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Home >> Browse Vulnerability Assessment Database >> FTP >> Solaris FTPd tells if a user exists


Vulnerability Assessment Details

Solaris FTPd tells if a user exists

Vulnerability Assessment Summary
CWD ~root before logging in

Detailed Explanation for this Vulnerability Assessment

It is possible to acertain the existence of a
user on the remote system by issuing the command
CWD ~, even before logging in.

Ie:
telnet target 21
CWD ~root
530 Please login with USER and PASS.

CWD ~nonexistinguser
530 Please login with USER and PASS.
550 Unknown user name after ~

A possible hacker may use this to acertain the existence of
known to be vulnerable accounts (like guest) or to
acertain which system you are running.

Solution : inform your vendor, and ask for a patch, or
change your FTP server

Network Security Threat Level: Low

Networks Security ID: 2564

Vulnerability Assessment Copyright: This script is Copyright (C) 2001 Renaud Deraison

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