ET WEB_CLIENT Mozilla Firefox mChannel Object Dangling Pointer Use-After-Free Memory Corruption Attempt

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_CLIENT Mozilla Firefox mChannel Object Dangling Pointer Use-After-Free Memory Corruption Attempt";
    flow:established,to_client;
    content:"QueryInterface|28|Components.interfaces.nsIChannelEventSink|29|"; nocase;
    content:"onChannelRedirect|28|null"; nocase; distance:0;
    reference:url,www.mozilla.org/security/announce/2011/mfsa2011-13.html;
    reference:bid,47635;
    reference:cve,2011-0065;
    classtype:attempted-user;
    sid:2013417; rev:2;
    metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2011_08_18, cve CVE_2011_0065, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26;
)