RE: Checkpoint FW-1 on Nokia - potential user enumeration bug?

From: DABDELMOat_private
Date: Thu Jan 09 2003 - 01:27:23 PST

  • Next message: Christopher Lyon: "RE: Checkpoint FW-1 on Nokia - potential user enumeration bug?"

    Hi Chris,
    
    Actually it seems to be the opposite. The standard administration account
    under IPSO is "admin". "fw1adm" is not an account known by IPSO.
    When I try every account under the /etc/passwd file on IPSO 3.6 or IPSO
    3.4.1, if I input the wrong password, I get the "Login incorrect" message
    just after the first try on the password:
    
    login: admin
    Password:
    Login incorrect
    login: root
    Password:
    Login incorrect
    login: daemon
    Password:
    Login incorrect
    
    If you enter a non existing account in that file, you get the second prompt
    for the password:
    
    login: fw1adm
    Password:
    Password:
    Login incorrect
    login: hello
    Password:
    Password:
    Login incorrect
    login: fzefzeop
    Password:
    Password:
    Login incorrect
    
    I don't think that behaving has been addressed by Nokia.
    Best Regards
    
    David
    
    -----Message d'origine-----
    De: Chris McNab [mailto:chris.mcnabat_private]
    Date: mercredi 8 janvier 2003 01:55
    À: pen-testat_private
    Objet: 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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