Conference minotr::security_advisory

143.0. "Information Only: CIAC H29a: HP-UX sendmail" by MINOTR::NOBLE (Your Data, Your Job...Protect Both) Thu May 08 1997 09:41

         
    The DIGITAL Corporate Information Security Group has received the
    following external security notice.  DIGITAL has identified similar
    problems for DIGITAL UNIX.  Remedial patches(binary kits) are in final
    testing and release is expected to begin soon.  DIGITAL will provide an
    internal user notice of the completion/availability of the patches via
    a CISG Security Advisory.
        
    This third party notice is being provided as information only.  No
    security action is required at this time.  Nor is any recommendation
    being made with regards the solution(s) identified.
    
    Should you happen to be using the third party software impacted by
    this notice, please use due discretion before implementing any or all
    of the solution(s) identified.
    
    If you are an internal user of the software impacted in this notice,
    and have any questions regarding this notice, then please contact your
    IT Cluster Security Manager.  An up-to-date list can be found at URL
    http://www-security.mko.dec.com/gen-info/sec-ops.html
      
                                  -=<>=-
    

    
             __________________________________________________________

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

                             INFORMATION BULLETIN

                      HP-UX sendmail Patches Vulnerability
                        Update to talkd in Bulletin H-29

May 1, 1997 22:00 GMT                                             Number H-29a
______________________________________________________________________________
PROBLEM:       In recent months, public domain sendmail developments have
               uncovered several security vulnerabilities.
PLATFORM:      HP-UX 9 and 10 with sendmail 8.7.5 or earlier.
DAMAGE:        Allows unauthorized file access possibly gaining root
               privilege.
SOLUTION:      Apply patches as indicated below.
______________________________________________________________________________
VULNERABILITY  Exploit details involving this vulnerability have been made
ASSESSMENT:    publicly available.
______________________________________________________________________________

This bulletin updates H-29by adding patch information from Hewlett-Packard. It
also corrects the problems noted in G-43 bringing all HP-UX versions to sendmail
8.7.6 revision.  HP feels comfortable (see below) with this version though it
does not address problems mentioned in H-11.

[ Start Hewlett-Packard Advisory ]

Document ID:  HPSBUX9704-059
Date Loaded:  970430
      Title:  Sendmail patches for HP-UX releases 9.X thru 10.20

- -------------------------------------------------------------------------
        HEWLETT-PACKARD SECURITY BULLETIN: #00059, 30 April 1997
- -------------------------------------------------------------------------

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:  Sendmail vulnerabilities in HP-UX releases

PLATFORM: HP 9000 Series 700/800s running versions of HP-UX 9.X & 10.X

DAMAGE:   Allows unauthorized file access.

SOLUTION: Apply the appropriate patch:
          PHNE_10116 on all platforms with HPUX releases 9.X, running
                     sendmail version 5.65;
          PHNE_10090 on all platforms with HPUX releases 10.0, 10.01,
                     10.10 running sendmail vers. 5.65;
          PHNE_9624 on all platforms with HPUX release 10.20, running
                     sendmail version 8.7.1.1.

AVAILABILITY:  All patches are available now.
- -------------------------------------------------------------------------
I.
   A. Background
      This bulletin addresses CERT advisories CA-95.05, CA-96.20, and
      CA-96.24.

      In recent months, public domain sendmail developments have
      uncovered several security vulnerabilities.  Hewlett-Packard has
      added the required fixes into our current sendmail releases.
      Prior to the new patches associated with this bulletin,
      Hewlett-Packard provided the following versions of sendmail:

              HP-UX 9.X through HP-UX 10.10 : sendmail 5.65
              HP-UX 10.20 (as shipped)      : sendmail 8.7.1.1
              HP-UX 10.20 + PHNE_8702       : sendmail 8.7.5

      The sendmail program is located in (/usr/{sbin,lib}/sendmail),
      i.e., /usr/sbin/sendmail or /usr/lib/sendmail, depending on
      your system).

   B. Hewlett-Packard continues to patch the 5.65 version of sendmail on
      those releases with which it originally shipped (all pre-10.20
      HP-UX). Similarly, the HP-UX release 10.20 started shipping
      sendmail 8.7.1.1; a companion patch PHNE_8702 brought the sendmail
      program to release level 8.7.5 functionality.

      Applying the 10.20 patch associated with this security bulletin
      will upgrade sendmail to version 8.7.6.  This sendmail release has
      been found to be stable and is a patch level with which
      Hewlett-Packard currently feels comfortable.
      The remaining patches associated with this bulletin provide a
      patched version of sendmail 5.65.

   C. Recommended solution
      Apply the patches appropriate to your system release level.

   D. Impact of the patch
      Applying the 10.20 patch associated with this security bulletin
      will upgrade sendmail /usr/sbin/sendmail binary to version 8.7.6.
      This sendmail release has been found to be stable and is a patch
      level with which Hewlett-Packard currently feels comfortable.
      The remaining patches associated with this bulletin provide a
      patched version of sendmail 5.65.

   E. To subscribe to automatically receive future NEW HP Security
      Bulletins from the HP SupportLine Digest service via electronic
      mail, do the following:

      1)  From your Web browser, access the URL:

      http://us-support.external.hp.com (US,Canada, Asia-Pacific,
                                         and Latin-America)

      http://europe-support.external.hp.com  (Europe)

      2)  On the HP Electronic Support Center main screen, select
      the hyperlink "Support Information Digests".

      3)  On the "Welcome to HP's Support Information Digests" screen,
      under the heading "Register Now", select the appropriate hyperlink
      "Americas and Asia-Pacific", or "Europe".

      4)  On the "New User Registration" screen, fill in the fields for
      the User Information and Password and then select the button
      labeled "Submit New User".

      5)  On the "User ID Assigned" screen, select the hyperlink
      "Support Information Digests".

      ** Note what your assigned user ID and password are for future
      reference.

      6)  You should now be on the "HP Support Information Digests Main"
      screen.  You might want to verify that your email address is
      correct as displayed on the screen.  From this screen, you may
      also view/subscribe to the digests, including the security
      bulletins digest.

      To get a patch matrix of current HP-UX and BLS security
      patches referenced by either Security Bulletin or Platform/OS,
      click on following screens in order:
         Technical Knowledge Database
         Browse Security Bulletins
         Security Bulletins Archive
         HP-UX Security Patch Matrix


   F. To report new security vulnerabilities, send email to

          [email protected]

      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
      [email protected].



   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:  HPSBUX9704-059--------------------------------------


[ 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.

    
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,
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.