I try to create Custom Object to detect FTP injection. I wrote pattern " .*(\%0d\%0a) " but it show operation fail pattern must be at least 7 bytes. How i create RegEx pattern to match "%0d%0a" in below command.
ftp://a%0D%0A EHLO%20a%0D%0A MAIL%20FROM%3A%3Ca%40example.org%3E%0D%0A RCPT%20TO%3A%3Calech%40alech.de%3E%0D%0A DATA%0D%0A From%3A%20a%40example.org%0A To%3A%20alech%40alech.de%0A Subject%3A%20test%0A %0A test!%0A %0D%0A .%0D%0A QUIT%0D%0A :email@example.com:25/a
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