alert http any any -> any any (msg:"ET WEB_SPECIFIC_APPS Draytek mainfunction.cgi formpassword Command Injection Attempt (CVE-2020-14472)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:25; content:"/cgi-bin/mainfunction.cgi"; fast_pattern; http.request_body; url_decode; content:"URL|3d|"; content:"HOST|3d|http"; content:"action=authuser"; content:"formusername|3d|"; content:"formpassword|3d|"; base64_decode:offset 0, relative; base64_data; pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/"; reference:cve,2020-14472; reference:url,github.com/Cossack9989/Vulns/blob/master/IoT/CVE-2020-14472.md; classtype:attempted-admin; sid:2058340; rev:1; metadata:created_at 2024_12_17, cve CVE_2020_14472, confidence High, signature_severity Unknown, tag Exploit, updated_at 2024_12_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)