://cdn.zabbix.com/zabbix/binaries/stable/6.2/6.2.7/zabbix_agent-6.2.7-windows-amd64-openssl.msi  
# Software Link Zabbix agent 2 : https://cdn.zabbix.com/zabbix/binaries/stable/6.2/6.2.7/zabbix_agent2-6.2.7-windows-amd64-openssl.msi  
# Tested Version: Zabbix agent and Zabbix agent 2 (v6.2.6, v6.2.7 and older versions)  
# Vulnerability Type: Local Privilege Escalation  
# Tested on OS: Windows 10 Pro Version 22H2 (OS Build 19045.2486) x64 version  
# CVSSv3 Vectors : https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H  
# CVE N/A  
  
  
# Step to discover:  
  
Go to Start and type powershell.  
Enter the following command and press Enter:  
Get-WmiObject win32_service | ?{ $_.Name -like '*zabbix*' -and $_.Pathname -notlike "*C:\Program Files*"}| select Name,PathName  
  
# Example of a vulnerable installation  
  
Name PathName  
---- --------  
Zabbix Agent "C:\Software\Zabbix Agent\zabbix_agentd.exe" --config "C:\Software\Zabbix Agent\zabbix_agentd.conf"  
Zabbix Agent 2 "D:\software\Zabbix Agent 2\zabbix_agent2.exe" -c "D:\software\Zabbix Agent 2\zabbix_agent2.conf" -f=false  
  
# Exploit:  
  
A vulnerability was found in Zabbix Agents on non-default installation directory location.   
The Zabbix Agent executables have incorrect permissions, allowing a local unprivileged user to replace it  
with a malicious file that will be executed with "LocalSystem" privileges which will result in complete  
compromise of Confidentiality, Integrity and Availability.  
  
  
# Timeline  
Jan 23, 2023 - Reported to Zabbix  
Feb 1, 2023 - Zabbix does not consider this a vulnerability  
Feb 6, 2023 - Requested official approval to disclose it  
Feb 8, 2023 - Zabbix agrees with public disclosure  
Feb 13, 2023 - Public disclosure  
`