SSRT2345 Security Vulnerability in DNS Resolvers for HP Peripherals (rev.1)

SSRT2345 Security Vulnerability in DNS Resolvers for HP Peripherals (rev.1)

Post by Security Ale » Thu, 17 Apr 2003 04:29:39

Hash: SHA1

**REVISED 01**
 Originally issued: 18 September 2002
 Last Revised:  14 April 2003
 SSRT2345 Security Vulnerability in DNS Resolvers
          for HP Peripherals (rev.1)

NOTICE: There are no restrictions for distribution of this
Bulletin provided that it remains complete and intact.

The information in the following Security Bulletin should be
acted upon as soon as possible.  Hewlett-Packard Company will
not be liable for any consequences to any customer resulting
from customer's failure to fully implement instructions in this
Security Bulletin as soon as possible.

PROBLEM: Multiple potential vulnerabilities in DNS Resolver

PLATFORM: HP Jetdirect Print Servers, HP LaserJet Printers

IMPACT: Potential denial of service, potential unauthorized access

**REVISED 01**
SOLUTION: Upgrade the firmware to X.24.06 or subsequent (where
          X is a character from L to Z).  If it is not possible
          to upgrade the firmware, eliminate the DNS server's IP
          address or use specific IP addresses rather than DNS

**REVISED 01**
                Upgrade the firmware or change the DNS
                configuration as documented below.

CHANGE SUMMARY: Rev.1 - firmware available

**REVISED 01**
AVAILABILITY: The firmware is available now.
 A. Background

    CERT (Computer Emergency Response Team) has recently posted
    an alert regarding DNS Resolver vulnerabilities in many
    network devices that implement a DNS Resolver.

    The following HP Jetdirect devices are vulnerable:

      Upgradable Print Servers

        615n J6057A EIO 10/100 Print Server
        610n J4169A EIO 10/100 Print Server
        610n J4167A EIO 802.5 Print Server
        680n J6058A EIO 802.11b Print Server
        380x J6061A External 802.11b Print Server
        310x J6038A External 10/100 Print Server
        250m J6042A LIO 10/100 Print Server

      Non-Upgradable Print Servers

        175x J6035A External 10/100 Print Server
        200m J6039A LIO 10/100 Print Server

  The following HP Peripherals are vulnerable:

   HP Color LaserJet 4550
   HP Color LaserJet 4600
   HP LaserJet 4100, 4100MFP
   HP LaserJet 9000, 9000MFP
   HP Digital Sender 9100C

 B. Recommended solution

**REVISED 01**
    For HP Jetdirect Print Servers (Upgradable)

 -->Upgrade the firmware to X.24.06 or subsequent
 -->      (where X is a character from L to Z).

    Please refer to the following for more information:

    Upgrading Jetdirect Firmware

    1. Via the HP Download Manager

    2. Via Web Jetadmin

    Making Jetdirect Print Servers Secure on the Network

    Using the HP Jetdirect Embedded Web Server Security Wizard

    For HP Jetdirect Print servers (Not Upgradable)

    1) If connected to a scanner, a scan-to-email function is
       available.  The email address of the SMTP server should
       be entered as an IP address rather than a DNS name.

        a) To modify the email address of the SMTP server access
           Jetdirect's web server.
        b) Click the "Networking" tab, then click "Other Settings".
        c) The Email Server can be specified as an IP Address.
           Then click "Apply".

    2) If scan-to-email is not being used, the DNS resolver
       is not being used.  However, the steps above can be
       implemented in anticipation of adding a scanner.

    HP Peripherals

    NOTE: The HP Peripherals listed implement a separate resolver
    from Jetdirect.

    These peripherals are not upgradable.  Please utilize IP
    addresses rather than DNS names for any email notifications
    or other functionality that would require a DNS resolver.

    To learn more about securing Jetdirect Print Servers on
    the network please refer to this document:

 C. To subscribe to automatically receive future NEW HP Security
    Bulletins from the HP IT Resource Center via electronic
    mail, do the following:

    Use your browser to get to the HP IT Resource Center page

    Use the 'Login' tab at the left side of the screen to login
    using your ID and password.  Use your existing login or the
    "Register" button at the left to create a login, in order to
    gain access to many areas of the ITRC.  Remember to save the
    User ID assigned to you, and your password.

    In the left most frame select "Maintenance and Support".

    Under the "Notifications" section (near the bottom of
    the page), select "Support Information Digests".

    To -subscribe- to future HP Security Bulletins or other
    Technical Digests, click the check box (in the left column)
    for the appropriate digest and then click the "Update
    Subscriptions" button at the bottom of the page.


    To -review- bulletins already released, select the link
    (in the middle column) for the appropriate digest.

    NOTE: Using your itrc account security bulletins can be
          found here:

    To -gain access- to the Security Patch Matrix, select
    the link for "The Security Bulletins Archive".  (near the
    bottom of the page)  Once in the archive the third link is
    to the current Security Patch Matrix. Updated daily, this
    matrix categorizes security patches by platform/OS release,
    and by bulletin topic.  Security Patch Check completely
    automates the process of reviewing the patch matrix for
    11.XX systems.  Please note that installing the patches
    listed in the Security Patch Matrix will completely
    implement a security bulletin _only_ if the MANUAL ACTIONS
    field specifies "No."

    The Security Patch Check tool can verify that a security
    bulletin has been implemented on HP-UX 11.XX systems providing
    that the fix is completely implemented in a patch with no
    manual actions required.  The Security Patch Check tool cannot
    verify fixes implemented via a product upgrade.

    For information on the Security Patch Check tool, see:

    The security patch matrix is also available via anonymous

    On the "Support Information Digest Main" page:
    click on the "HP Security Bulletin Archive".

    The PGP key used to sign this bulletin is available from
    several PGP Public Key servers.  The key identification
    information is:

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    If you have problems locating the key please write to  Please note that this key is
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 D. To report new security vulnerabilities, send email to

    Please encrypt any exploit information using the
    security-alert PGP key, available from your local key
    server, or by sending a message with a -subject- (not body)
    of 'get key' (no quotes) to


(c)Copyright 2003 Hewlett-Packard Company
Hewlett-Packard Company shall not be liable for technical or
editorial errors or omissions contained herein. The information
in this document is subject to change without notice.
Hewlett-Packard Company and the names of HP products referenced
herein are trademarks and/or service marks of Hewlett-Packard
Company.  Other product and company names mentioned herein may be
trademarks and/or service marks of their respective owners.


Version: PGP Personal Security 7.0.3


Yours truly,
HP S/W Security Team
WTEC Cupertino, California