[NEWS] New HP Jetdirect SNMP Password Vulnerability when Using Web JetAdmin

From: support@securiteam.com
Date: 03/07/03

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    From: support@securiteam.com
To: list@securiteam.com
Date: 7 Mar 2003 13:11:51 +0200

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      New HP Jetdirect SNMP Password Vulnerability when Using Web JetAdmin
    ------------------------------------------------------------------------

    SUMMARY

    A vulnerability in HP Jetdirect's SNMP support allows an attacker to
    retreive the password used by the administrator to protect the
    configuration of the printer. The vulnerability requires only the
    knowledge of the SNMP community name (by default it is set to 'public').

    DETAILS

    Vulnerable systems:
     * HP Jetdirect cards JetDirect 300X, (J3263A), JetDirect EX Plus
    (J2591A), JetDirect 400N (J2552A, J2552B), JetDirect 600N (J3110A, J3111A,
    J3113A) and older (Where the Jetdirect card is being managed from HP Web
    Jetadmin)

    How to check your printers for this vulnerability:
    Use an SNMP toolkit to read the following OID from your printer:
    iso.org.dod.internet.private.enterprises.hp.nm.system.net-peripheral.net-printer.generalDeviceStatus.gdPasswords (In numerical format: .1.3.6.1.4.1.11.2.3.9.1.1.13.0)

    An example on a Windows machine, using SNMPUTIL from the Windows Resource
    kit:
    C:\>snmputil get 131.155.120.118 public .1.3.6.1.4.1.11.2.3.9.1.1.13.0
    Variable = .iso.org.dod.internet.private.enterprises.11.2.3.9.1.1.13.0
    Value = String
    <0x41><0x42><0x43><0x44><0x55><0x56><0x3d><0x31><0x30><0x38><0
    x3b><0x00><0x00><0x00><0x00> ..etc...

    The resulting string reads in ASCII: ABCDEF=108;
    The Web Jetadmin device password is the word before the '=' sign, in this
    case: ABCDEF

    How to protect your printer:
    1. Keep the Web Jetadmin device password EMPTY (don't do this on newer
    cards than the ones mentioned above)
    2. Define a 'Set community name' instead

    Additional means of protection (does not address the SNMP vulnerability):
    3. Define a telnet password (do not keep it empty)
    4. Create an 'allow list' from the Telnet console to restrict access from
    defined IP-addresses

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:helpdesk@tm.tue.nl> Sven
    Pechler.

    ========================================

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    ====================
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    The information in this bulletin is provided "AS IS" without warranty of any kind.
    In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.

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