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CA-96.04.README
Issue date: February 22, 1996

Revision history
  July 1, 1996		Added information about the next release of BIND.
  Mar. 29, 1996		Added information about the next release of BIND.
			Added information for Sun Microsystems, Inc.
			Added  updated IsValid.c program information.
  Feb. 28, 1996		Added vendor information for Silicon Graphics Inc.

This file is a supplement to CERT advisory CA-96.04, "Corrupt Information from
Network Servers."  We update this file as additional information becomes
available.

Note: We recommend checking with your vendor for current MD5 checksum values.
      After we publish checksums in advisories and READMEs, the checksums may
      become obsolete because the files they refer to have been updated.

The text below the dotted line originally appeared as an appendix in the
advisory.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Added July 1, 1996

Latest release of Bind-4.9.4 is available in:

	 ftp://ftp.vix.com/pub/bind/release/4.9.4/bind-4.9.4-REL.tar.gz

	 MD5: 145b66129d71f4edcf728f3b7b69e9a2

This information is also included in the latest software versions
directory:

	 ftp://info.cert.org/pub/latest_sw_versions/bind

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Added March 29, 1996

The CERT staff has received information that the next minor release of BIND
nameserver will be enforcing RFC952 (as modified by RFC1123) hostname
conformance as part of its SECURITY measures. Following The BIND release,
hostnames that fail to conform to these rules will be unreachable from
sites running these servers.

Hostnames (A records) are restricted to the following characters only:

            "A" - "Z", "a" - "z", "0" - "9", "." and "-"

These characters are specifically excluded:  "_" and "/".

For a full description of what is allowed in a hostname, please
refer to RFC952 and RFC1123, available from http://ds.internic.net/ds/

        RFC952: DOD INTERNET HOST TABLE SPECIFICATION, October 1985
        RFC1123: Requirements for Internet Hosts -- Application and
                        Support, October 1989

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Added March 29, 1996

An updated version of IsValid.c (referred to in Section III.A of the advisory)
is available in

          ftp://info.cert.org/pub/tools/ValidateHostname/IsValid.c
          ftp://ftp.cert.dfn.de/pub/tools/net/ValidateHostname/IsValid.c

The following files are in the directory (from the README):

IsValid.l       The lex/flex file containing the code for
                IsValidHostname and IsValidIPAddress
                MD5 (IsValid.l) = 2d35040aacae4fb12906eb1b48957776

IsValid-raw.c   The C file created by running flex
                on IsValid.l
                MD5 (IsValid-raw.c) = 367c77d3ef84bc63a5c23d90eeb69330

IsValid.c       The editted file created by internalizing
                variable and function definitions in
                IsValid-raw.c
                MD5 (IsValid.c) = ffe45f1256210aeb71691f4f7cdad27f

IsValid.diffs   The set of diffs between IsValid-raw.c
                and IsValid.c
                MD5 (IsValid.diffs) = 3619022cf31d735151f8e8c83cce3744

htest.c         A main routing for testing IsValidHostname
                and IsValidIPAddress
                MD5 (htest.c) = 2d50b2bffb537cc4e637dd1f07a187f4

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.........................................................................
Below is information we have received from vendors. If you do not see an
entry for your vendor, please contact the vendor directly for status
information and further instructions.

- -----------------------
Eric Allman (original author of sendmail)

Install a patch to sendmail.

If you are presently running sendmail 8.6.12, there is a patch that
makes version 8.6.13.

Similarly, if you are presently running sendmail 8.7.3, there is a
patch that makes version 8.7.4.

