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Date: Tue, 3 Feb 2015 09:28:36 +0100
From: Marcus Meissner <>
To: OSS Security List <>
Subject: vsftpd problem in deny_hosts


IBM reported to us a problem in vsftpd deny_hosts problem.


 Set the option "deny_file" in /etc/vsftpd.conf on a top-directory (for example "deny_file=/home/*")
 Then log in with ftp and try to cd to "/home/" first, which will fail, then try to cd to "/./home/" which will succeed!
 The latter case shouldn't be possible as well!

Ciao, Marcus

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