CVE-2021-42669 - Remote code execution via unrestricted file upload vulnerability in the Engineers online portal system.
# Technical description:
A unrestricted file upload vulnerability exists in the Engineers Online Portal system. An attacker can leverage this vulnerability in order to get a remote code execution on the affected web server.
Once an avatar gets uploaded it is getting uploaded to the /admin/uploads/ directory, and is accessible by all users.
By uploading a simple php webshell the attacker can gain remote code execution on the web server.
Affected components -
Vulnerable page - teacher_avatar.php
# CVE-2021-42669.py usage -
# Upload a simple webshell to the target machine -
python CVE-2021-42669.py <target_ip> <target_port> <target_uri> <username> <password>
## Example -
python CVE-2021-42669.py 127.0.0.1 80 /nia_uoz_monitoring_system/ MyUserName MyPassword
# Proof of concept (Poc) -
# Refernces -
# Discovered by -
Alon Leviev(TheHackingRabbi), 22 October, 2021.