Rule History

alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET WEB_SERVER HTTP Request Smuggling Attempt - Double Content-Length Headers"; flow:established,to_server; http.header.raw; content:"Content-Length|3a 20|"; fast_pattern; content:"Content-Length|3a 20|"; within:100; reference:url,www.owasp.org/index.php/HTTP_Request_Smuggling; classtype:web-application-attack; sid:2017146; rev:4; metadata:created_at 2013_07_13, deprecation_reason Performance, performance_impact Significant, signature_severity Major, updated_at 2024_02_20;)