FTP Supports Cleartext Authentication

Low Nessus Plugin ID 34324


Authentication credentials might be intercepted.


The remote FTP server allows the user's name and password to be transmitted in cleartext, which could be intercepted by a network sniffer or a man-in-the-middle attack.


Switch to SFTP (part of the SSH suite) or FTPS (FTP over SSL/TLS). In the latter case, configure the server so that control connections are encrypted.

Plugin Details

Severity: Low

ID: 34324

File Name: ftp_clear_text_credentials.nasl

Version: 1.26

Type: remote

Family: FTP

Published: 2008/10/01

Updated: 2020/03/27

Dependencies: 10092, 42149

Risk Information

Risk Factor: Low

CVSS Score Source: manual

CVSS Score Rationale: Cleartext credentials can be intercepted on the network

CVSS v2.0

Base Score: 2.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N

Vulnerability Information

Excluded KB Items: global_settings/supplied_logins_only

Reference Information

CWE: 522, 523, 928, 930