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	      AUSCERT External Security Bulletin Redistribution
                                    
                                    
           ESB-98.122 -- HEWLETT-PACKARD SECURITY BULLETIN: #00079
                      HP-UX ftp Security Vulnerability
                                      
                               03 August 1998

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

Hewlett-Packard has released the following advisory concerning a
potential vulnerability identified in the HP-UX ftp client.  The
ftp client can be tricked into running arbitrary commands supplied
by the remote server.

The following security bulletin is provided as a service to AusCERT's
members.  As AusCERT did not write this document, AusCERT has had
no control over its content.  As such, the decision to use any or
all of this information is the responsibility of each user or
organisation, and should be done so in accordance with site policies
and procedures.

NOTE: This is only the original release of the security bulletin.
It will not be updated when the original bulletin is.  If downloading
at a later date, it is recommended that the bulletin is retrieved
from the original authors to ensure that the information is still
current.

If you have any questions or need further information, please
contact Hewllett-Packard directly.

Previous advisories and external security bulletins can be retrieved
from:

        http://www.auscert.org.au/Information/advisories.html

If you believe that your system has been compromised, contact
AusCERT or your representative in FIRST (Forum of Incident Response
and Security Teams).

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for emergencies.


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Document ID:  HPSBUX9807-079
Date Loaded:  19980722
      Title:  Security Vulnerability with ftp on HP-UX

- -------------------------------------------------------------------------
        HEWLETT-PACKARD SECURITY BULLETIN: #00079  23 July 1998
- -------------------------------------------------------------------------

The information in the following Security Bulletin should be acted upon
as soon as possible.  Hewlett-Packard 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: ftp client interprets server provided filenames which can
         cause commands to be run on the client.

PLATFORM: HP9000 series 700/800, HP-UX releases 9.X, 10.X, and 11.00

DAMAGE:   Local users can increase their privileges

SOLUTION: Install the patches listed below.

AVAILABILITY: All patches are available now, except as noted.

- -------------------------------------------------------------------------
I.
   A. Background

   The ftp client can be tricked into running arbitrary commands
   supplied by the remote server.

   B. Fixing the problem

   Install the applicable patches for the fileset: ARPA-RUN ARPA-MAN
         HP-UX release   9.X                 PHNE_13595

   Install the applicable patches for the fileset:
   InternetSrvcs.INETSVCS-RUN or InternetSrvcs.INET-ENG-A-MAN.

         HP-UX release   10.0,10.01,10.10    PHNE_13596
         HP-UX release   10.16               PHNE_16006 *
         HP-UX release   10.20               PHNE_13597
         HP-UX release   10.24               PHNE_15802
         HP-UX release   11.00               PHNE_14479

   The CMW release (HP-UX 10.16) will be available after 10 August 98.

   Install the applicable patches for the fileset:
   InternetSvcSec.INETSVCS-SEC or InternetSvcSec.ISEC-ENG-A-MAN,
   (Secure Internet Services),
         HP-UX release   10.20               PHNE_15544


   C. Recommended solution - Install the applicable patches.
      NOTE: The Secure Internet Services product, if enabled, has to
            be disabled before the installation and removal of
            patch PHNE_15544 for HP-UX 10.20.
            If Secure Internet Services is enabled during patch
            installation, the installation will fail with an error.
      NOTE: On the HP-UX 11.00 release patch only:
            This version of FTP has some new configuration files that
            can be used to take advantage of new functionality. Sample
            of the new configuration files are provided in
            /usr/newconfig/etc/ftpd.
            These files can be altered per your needs and copied
            to the location /etc/ftpd.  Information on these new
            features introduced by this new version of ftpd are in
            the file:
                  /usr/share/doc/RelNotes_newftp.txt

   D. To subscribe to automatically receive future NEW HP Security
      Bulletins from the HP Electronic Support Center via electronic
      mail, do the following:

      User your browser to get to the HP Electronic Support Center page
      at:

        http://us-support.external.hp.com
               (for US, Canada, Asia-Pacific, & Latin-America)
        http://europe-support.external.hp.com     (for Europe)

      Login with your user ID and password, or register for one
      (remember to save the User ID assigned to you, and your password).
      Once you are on the Main Menu, Click on the Technical Knowledge
      Database, and it will connect to a HP Search Technical Knowledge
      DB page.  Near the bottom is a link to our Security Bulletin
      archive.  Once in the archive there is another link to our current
      security patch matrix.  Updated daily, this matrix is categorized
      by platform/OS release, and by bulletin topic.

    F. To report new security vulnerabilities, send email to

           security-alert@hp.com

       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
       security-alert@hp.com.

      Permission is granted for copying and circulating this Bulletin to
      Hewlett-Packard (HP) customers (or the Internet community) for the
      purpose of alerting them to problems, if and only if, the Bulletin
      is not edited or changed in any way, is attributed to HP, and
      provided such reproduction and/or distribution is performed for
      non-commercial purposes.


      Any other use of this information is prohibited. HP is not liable
      for any misuse of this information by any third party.
________________________________________________________________________
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