[Snort-sigs] isssue with sid 1621, FTP CMD overflow attempt

Milani Paolo Paolo.Milani at ...1843...
Tue Feb 3 14:41:12 EST 2004


I must be missing something, this signature looks for CMD command (+overflow) in ftp.. but there is no such command in the ftp protocol, at least according to rfc959... am I looking at the wrong rfc?

alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP CMD overflow attempt"; flow:to_server,established; content:"CMD"; nocase; isdataat:100,relative; pcre:"/^CMD\s[^\n]{100}/smi"; classtype:attempted-admin; sid:1621; rev:10;)

Paolo Milani

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