RE: Checkpoint FW-1 on Nokia - potential user enumeration bug?
From: Rob Lindenbusch (lfcrob@nicusa.com)
Date: 01/09/03
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- In reply to: Chris McNab: "Checkpoint FW-1 on Nokia - potential user enumeration bug?"
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From: "Rob Lindenbusch" <lfcrob@nicusa.com> To: "'Chris McNab'" <chris.mcnab@trustmatta.com>, <pen-test@securityfocus.com> Date: Thu, 9 Jan 2003 09:11:28 -0500
I have recently seen a "similar" behavior with SecureRemote under FW-1 4.1
Users attempting to authenticate to the VPN get an "unknown user" error if
the account does not exist and an "authentication failure" message if the
user does exist but the password is incorrect. This was tested on a Nokia,
but I would assume it is a FW-1 issue not confined to those boxes.
Rob
-----Original Message-----
From: Chris McNab [mailto:chris.mcnab@trustmatta.com]
Sent: Tuesday, January 07, 2003 7:55 PM
To: pen-test@securityfocus.com
Subject: Checkpoint FW-1 on Nokia - potential user enumeration bug?
Hey,
I was performing a pentest recently for a client, and found what seems to be
a user enumeration bug within Nokia IPSO (unknown as to which version and
patchlevel) running Checkpoint FW-1:
pipex-gw>telnet xxx.xxx.xxx.xxx
Trying xxx.xxx.xxx.xxx ... Open
IPSO (checkpointcharlie) (ttyp0)
login: root
Password:
Login incorrect
login: blah
Password:
Login incorrect
login: fw1adm
Password:
Password:
Login incorrect
login: fw1adm
Password:
Password:
Login incorrect
Login timed out after 300 seconds
[Connection to xxx.xxx.xxx.xxx closed by foreign host]
pipex-gw>
Obviously the fw1adm user exists, being the standard account under FW-1..
but I was wondering if anyone had seen this before, or even if this issue
had been addressed by Nokia?
Thanks,
Chris
Chris McNab
Technical Director
Matta Security Limited
18 Noel Street
London W1F 8GN
Tel: 08700 77 11 00
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