alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"GPL WEB_SERVER Apache Chunked-Encoding worm attempt"; flow:to_server,established; content:"CCCCCCC|3A| AAAAAAAAAAAAAAAAAAA"; nocase; reference:bugtraq,4474; reference:bugtraq,4485; reference:bugtraq,5033; reference:cve,2002-0071; reference:cve,2002-0079; reference:cve,2002-0392; classtype:web-application-attack; sid:2101809; rev:10; metadata:created_at 2010_09_23, signature_severity Unknown, updated_at 2019_07_26;)