ET WEB_SPECIFIC_APPS Cisco Small Business Router RV Series Command Injection (CVE-2023-20118) M2

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Cisco Small Business Router RV Series Command Injection (CVE-2023-20118) M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/cgi-bin/config.exp|3f|"; fast_pattern;
    content:"_cert"; distance:0;
    pcre:"/^[^\s]*?[\x3b\x60\x7c\x24]/R";
    reference:url,www.iotsec-zone.com/article/383;
    reference:cve,2023-20118;
    classtype:web-application-attack;
    sid:2060433; rev:1;
    metadata:affected_product Cisco_RV_Series, attack_target Server, tls_state TLSDecrypt, created_at 2025_02_27, cve CVE_2023_20118, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2025_02_27, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)