The patches are available for anonymous FTP from

        ftp://info.cert.org/pub/tools/sendmail/
        ftp://ftp.cs.berkeley.edu/ucb/src/sendmail/
        ftp://ftp.auscert.org.au/pub/mirrors/ftp.cs.berkeley.edu/ucb/sendmail/
        ftp://ftp.cert.dfn.de/pub/tools/net/sendmail/

Checksums for the 8.6.13 release:
          MD5 (sendmail.8.6.13.base.tar.Z) = e8cf3ea19876d9b9def5c0bcb793d241
          MD5 (sendmail.8.6.13.cf.tar.Z) = 4492026fa9e750cd33974322cb5a6fb9
          MD5 (sendmail.8.6.13.misc.tar.Z) = 7ec5d31656e93e08a3892f0ae542b674
          MD5 (sendmail.8.6.13.xdoc.tar.Z) = e4d3caebcdc4912ed2ecce1a77e45712

        Checksum for the 8.6.13 patch:
           MD5 (sendmail.8.6.13.patch) = 6390b792cb5513ff622da8791d6d2073

        Checksum for the 8.7.4 release:
           MD5 (sendmail.8.7.4.tar.Z) = 4bf774a12752497527aae11e2bdbab36

        Checksum for the 8.7.4 patch:
           MD5 (sendmail.8.7.4.patch) = ef828ad91fe56e4eb6b0cacced864cd5


- ----------------------
Hewlett-Packard Company

Vulnerable, watch readme file for updates.


- ----------------------
IBM Corporation

IBM is working on fixes for sendmail.


- ----------------------
Silicon Graphics Inc.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Modified February 28, 1996

It is HIGHLY RECOMMENDED that these measures be done on ALL SGI
systems running IRIX 3.x, 4.x, 5.x and 6.x.  The issue will be
permanently corrected in a future release of IRIX.

**** IRIX 3.x ****

Silicon Graphics Inc, no longer supports the IRIX 3.x operating system
and therefore has no patches or binaries to provide.

However, two possible actions still remain: 1) upgrade the system to a
supported version of IRIX (see below) and then install the patch or
2) obtain the sendmail source code from anonymous FTP at
ftp.cs.berkeley.edu and compile the program manually.  Please, note
that SGI will not assist with or support 3rd party sendmail programs.

**** IRIX 4.x ****

As of the date of this document, SGI does not have a IRIX 4.x binary
replacement that addresses this particular issue.   If in the future,
a replacement binary is generated, additional advisory information will
be provided.

However, two other possible actions are: 1) upgrade the system to a
supported version of IRIX (see below) and then install the patch or
2) obtain the sendmail source code from anonymous FTP at
ftp.cs.berkeley.edu and compile the program manually.  Please, note
that SGI will not assist with or support 3rd party sendmail programs.

**** IRIX 5.0.x, 5.1.x ****

For the IRIX operating systems versions 5.0.x and 5.1.x, an upgrade
to 5.2 or better is required first.  When the upgrade is completed,
then the patches described in the following sections can be applied
depending on the final version of the upgrade.

**** IRIX 5.2, 5.3, 6.0, 6.0.1, 6.1 ****

For the IRIX operating system versions 5.2, 5.3, 6.0, 6.0.1, and 6.1
an inst-able patch has been generated and made available via anonymous
FTP and your service/support provider.  The patch is number 1146
and will install on IRIX 5.2, 5.3, 6.0 and 6.0.1.


The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its
mirror, ftp.sgi.com.   Patch 1146 can be found in the following
directories on the FTP server:

        ~ftp/Security

                or

        ~ftp/Patches/5.2
        ~ftp/Patches/5.3
        ~ftp/Patches/6.0
        ~ftp/Patches/6.0.1
        ~ftp/Patches/6.1

                        ##### Checksums ####

The actual patch will be a tar file containing the following files:

      Filename:                 patchSG0001146
      Algorithm #1 (sum -r):    15709 3 patchSG0001146
      Algorithm #2 (sum):       16842 3 patchSG0001146
      MD5 checksum:             055B660E1D5C1E38BC3128ADE7FC9A95

      Filename:                 patchSG0001146.eoe1_man
      Algorithm #1 (sum -r):    26276 76 patchSG0001146.eoe1_man
      Algorithm #2 (sum):       1567 76 patchSG0001146.eoe1_man
      MD5 checksum:             883BC696F0A57B47F1CBAFA74BF53E81

