alert tcp $EXTERNAL_NET any -> $HOME_NET 110 (msg:"GPL POP3 LIST overflow attempt"; flow:to_server,established; content:"LIST"; nocase; isdataat:10,relative; pcre:"/^LIST\s[^\n]{10}/smi"; reference:bugtraq,948; reference:cve,2000-0096; reference:nessus,10197; classtype:attempted-admin; sid:2101937; rev:8; metadata:created_at 2010_09_23, cve CVE_2000_0096, confidence Medium, signature_severity Major, updated_at 2019_07_26;)