ET WEB_CLIENT Firefox Interleaving document.write and appendChild Overflow (POC SPECIFIC)

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_CLIENT Firefox Interleaving document.write and appendChild Overflow (POC SPECIFIC)";
    flow:from_server,established;
    content:"document.body.appendChild(cobj)";
    content:"document.getElementById|28 22|suv|22 29|.innerHTML";
    content:"new|20|Array|28|";
    reference:url,bugzilla.mozilla.org/show_bug.cgi?id=607222;
    reference:url,blog.mozilla.com/security/2010/10/26/critical-vulnerability-in-firefox-3-5-and-firefox-3-6/;
    classtype:attempted-user;
    sid:2011893; rev:3;
    metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2010_11_06, deployment Perimeter, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26;
)