Sun Security Bulletin #129 (sendmail)

[Mark.Graff () Eng Sun COM ( Mark Graff )]

Folks,

Here is the Sun companion bulletin to CERT CA-95:05.

Send inquiries to security-alert () sun com, please, not to me directly.
Thanks.

-mg-

-----------------------------------------------------------------------------
         SUN MICROSYSTEMS SECURITY BULLETIN: #00129, 22 February 1995
-----------------------------------------------------------------------------


BULLETIN TOPICS


In this bulletin Sun summarizes the availability of new security
patches for SunOS 4.1.x systems and 5.x (Solaris 2.x) systems.

These patches, which are the same as those announced today in CERT
advisory CA-95:05, supply fixes to all sendmail security bugs known
to us.

Not all of the bugs discussed in the CERT advisory are present in Sun
software.
    
I.  Announcement of patches for SunOS-wide "sendmail" vulnerability

II. Checksum Table


APPENDICES

A.  How to obtain Sun security patches

B.  How to report or inquire about Sun security problems

C.  How to obtain Sun security bulletins




          /\         Send Replies or Inquiries To:
         \\ \        
        \ \\ /       Mark Graff
       / \/ / /      Sun Security Coordinator
      / /   \//\     MS MPK3
      \//\   / /     2550 Garcia Avenue
       / / /\ /      Mountain View, CA 94043-1100
        / \\ \       Phone: 415-688-9081
         \ \\        Fax:   415-688-9101
          \/         E-mail: security-alert () Sun COM
 
                                -----------

Permission is granted for the redistribution of this Bulletin for
the purpose of alerting Sun customers to problems, as long as the
Bulletin is not edited and is attributed to Sun Microsystems.

Any other use of this information without the express written consent
of Sun Microsystems is prohibited. Sun Microsystems expressly disclaims
all liability for any misuse of this information by any third party.

-----------------------------------------------------------------------------
         SUN MICROSYSTEMS SECURITY BULLETIN: #00129, 22 February 1995
-----------------------------------------------------------------------------

I.  Announcement of patches for SunOS-wide "sendmail" vulnerability

    A. Patch list

    A set of new patches fix a sendmail security hole involving the
    "-oM" option. The patched vulnerability can allow a user with an
    unprivileged account on a system to overwrite system files and thus
    gain root access.

    We have produced patches for the versions of SunOS shown below.

         OS version      Patch ID    Patch File Name
         ----------      ---------   --------------- 
         4.1.3           100377-19   100377-19.tar.Z
         4.1.3_U1        101665-04   101665-04.tar.Z
         4.1.4           102356-01   102356-01.tar.Z
         5.3             101739-07   101739-07.tar.Z
         5.4             102066-04   102066-04.tar.Z
         5.4_x86         102064-04   102064-04.tar.Z

    Patches have also been created for Sun's Trusted Solaris and
    Interactive Unix products. To obtain either, contact your Sun
    representative. 

    B. Patch notes
 
    1. The last security-related patches for sendmail were announced 21
    July 1994. Sendmail patch revisions released since that time have
    not been related to security.

    2. Patches are available for all supported Sun architectures. Note
    that this does not include the sun3 platform, which is no longer
    supported, nor any version of the operating system prior to 4.1.3.

    3. The 4.1.3 version of the patch is also applicable to 4.1.3C
    systems.

    4. The patch listed for 4.1.3_U1 (Solaris 1.1.1) applies to both
    the A and B versions. This is currently true for all U1 patches.

    5. Some previous SunOS 5.x sendmail patches were bundled into the
    jumbo kernel patch during 1994. That decision proved to be a
    mistake, and was reversed. The patches listed concern only
    sendmail.

    6. The only bug mentioned explicitly in the CERT advisory concerns
    IDENT (RFC 1413) functionality. Sun does not support that feature,
    and that bug is absent from all Sun software.


II. Checksum Table

    In the checksum table we show the BSD and SVR4 checksums and MD5
    digital signatures for the compressed tar archives.

