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TUCoPS :: HP/UX :: n-023.txt

Buffer Overrun Vulnerability in Samba Server2.2 (CIAC N-023)




             __________________________________________________________

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

                             INFORMATION BULLETIN

                  Buffer Overrun Vulnerability in Samba Server2.2                

December 11, 2002 21:00 GMT                                       Number N-023
[Revised 12 December 2002]
______________________________________________________________________________
PROBLEM:       A buffer overrun vulnerability has been discovered in Samba 
               Server2.2.
PLATFORM:      Multiple vendor products might be affected when used in 
               conjunction with the Samba Server2.2 product.   
DAMAGE:        If exploited, the vulnerability has the potential to allow an 
               attacker to gain root access. 
SOLUTION:      Check with your vendor for platform-specific solutions. Samba 
               has released Samba v2.2.7 which addresses this vulnerability
			   found in versions 2.2.2 through 2.2.6.  For more information,  
			   visit Samba's web site at: 
			   http://www.samba.org/samba/whatsnew/samba-2.2.7.html 
______________________________________________________________________________
VULNERABILITY  The risk is MEDIUM. Though the vulnerability has the potential 
ASSESSMENT:    to gain root access, there is no known exploit. 
______________________________________________________________________________
LINKS: 
 CIAC BULLETIN:      http://www.ciac.org/ciac/bulletins/n-023.shtml 
  
______________________________________________________________________________
[***** Start Hewlett-Packard Bulletin HPSBUX0212-230 *****]

Document ID:  HPSBUX0212-230
Date Loaded:  20021210
      Title:  SSRT2437 Sec. Vulnerability in CIFS/9000 Samba Server2 2


 -----------------------------------------------------------------
 Source: HEWLETT-PACKARD COMPANY
 SECURITY BULLETIN: HPSBUX0212-0230
 Originally issued: 10 Dec 2002
 SSRT2437 Sec. Vulnerability in CIFS/9000 Samba Server2.2
 -----------------------------------------------------------------


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: CIFS/9000 Server 2.2 buffer overflow vulnerability. 


IMPACT: Potential root access.


PLATFORM: HP 9000 servers running the following CIFS Server versions:


          - A.01.08
          - A.01.08.01
          - A.01.09


SOLUTION: Update to CIFS Server 2.2 version A.01.09.01


MANUAL ACTIONS: Yes - Update to version A.01.09.01


AVAILABILITY: CIFS Server 2.2 version A.01.09.01 is currently
              available from:
          <http://www.software.hp.com/NSM_products_list.html>


 ------------------------------------------------------------------


 A. Background
    A buffer overrun has been discovered in the HP CIFS Server
    version A.01.09 and earlier. There is no known exploit of
    this vulnerability, and the Samba Team has not been able to
    craft one themselves.
    Nevertheless, the Samba Team has judged the vulnerability
    significant and announced the defect and fix in their latest
    release.  HP has integrated the fix into the latest release
    of CIFS Server 2.2
    For additional details, see:
      http://www.samba.org/samba/whatsnew/samba-2.2.7.html


 B. Recommended solution
    Upgrade to CIFS Server 2.2 version A.01.09.01
    which is currently available from:


    <http://www.software.hp.com/NSM_products_list.html>


    It is the product B8725AA, CIFS/9000 Server 2.2.c.


 
 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=3DB6834AA


    The security patch matrix is also available via anonymous
    ftp:


    ftp://ftp.itrc.hp.com/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.


 ------------------------------------------------------------------


(c) Copyright 2002 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.
Hewlett-Packard Company and the names of HP products referenced
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.


 ________________________________________________________________
--
-----End of Document ID:  HPSBUX0212-230--------------------------------------



[***** End Hewlett-Packard Bulletin HPSBUX0212-230 *****]
_______________________________________________________________________________

CIAC wishes to acknowledge the contributions of Hewlett-Packard and Samba 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 (7x24)
    FAX:      +1 925-423-8002
    STU-III:  +1 925-423-2604
    E-mail:   ciac@ciac.org

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

   World Wide Web:      http://www.ciac.org/
   Anonymous FTP:       ftp.ciac.org

PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing
communities receive CIAC bulletins.  If you are not part of these
communities, please contact your agency's response team to report
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
constituencies can be obtained via WWW at http://www.first.org/.

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
Government or the University of California, and shall not be used for
advertising or product endorsement purposes.

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