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TUCoPS :: HP/UX :: ciacm032.txt

HP-UX Security Vulnerability with wu-ftpd 2.6




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[CIAC] INFORMATION BULLETIN

M-032: HP-UX Security Vulnerability with wu-ftpd 2.6

[Hewlett-Packard Company Security Bulletin: #0180]

January 23, 2002 19:00 GMT
  ------------------------------------------------------------------------
 PROBLEM:           Format string vulnerability in wu-ftp 2.6.1 and
                    earlier, when running with debug mode enabled, allows
                    remote attackers to execute arbitrary commands via a
                    malformed argument that is recorded in a PASV port
                    assignment.
 PLATFORM:          HP9000 Series 700/800 running HP-UX releases 11.0 and
                    11.11.
 DAMAGE:            A remote user may execute arbitrary code on the
                    server.
 SOLUTION:          Download and install the latest WEB upgrade.
  ------------------------------------------------------------------------
 VULNERABILITY      The risk is HIGH. The vulnerability and exploits have
 ASSESSMENT:        been discussed in public forums.
  ------------------------------------------------------------------------

 LINKS:
   CIAC BULLETIN:          http://www.ciac.org/ciac/bulletins/m-032.shtml
  ------------------------------------------------------------------------

[***** Start Hewlett-Packard Company Security Bulletin: #0180 *****]

--------------------------------------------------------------------
   HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #0180,
   Originally issued: 22 Jan. 2002
 --------------------------------------------------------------------

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:  Security vulnerability in WU-FTPD 2.6., Format String.
          CVE identifier: CAN-2001-0187
          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2001-0187

PLATFORM: HP9000 Series 700/800 running HP-UX releases 11.0 and 11.11.

DAMAGE:   A remote user may execute arbitrary code on the server.

SOLUTION: Use the latest WEB upgrade which will upgrade WU-FTPD to
          version 2.6 (rev b01.002)

MANUAL ACTIONS: Download and install the latest WEB upgrade.

AVAILABILITY: It is available now for 11.0 and 11.11.

 ------------------------------------------------------------------
A. Background
   There is a format string vulnerability in wu-ftpd.
   The Common Vulnerabilities and Exposures (CVE) group
   has assigned the identifier: CAN-2001-0187

  http://www.securityfocus.com/bid/2296

  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2001-0187

B. Fixing the problem
   To determine if wu-ftpd version 2.6 is installed on a system:

     what /usr/lbin/ftpd | grep wuftpd-2.6

   If version 2.6 IS installed, then apply the latest web
   upgrade now. Registration for the download is necessary:

   http://www.software.hp.com/

   and search on "wu-ftpd" (without the quotes)

   or:

http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/displayProductInfo.pl?productNumber=WUFTPD26

   If revision 2.6 is NOT installed, then make sure you have
   installed the current patches for HP Security Bulletin
   "HPSBUX0107-162 Security Vulnerability in ftpd".

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
   at:

       http://itrc.hp.com

    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.

    or

    To -review- bulletins already released, select the link
    (in the middle column) "Search Technical Knowledge
    Database".

    To -gain access- to the Security Patch Matrix, or the
    "The Security Bulletins Archive" 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.

    For information on the Security Patch Check tool, see:
    http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/displayProductInfo.pl?productNumber=B6834AA"

    The security patch matrix is also available via anonymous
    ftp:

    ftp.itrc.hp.com:~ftp/export/patches/hp-ux_patch_matrix

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

 D. 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.
 ________________________________________________________________
[***** End Hewlett-Packard Company Security Bulletin: #0180 *****]

  ------------------------------------------------------------------------
CIAC wishes to acknowledge the contributions of Hewlett-Packard Company for
the information contained in this bulletin.
  ------------------------------------------------------------------------
CIAC services are available to DOE, DOE Contractors, and the NIH. CIAC can
be contacted at:

    Voice:          +1 925-422-8193 (7 x 24)
    FAX:            +1 925-423-8002
    STU-III:        +1 925-423-2604
    E-mail:          ciac@llnl.gov
    World Wide Web:  http://www.ciac.org/
                     http://ciac.llnl.gov
                     (same machine -- either one will work)
    Anonymous FTP:   ftp.ciac.org
                     ciac.llnl.gov
                     (same machine -- either one will work)

  ------------------------------------------------------------------------
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, process, or service by trade name, trademark,
manufacturer, or 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
Government or the University of California, and shall not be used for
advertising or product endorsement purposes.
  ------------------------------------------------------------------------
UCRL-MI-119788
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