alert ftp $EXTERNAL_NET any -> $HOME_NET any (msg:"GPL FTP SITE CHOWN overflow attempt"; flow:to_server,established; content:"SITE"; nocase; content:"CHOWN"; distance:0; nocase; isdataat:100,relative; pcre:"/^SITE\s+CHOWN\s[^\n]{100}/smi"; reference:bugtraq,2120; reference:cve,2001-0065; classtype:attempted-admin; sid:2101562; rev:13; metadata:created_at 2010_09_23, cve CVE_2001_0065, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)