TUCoPS :: HP/UX :: ciaci078.txt

HP-UX FTP Security Vulnerability



                       The U.S. Department of Energy
                    Computer Incident Advisory Capability
                           ___  __ __    _     ___
                          /       |     /_\   /
                          \___  __|__  /   \  \___

                             INFORMATION BULLETIN

                        HP-UX ftp Security Vulnerability

July 28, 1998 18:00 GMT                                           Number I-078
PROBLEM:       A vulnerability has been identified in the ftp client.
PLATFORM:      HP9000 series 700/800, HP-UX releases 9.X, 10.X, and 11.00
DAMAGE:        If exploited, local users may increase their privileges. This
               could lead to tricking the ftp client into running arbitrary
SOLUTION:      Apply the patches listed below.
VULNERABILITY  Hewlett-Packard recommends that these patches be applied as
ASSESSMENT:    soon as possible.

[  Start Hewlett-Packard Advisory  ]

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.

- -------------------------------------------------------------------------
   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
            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:

   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

               (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


       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

      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.
- -----End of Document ID:  HPSBUX9807-079--------------------------------------

[  End Hewlett-Packard Advisory  ]

CIAC wishes to acknowledge the contributions of Hewlett-Packard for the
information contained in this bulletin.

CIAC, the Computer Incident Advisory Capability, is the computer
security incident response team for the U.S. Department of Energy
(DOE) and the emergency backup response team for the National
Institutes of Health (NIH). CIAC is located at the Lawrence Livermore
National Laboratory in Livermore, California. CIAC is also a founding
member of FIRST, the Forum of Incident Response and Security Teams, a
global organization established to foster cooperation and coordination
among computer security teams worldwide.

CIAC services are available to DOE, DOE contractors, and the NIH. CIAC
can be contacted at:
    Voice:    +1 925-422-8193
    FAX:      +1 925-423-8002
    STU-III:  +1 925-423-2604
    E-mail:   ciac@llnl.gov

For emergencies and off-hour assistance, DOE, DOE contractor sites,
and the NIH may contact CIAC 24-hours a day. During off hours (5PM -
8AM PST), call the CIAC voice number 925-422-8193 and leave a message,
or call 800-759-7243 (800-SKY-PAGE) to send a Sky Page. CIAC has two
Sky Page PIN numbers, the primary PIN number, 8550070, is for the CIAC
duty person, and the secondary PIN number, 8550074 is for the CIAC
Project Leader.

Previous CIAC notices, anti-virus software, and other information are
available from the CIAC Computer Security Archive.

   World Wide Web:      http://www.ciac.org/
                        (or http://ciac.llnl.gov -- they're the same machine)
   Anonymous FTP:       ftp.ciac.org
                        (or ciac.llnl.gov -- they're the same machine)
   Modem access:        +1 (925) 423-4753 (28.8K baud)
                        +1 (925) 423-3331 (28.8K baud)

CIAC has several self-subscribing mailing lists for electronic
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3. SPI-NOTES, for discussion of problems and solutions regarding the
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You will receive an acknowledgment email immediately with a confirmation
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PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing
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incidents. Your agency's team will coordinate with CIAC. The Forum of
Incident Response and Security Teams (FIRST) is a world-wide
organization. A list of FIRST member organizations and their
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This document was prepared as an account of work sponsored by an
agency of the United States Government. Neither the United States
Government nor the University of California nor any of their
employees, makes any warranty, express or implied, or assumes any
legal liability or responsibility for the accuracy, completeness, or
usefulness of any information, apparatus, product, or process
disclosed, or represents that its use would not infringe privately
owned rights. Reference herein to any specific commercial products,
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otherwise, does not necessarily constitute or imply its endorsement,
recommendation or favoring by the United States Government or the
University of California. The views and opinions of authors expressed
herein do not necessarily state or reflect those of the United States
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LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC)

I-068: File Access Issue With Internet Information Server
I-069: Buffer overflows in some POP servers
I-070: Distributed DoS Attack Against NIS/NIS+ Networks
I-071: OpenVMS loginout Vulnerability
I-072: SunOS Solaris Vulnerabilities (libnsl, SUNWadmap)
I-073: multiscan ('mscan') Tool
I-074: Buffer Overflow in Some Implementations of IMAP Servers
I-075: Microsoft Office 98 Security Vulnerability
I-076: SGI IRIX ioconfig(1M) and disk_bandwidth(1M) Vulnerability
I-077: Mime Name Vulnerability in Outlook and Messenger

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