alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"GPL FTP SITE CHMOD overflow attempt"; flow:established,to_server; content:"SITE"; nocase; content:"CHMOD"; distance:0; nocase; isdataat:100,relative; pcre:"/^SITE\s+CHMOD\s[^\n]{100}/smi"; reference:bugtraq,10181; reference:bugtraq,9483; reference:bugtraq,9675; reference:cve,1999-0838; reference:nessus,12037; classtype:attempted-admin; sid:2102340; rev:9; metadata:created_at 2010_09_23, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_08;)