alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET WEB_SPECIFIC_APPS Potential Cewolf DOS attempt"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"/Cewolf?"; nocase; pcre:"/\&(width|height)\=([2-9][0-9][0-9][0-9]*)/i"; reference:url,lists.grok.org.uk/pipermail/full-disclosure/2011-February/079547.html; classtype:web-application-attack; sid:2012406; rev:5; metadata:created_at 2011_03_01, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_13;)