# Exploit Title: Anviz AIM CrossChex Standard 4.3 - CSV Injection# Author: Gjoko 'LiquidWorm' Krstic @zeroscience# Date: 2018-11-01# Vendor: Anviz Biometric Technology Co., Ltd.# Product web page: https://www.anviz.com# Affected version: 4.3.6.0# Tested on: Microsoft Windows 7 Professional SP1 (EN)# CVE: N/A# References# Advisory ID: ZSL-2018-5498# Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2018-5498.php# Desc: CSV (XLS) Injection (Excel Macro Injection or Formula# Injection) exists in the AIM CrossChex 4.3 when importing# or exporting users using xls Excel file. This can be exploited# to execute arbitrary commands on the affected system via# SE attacks when an attacker inserts formula payload in the# 'Name' field when adding a user or using the custom fields# 'Gender', 'Position', 'Phone', 'Birthday', 'Employ Date'# and 'Address'. Upon importing, the application will launch# Excel program and execute the malicious macro formula.# PoC# From the menu:
User -> Add -> use payload: =cmd|' /C mspaint'!L337
User -> Import / Export: use payload: =cmd|' /C mspaint'!L337