SSRT3487 Potential Security Vulnerability in tftpd

SSRT3487 Potential Security Vulnerability in tftpd

Post by Security Ale » Sat, 21 Jun 2003 01:59:03

Hash: SHA1

 Originally issued: 18 June 2003
 SSRT3487 Potential Security Vulnerability in tftpd

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: Potential Security Vulnerability in tftpd.

IMPACT: Potential denial of service, remotely exploitable.

PLATFORM: HP-UX B.11.00, HP-UX B.11.11, HP-UX B.11.22

SOLUTION: Install a preliminary patch as described below.

                Install a preliminary patch.

AVAILABILITY: The preliminary patches are available now.
 A. Background

    Certain network traffic can potentially cause tftpd to
    become unresponsive resulting in a denial of service.

 B. Recommended solution


     The following is a list by HP-UX revision of
     affected filesets and the fileset revision or
     patch containing the fix.  To determine if a
     system has an affected version, search the
     output of "swlist -a revision -l fileset"
     for an affected fileset, then determine if
     a fixed revision or the applicable patch is

     HP-UX B.11.00
     fix: Install PHNE_29129.depot

     HP-UX B.11.11
     fix: Install PHNE_29081.depot

     HP-UX B.11.22
     fix: Install PHNE_29130.depot

    1. Download the appropriate preliminary patch from the
       following ftp site:

        System:  (
        Login:     tftpd
        Password:  tftpd

        FTP Access:
                or: ftp://tftpd:tf...@
                or: ftp

        Note: There is an ftp defect in IE5 that may result in
               a browser hang.  To work around this:
        - Select Tools -> Internet Options -> Advanced
        - Un-check the option:
                  [ ] Enable folder view for FTP sites

         B.11.00 -  PHNE_29129.text
         B.11.11 -  PHNE_29081.text
         B.11.22 -  PHNE_29130.text

    2. Verify the cksum or md5 sum.

      3402850731 133120 PHNE_29129.depot
      3440857655 7076 PHNE_29129.text
      280396358 61440 PHNE_29081.depot
      3068789316 2986 PHNE_29081.text
      1912985866 102400 PHNE_29130.depot
      1515060965 2885 PHNE_29130.text

      MD5 (PHNE_29129.depot) = 91c5b0ed548b131cb8d5e0d7566e5555
      MD5 (PHNE_29129.text) = 83299cf3e2504b5527b4b02f8958438b
      MD5 (PHNE_29081.depot) = 0d95e24a8a65f64b3af34775bb216df4
      MD5 (PHNE_29081.text) = 791a03c155f263e5ed648d6c0e7ef9d1
      MD5 (PHNE_29130.depot) = a26acbf0cc0edcd7094c8c02e98dbb50
      MD5 (PHNE_29130.text) = aa2a5b0f9e63fd797015be64f569c9e7

     Note: If you wish to verify the md5 sum and you do not
           have a copy of md5, please refer to:
               Patch sums and the MD5 program
     Note: Using your itrc account security bulletins can be
          found here:

      3. Install the appropriate depot file using swinstall.

         Note:  This preliminary patch must be removed before
                installing the general release patch when it
                becomes available.

 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

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    Under the "Notifications" section (near the bottom of
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    To -subscribe- to future HP Security Bulletins or other
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    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".

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 D. To report new security vulnerabilities, send email to

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(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.
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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