alert tcp $EXTERNAL_NET any -> $HOME_NET 4321 (msg:"GPL MISC rwhoisd format string attempt"; flow:to_server,established; content:"-soa %p"; reference:bugtraq,3474; reference:cve,2001-0838; classtype:misc-attack; sid:2101323; rev:7; metadata:created_at 2010_09_23, cve CVE_2001_0838, signature_severity Informational, updated_at 2019_07_26;)