ET EXPLOIT FritzBox RCE POST Request

alert http any any -> $HOME_NET any (
    msg:"ET EXPLOIT FritzBox RCE POST Request";
    flow:to_server,established;
    urilen:14;
    http.method;
    content:"POST";
    http.uri;
    content:"/cgi-bin/webcm"; fast_pattern;
    http.request_body;
    content:"getpage="; depth:10;
    content:"errorpage="; distance:0;
    content:"/html/index.html&login|3a|command"; distance:0;
    reference:url,www.exploit-db.com/exploits/33136;
    classtype:attempted-admin;
    sid:2020867; rev:5;
    metadata:created_at 2015_04_09, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_30;
)