alert http any any -> $HOME_NET any (msg:"ET EXPLOIT [Rapid7] Zyxel ZTP setWanPortSt mtu Parameter Exploit Attempt (CVE-2022-30525)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:20; content:"/ztp/cgi-bin/handler"; fast_pattern; http.request_body; content:"setWanPortSt"; content:"mtu"; pcre:"/^["']\s*:\s*["']\s*[^0-9]+/Ri"; reference:cve,2022-30525; reference:url,www.rapid7.com/blog/post/2022/05/12/cve-2022-30525-fixed-zyxel-firewall-unauthenticated-remote-command-injection/; classtype:misc-attack; sid:2036596; rev:3; metadata:attack_target Networking_Equipment, created_at 2022_05_16, cve CVE_2022_30525, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_26, reviewed_at 2024_09_12;)