alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET ACTIVEX RealPlayer CDDA URI Overflow Uninitialized Pointer Attempt"; flow:established,to_client; content:"CFCDAA03-8BE4-11CF-B84B-0020AFBBCCFA"; nocase; content:"cdda|3A|//"; nocase; distance:0; isdataat:100,relative; content:!"|0A|"; within:100; pcre:"/<OBJECT\s+[^>]*classid\s*=\s*[\x22\x27]?\s*clsid\s*\x3a\s*\x7B?\s*CFCDAA03-8BE4-11CF-B84B-0020AFBBCCFA/si"; reference:bid,44450; reference:cve,2010-3747; classtype:attempted-user; sid:2012543; rev:3; metadata:created_at 2011_03_24, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)