alert tcp $EXTERNAL_NET any -> $HOME_NET 110 (msg:"GPL POP3 POP3 PASS overflow attempt"; flow:to_server,established; content:"PASS"; nocase; isdataat:50,relative; pcre:"/^PASS\s[^\n]{50}/smi"; reference:bugtraq,791; reference:cve,1999-1511; reference:nessus,10325; classtype:attempted-admin; sid:2101634; rev:15; metadata:created_at 2010_09_23, cve CVE_1999_1511, confidence Medium, signature_severity Major, updated_at 2019_07_26;)