FTP : Solaris FTPd tells if a user exists

Vulnerability Search		Search 324607 CVE descriptions and 146377 test descriptions, access 10,000+ cross references.
	Tests CVE All

Test ID: 1.3.6.1.4.1.25623.1.0.10653

Category: FTP

Title: Solaris FTPd tells if a user exists

Summary: NOSUMMARY

Description: Description:

It is possible to determine 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 ~

An attacker may use this to determine the existence of
known to be vulnerable accounts (like guest) or to
determine which system you are running.

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

Risk factor : Low

Cross-Ref: BugTraq ID: 2564

Copyright This script is Copyright (C) 2001 Renaud Deraison

This is only one of 146377 vulnerability tests in our test suite. Find out more about running a complete security audit.
To run a free test of this vulnerability against your system, register below.

Test ID:	1.3.6.1.4.1.25623.1.0.10653
Category:	FTP
Title:	Solaris FTPd tells if a user exists
Summary:	NOSUMMARY
Description:	Description: It is possible to determine 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 ~ An attacker may use this to determine the existence of known to be vulnerable accounts (like guest) or to determine which system you are running. Solution : inform your vendor, and ask for a patch, or change your FTP server Risk factor : Low
Cross-Ref:	BugTraq ID: 2564
Copyright	This script is Copyright (C) 2001 Renaud Deraison