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>>                                                      CERT-NL, 01-Mar-2000 <<
>> All CERT-NL information has been moved to http://cert.surfnet.nl.  Links  <<
>> to CERT-NL information contained in this advisory are therefore outdated. <<
>>                                                                           <<
>> CERT-NL also has stopped the CERT-CC-Mirror service.  Due to this the     <<
>> links to the CERT-CC mirror are obsolete. Visit the CERT-CC site for the  <<
>> complete CERT-CC advisory texts:                     http://www.cert.org  <<
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Security Advisory                                                       CERT-NL
===============================================================================
Author/Source : CERT-NL (Gert Meijerink)                    Index  :    S-94-03
Distribution  : World                                       Page   :          1
Classification: External                                    Version:      Final
Subject       : Revised patch for SunOS /usr/etc/rpc.mountd Date   :  15-Feb-94
===============================================================================

CERT-NL received information about a revised patch for SunOS
/usr/etc/rpc.mountd Vulnerability.

We advise you to carefully read this advisory and take appropriate action.

We thank CERT/CC for providing this information.

=============================================================================

                    *** THIS IS A REVISED CERT ADVISORY ***
           *** IT CONTAINS NEW VULNERABILITY AND PATCH INFORMATION ***
                  *** SUPERSEDES CERT-NL ADVISORY S-92-12  ***

CERT-NL has received information concerning a vulnerability in 
/usr/etc/rpc.mountd in Sun Microsystems, Inc. SunOS 4.1.1, 4.1.2, 
4.1.3, and 4.1.3c.  SunOS 4.1.3.u.1, Solaris 2.x, and Solbourne's 4.1B 
and 4.1C are not vulnerable.

Sun has produced a patch for this vulnerability for sun3 and sun4
architectures.  It is available through your local Sun Answer Center
as well as through anonymous FTP from ftp.nic.surfnet.nl in the
surfnet/net-security/cert-nl/patches/sun-fixes directory.

This vulnerability is currently being exploited.  Please review CERT-NL
Advisory S-94-02 'Ongoing Network Monitoring Attacks'.
 
- -----------------------------------------------------------------------------

I.   Description

     If an access list of hosts within /etc/exports is a string 
     over 256 characters or if the cached list of netgroups exceeds
     the cache capacity then the filesystem can be mounted by anyone.
      
II.  Impact

     Unauthorized remote hosts will be able to mount the filesystem.
     This will allow unauthorized users read and write access to files
     on mounted filesystem.

III. Solution

     Obtain and install the appropriate patch following the instructions
     included with the patch.

     Patch-ID   Filename         BSD        MD5
                                 Checksum   Checksum
     100296-04  100296-04.tar.Z  42492 40   20a76c75abadd3360ad92091a25ceb3c

- ---------------------------------------------------------------------------
If you believe that your system has been compromised, contact  CERT-NL
or your local Site Security Contact (SSC).
- ---------------------------------------------------------------------------
==============================================================================
CERT-NL is the Computer Emergency Response Team for SURFnet customers. SURFnet
is the Dutch network for educational, research and related institutes. CERT-NL
is a member of the Forum of Incident Response and Security Teams (FIRST).

All CERT-NL material is available under:
  http://cert.surfnet.nl/

In case of computer or network security problems please contact your local
CERT/security-team or CERT-NL  (if your institute is NOT a SURFnet customer
please address the appropriate (local) CERT/security-team).

CERT-NL is one/two hour(s) ahead of UTC (GMT) in winter/summer,
i.e. UTC+0100 in winter and UTC+0200 in summer (DST).

   Email:     cert-nl@surfnet.nl     ATTENDED REGULARLY ALL DAYS
   Phone:     +31 302 305 305        BUSINESS HOURS ONLY
   Fax:       +31 302 305 329        BUSINESS HOURS ONLY
   Snailmail: SURFnet bv
              Attn. CERT-NL
              P.O. Box 19035
              NL - 3501 DA  UTRECHT
              The Netherlands

NOODGEVALLEN:    06 22 92 35 64      ALTIJD BEREIKBAAR
EMERGENCIES : +31 6 22 92 35 64      ATTENDED AT ALL TIMES
CERT-NL'S EMERGENCY PHONENUMBER IS ONLY TO BE USED IN CASE OF EMERGENCIES:
THE SURFNET HELPDESK OPERATING THE EMERGENCY NUMBER HAS A *FIXED*
PROCEDURE FOR DEALING WITH YOUR ALERT AND WILL IN REGULAR CASES RELAY IT
TO CERT-NL IN AN APPROPRIATE MANNER. CERT-NL WILL THEN CONTACT YOU.
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