alert tcp $EXTERNAL_NET any -> $SQL_SERVERS $ORACLE_PORTS (msg:"GPL SQL service_name buffer overflow attempt"; flow:to_server,established; content:"connect_data"; nocase; content:"|28|service_name="; nocase; isdataat:1000,relative; content:!"|22|"; within:1000; reference:url,www.appsecinc.com/Policy/PolicyCheck52.html; classtype:attempted-user; sid:2102649; rev:3; metadata:created_at 2010_09_23, confidence High, signature_severity Major, updated_at 2019_07_26;)