Zyxel Firewall ZTP Unauthenticated Command Injection
Posted on 16 May 2022
This Metasploit module exploits CVE-2022-30525, an unauthenticated remote command injection vulnerability affecting Zyxel firewalls with zero touch provisioning (ZTP) support. By sending a malicious setWanPortSt command containing an mtu field with a crafted OS command to the /ztp/cgi-bin/handler page, an attacker can gain remote command execution as the nobody user. Affected Zyxel models are USG FLEX 50, 50W, 100W, 200, 500, 700 using firmware 5.21 and below, USG20-VPN and USG20W-VPN using firmware 5.21 and below, and ATP 100, 200, 500, 700, 800 using firmware 5.21 and below.