      Filename:                 patchSG0001146.eoe1_sw
      Algorithm #1 (sum -r):    61872 382 patchSG0001146.eoe1_sw
      Algorithm #2 (sum):       42032 382 patchSG0001146.eoe1_sw
      MD5 checksum:             412AB1A279A030192EA2A082CBA0D6E7

      Filename:                 patchSG0001146.idb
      Algorithm #1 (sum -r):    39588 4 patchSG0001146.idb
      Algorithm #2 (sum):       10621 4 patchSG0001146.idb
      MD5 checksum:             259DD47E4574DAF9041675D64C39102E


Past SGI Advisories and security patches can be obtained via
anonymous FTP from
		ftp://sgigate.sgi.com
or its mirror
		ftp://ftp.sgi.com

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Added March 29, 1996

Sun Microsystems, Inc.

Included below is information concerning sendmail patches as outlined in Sun
Microsystems Security Bulletin: #00133, 8 March 1996. The complete bulletin is
available from ftp://info.cert.org/pub/vendors/sun/sun_bulletin_00133.

    Here are our estimates for the availability of fixes incorporating
    into sendmail more strenuous checks against name-server-based attacks.

    Note that the upcoming SunOS 4.1.x patches will represent the first
    backport of sendmail 8.6.x to those platforms, and will probably be
    assigned new patch numbers (instead of being recorded as revisions
    of the existing patches).

         OS version     Est. date
         ----------     ---------
         5.6            in 5.6 FCS release
         5.5.1          in 5.5.1 FCS release
         5.5            Apr '96
         5.4            Apr '96
         5.3            Apr '96
         4.1.4          May '96
         4.1.3_U1       May '96
         4.1.3          May '96

List of Current Sendmail Patches

   Until the patches listed above are available, Sun recommends that every
   customer run the following sendmail patches on their systems.

   A. Current sendmail patches

   The latest sendmail patch for each supported version of SunOS is
   shown below. All current SunOS 5.x patches are based on sendmail
   V8; all SunOS 4.1.x patches are currently based on sendmail V5.

   [Note that no sendmail patches exists for SunOS 5.5 and SunOS
    5.5_x86. All earlier fixes were built into these releases.]

         OS version     Patch ID        Released
         ----------     ---------       ---------
         5.4_x86        102064-05       19 Jan 96
         5.4            102066-06       19 Jan 96
         5.3            101739-08       19 Jan 96
         4.1.4          102423-04        5 Oct 95
         4.1.3_U1       101665-07        5 Oct 95
         4.1.3          100377-22        5 Oct 95

    Patch 100377-22 was issued jointly for SunOS 4.1.3 and SunOS 4.1.3c.

    B. Obsolete sendmail patches

    The following sendmail patches are now obsolete, and will no longer
    be maintained. Each is superseded by a patch listed above.

         OS version     Patch ID        Date Released
         ----------     ---------       -------------
         5.4_x86         102320-01      26 May 95
         5.4             102319-01      26 May 95
         5.3             101235-01       1 May 95
         5.3 (sic)       101371-04       9 Feb 94
         4.1.4           102356-01      22 Feb 95
         4.1.3_U1        101436-08      28 Oct 94
         4.1.3           100224-13      28 Oct 94

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
    --------------- -----------  ----------  --------------------------------
    102064-05.tar.Z 08423   335  16923  669  2816EF17F40E2FA5E8260CD98D349875
    102066-06.tar.Z 62613   385  52067  770  666E6D6075E40D2BFDB539830EF1BCDA
    101739-08.tar.Z 60842   385  28595  770  369D4E0758672ADCDAD2219179B8A062
    102423-04.tar.Z 40900   216  33691  432  022B546A882B42FF826FE28429B2EDD8
    101665-07.tar.Z 44656   216  37045  431  86F942F8CCBAD905AB2AE8CA33490D2B
    100377-22.tar.Z 39051   214  58206  427  7B55564E6104FABAD7283DAE1CDD3D4A

The checksums shown above are from the BSD-based checksum (on 4.1.x,
/bin/sum; on SunOS 5.x, /usr/ucb/sum) and from the SVR4 version on
on SunOS 5.x (/usr/bin/sum).

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