alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Arris TR3300 user.cgi Command Injection Attempt (CVE-2022-27002)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/user.cgi?NDDNS_ENABLE=1"; fast_pattern; startswith; content:"DDNS_HOST|3d|"; distance:0; pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R"; reference:cve,2022-27002; reference:url,unit42.paloaltonetworks.com/mirai-variant-targets-iot-exploits/; classtype:attempted-admin; sid:2057318; rev:1; metadata:affected_product Arris, attack_target Networking_Equipment, tls_state plaintext, created_at 2024_11_07, cve CVE_2022_27002, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2024_11_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)