FTP Server Bad Command Sequence Accepted (possible backdoor/proxy)

info Nessus Plugin ID 32375
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The remote FTP service accepts commands in any order.


The remote server advertises itself as being an FTP server, but it accepts commands sent out of order, which indicates that it may be a backdoor or a proxy.

Further FTP tests on this port will be disabled to avoid false alerts.

Plugin Details

Severity: Info

ID: 32375

File Name: ftpd_bad_sequence.nasl

Version: 1.12

Type: remote

Family: FTP

Published: 5/19/2008

Updated: 8/28/2018

Dependencies: find_service_3digits.nasl, doublecheck_std_services.nasl, logins.nasl, ftpd_no_cmd.nasl

Vulnerability Information

Required KB Items: Settings/ExperimentalScripts

Excluded KB Items: global_settings/supplied_logins_only