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This bulletin was written by Vigil@nce : http://vigilance.fr/offer

SYNTHESIS OF THE VULNERABILITY

An attacker can bypass the deny_hosts directive of vsftpd, in
order to access to forbidden files.

Impacted products: openSUSE, SUSE Linux Enterprise Desktop, SLES,
vsftpd

Severity: 2/4

Creation date: 03/02/2015

DESCRIPTION OF THE VULNERABILITY

The deny_file directive of the vsftpd.conf file is used to
restrict the access to a file. For example "deny_file=/home/*".

However, using for example the syntax "/./home/", an attacker can
access to files located under "/home".

An attacker can therefore bypass the deny_hosts directive of
vsftpd, in order to access to forbidden files.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/vsftpd-bypassing-deny-hosts-16099