alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"GPL IMAP login buffer overflow attempt"; flow:established,to_server; content:"LOGIN"; isdataat:100,relative; pcre:"/\sLOGIN\s[^\n]{100}/smi"; reference:bugtraq,13727; reference:bugtraq,502; reference:cve,1999-0005; reference:cve,1999-1557; reference:cve,2005-1255; reference:nessus,10123; reference:cve,2007-2795; reference:nessus,10125; classtype:attempted-user; sid:2101842; rev:16; metadata:created_at 2010_09_23, cve CVE_1999_0005, confidence High, signature_severity Major, updated_at 2019_07_26;)