alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"GPL IMAP authenticate overflow attempt"; flow:established,to_server; content:"AUTHENTICATE"; nocase; isdataat:100,relative; pcre:"/\sAUTHENTICATE\s[^\n]{100}/smi"; reference:bugtraq,12995; reference:bugtraq,130; reference:cve,1999-0005; reference:cve,1999-0042; reference:nessus,10292; classtype:misc-attack; sid:2101844; rev:12; metadata:created_at 2010_09_23, cve CVE_1999_0005, confidence Medium, signature_severity Major, updated_at 2019_07_26;)