alert tcp $EXTERNAL_NET any -> $HOME_NET 110 (msg:"GPL POP3 AUTH overflow attempt"; flow:to_server,established; content:"AUTH"; nocase; isdataat:50,relative; pcre:"/^AUTH\s[^\n]{50}/smi"; reference:bugtraq,830; reference:cve,1999-0822; reference:nessus,10184; classtype:attempted-admin; sid:2101936; rev:9; metadata:created_at 2010_09_23, cve CVE_1999_0822, confidence Medium, signature_severity Major, updated_at 2019_07_26;)