alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"GPL WEB_SERVER writeto.cnf access"; flow:to_server,established; http.uri; content:"/_vti_pvt/writeto.cnf"; nocase; reference:bugtraq,4078; reference:nessus,10575; classtype:web-application-activity; sid:2100965; rev:13; metadata:created_at 2010_09_23, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_22;)