I have configured my vsftpd instances to use virtual users and map them to a system user. So all uploads should be written with owner and group of this system user (let's call it ftpsystemuser).
But in the the last weeks/months it appears that uploads are written twice, on instance as it should (owner and group of the system user used to map the virtual user that did the upload), and the other instance as root. Lik this:
-rw-r--r-- 1 root root 19968 16. Mär 11:24 Termine Leistungspr%FCfungen.doc -rw-r--r-- 1 ftpsystemuser ftpsystemuser 19968 16. Mär 11:24 Termine Leistungspr?fungen.doc
As you can see both instance use different syntax for the file name in case of German umlauts. In vsftpds log only the correct file is mentioned.
Can anybody tell me what is happening here? Is this something I can get rid off using certain configuration? Is it a security problem?
Any hint or help is appreciated.
Dirk