    File            BSD          SVR4        MD5
    Name            Checksum     Checksum    Digital Signature
    --------------- -----------  ----------  --------------------------------
    100377-19.tar.Z 01093   212  22539  423  8CE1C1E04B8A640F2B90EAE1AA813351
    101665-04.tar.Z 28743   213  48403  426  EA5E76D0B1A43756E58AEA18AB6D7BCC
    101739-07.tar.Z 30088   214  60567  428  CF85226BAF145D6B1BD457E189E771BE
    102064-04.tar.Z 33127   188  30212  375  276F05037CA1A72D1D2019A98C241327
    102066-04.tar.Z 13253   214  47552  428  AE190B5CAD8E0CFA8DE7DD059E4A7E71
    102356-01.tar.Z 53116   203  58382  406  B23AC4EFDC8D82B6528E46E27717EBD8

    The checksums shown above are from the BSD-based checksum
    (on 4.1.x, /bin/sum;  on Solaris 2.x, /usr/ucb/sum) and from
    the SVR4 version on Solaris 2.x (/usr/bin/sum).


APPENDICES

A.  How to obtain Sun security patches

    1. If you have a support contract

    Customers with Sun support contracts can obtain the patches listed
    here--and all other Sun security patches--from:

       - Local Sun answer centers, worldwide
       - SunSolve Online, and SunSITEs worldwide

    The patches are available via World Wide Web at http://sunsolve1.sun.com. 

    You should also contact your answer center if you have a support
    contract and:

       - You need assistance in installing a patch 
       - You need additional patches
       - You want an existing patch ported to another platform
       - You believe you have encountered a bug in a Sun patch
       - You want to know if a patch exists, or when one will be ready

    2. If you do not have a support contract

    Sun also makes its security patches available to customers who do
    not have a support contract, via anonymous ftp:

       - In the US, from /systems/sun/sun-dist on ftp.uu.net
       - In Europe, from ~ftp/sun/fixes on ftp.eu.net

    In some cases patches will appear on the European site a day or
    two after a bulletin is released.

    Sun does not furnish patches to any external distribution sites
    other than the ones mentioned here. 


    3. About the checksums

    Patches announced in a Sun security bulletin are uploaded to the
    ftp.*.net sites just before the bulletin is released, and seldom
    updated.  In contrast, the "supported" patch databases are
    refreshed nightly, and will often contain newer versions of a patch
    incorporating changes which are not security-related.

    So that you can quickly verify the integrity of the patch files
    themselves, we supply checksums for the tar archives in each
    bulletin. The listed checksums should always match those on the
    ftp.*.net systems. (The rare exceptions are listed in the
    "checksums" file there.)

    Normally, the listed checksums will also match the patches on the
    SunSolve database. However, this will not be true if we have
    changed (as we sometimes do) the README file in the patch after the
    bulletin has been released.

    In the future we plan to provide checksum information for the
    individual components of a patch as well as the compressed archive
    file. This will allow customers to determine, if need be, which
    file(s) have been changed since we issued the bulletin containing
    the checksums.

    If you would like assistance in verifying the integrity of a patch
    file please contact this office or your local answer center.


B.  How to report or inquire about Sun security problems

    If you discover a security problem with Sun software or wish to
    inquire about a possible problem, contact one or more of the
    following:

       - Your local Sun answer centers
       - Your representative computer security response team, such as CERT 
       - This office. Address postal mail to:

         Sun Security Coordinator
         MS MPK2-04
         2550 Garcia Avenue Mountain
         View, CA 94043-1100

         Phone: 415-688-9081
         Fax:   415-688-9101
         E-mail: security-alert () Sun COM

     We strongly recommend that you report problems to your local Answer
     Center. In some cases they will accept a report of a security bug
     even if you do not have a support contract. An additional notification
     to the security-alert alias is suggested but should not be used as your
     primary vehicle for reporting a bug.


C.   How to obtain Sun security bulletins

     1. Subscription information

     Sun Security Bulletins are available free of charge as part of
     our Customer Warning System. It is not necessary to have a Sun
     support contract in order to receive them.

     To subscribe to this bulletin series, send mail to the address
     "security-alert () Sun COM" with the subject "subscribe CWS
     your-mail-address" and a message body containing affiliation and
     contact information. To request that your name be removed from the
     mailing list, send mail to the same address with the subject
     "unsubscribe CWS your-mail-address". Do not include other requests
     or reports in a subscription message.

     Due to the volume of subscription requests we receive, we cannot
     guarantee to acknowledge requests. Please contact this office if
     you wish to verify that your subscription request was received, or
     if you would like your bulletin delivered via postal mail or fax.

     2. Obtaining old bulletins

     Sun Security Bulletins are archived on ftp.uu.net (in the same
     directory as the patches) and on SunSolve. Please try these
     sources first before contacting this office for old bulletins.

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