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Category:   Application (File Transfer/Sharing)  >   FTP (Generic) Vendors:   HPE
(HP Adds Fix for VVOS) Several FTP Server Implementations Allow Remote Users to Obtain Root-Level Privileges on the Server
SecurityTracker Alert ID:  1002350
SecurityTracker URL:  http://securitytracker.com/id/1002350
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Sep 8 2001
Impact:   Execution of arbitrary code via local system, Execution of arbitrary code via network, Root access via local system, Root access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Network Associates COVERT Labs issued an advisory (COVERT-2001-02) for multiple FTP server implementations. These implementations allow remote and local users to obtain root-level privileges on the server.

In general, if the remote user has the ability to create directories on the FTP server, these vulnerabilities can be exploited. The vulnerabilities are related to the use of the glob() function.

In some cases, user input that has been expanded by glob() can exceed expected boundary lengths and trigger a buffer overflow. In other cases, the glob() function contains other buffer overflows.

Network Associates reports that the following operating systems have been confirmed to contain vulnerable FTP daemons:

FreeBSD 4.2, OpenBSD 2.8, NetBSD 1.5, IRIX 6.5.x, HPUX 11, Solaris 8

For details on the exact nature of the vulnerabilities, see the source message or refer to the COVERT Labs Advisory:

http://www.pgp.com/research/covert/advisories/048.asp

Impact:   A remote or local user can obtain root privileges on the FTP server.
Solution:   The vendor has added a fix for HP-UX VVOS. See the Source Message for the vendor's advisory containing directions on how to obtain the appropriate fix.
Cause:   Boundary error
Underlying OS:  UNIX (HP/UX)

Message History:   This archive entry is a follow-up to the message listed below.
Apr 10 2001 Several FTP Server Implementations Allow Remote Users to Obtain Root-Level Privileges on the Server



 Source Message Contents

Subject:  security bulletins digest



                        HP Support Information Digests

===============================================================================
o  IT Resource Center World Wide Web Service
   ---------------------------------------------------

   If you subscribed through the IT Resource Center and would
   like to be REMOVED from this mailing list, access the
   IT Resource Center on the World Wide Web at:

     http://www.itresourcecenter.hp.com/

   Login using your IT Resource Center User ID and Password.
   Then select Support Information Digests (located under
   Maintenance and Support).  You may then unsubscribe from the
   appropriate digest.
===============================================================================


Digest Name:  daily security bulletins digest
    Created:  Thu Aug 30  3:00:02 PDT 2001

Table of Contents:

Document ID      Title
---------------  -----------
HPSBUX0107-162   Security Vulnerability in ftpd and ftp (rev.01)
HPSBUX0107-160   Security Vulnerability in login (rev.01)

The documents are listed below.
-------------------------------------------------------------------------------


Document ID:  HPSBUX0107-162
Date Loaded:  20010829
      Title:  Security Vulnerability in ftpd and ftp (rev.01)

------------------------------------------------------------------------
**REV.01**    HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #0162,
Originally issued: 19 July '01    LAST CHANGE: 28 August July '01
 ------------------------------------------------------------------------

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:  ftpd and ftp incorrectly manage buffers.

PLATFORM: HP9000 Series 700/800 running HP-UX releases 10.01,
          10.10, 10.20, 10.24, 11.00, 11.04, and 11.11.

DAMAGE:   Remote users could execute unauthorized code.

**Rev.01**
SOLUTION: Install the appropriate patch for HP-UX releases as
          described below:

             10.01 or 10.10          PHNE_23947,
             10.20                   PHNE_23948,
---->>       10.24  (VVOS)           PHNE_24394,
             11.00                   PHNE_23949,
---->>       11.04  (VVOS)           PHNE_24395,
             11.11                   PHNE_23950.

AVAILABILITY: All patches are available now.
CHANGE SUMMARY:  HP-UX VVOS patches added
 ------------------------------------------------------------------------
A.  Background
    CERT Advisory CA-2001-07 references a problem with ftp server
    glob() funtion implementation.  The full text is available at:
       http://www.cert.org/advisories/CA-2001-07.html

**REV.01**
B.  Recommended solution
    The problem can be fully rectified by application of one of
    these patches to the appropriate HP-UX release:
             10.01, or 10.10         PHNE_23947,
             10.20                   PHNE_23948,
---->>       10.24  (VVOS)           PHNE_24394,
             11.00                   PHNE_23949,
---->>       11.04  (VVOS)           PHNE_24395,
             11.11                   PHNE_23950.

 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) for the appropriate digest.

    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.

    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 of Document ID:  HPSBUX0107-162--------------------------------------
 
 


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