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________________________________________________________________________________
                   Sun Microsystems, Inc. Security Bulletin
                
Bulletin Number:        #00194
Date:                   March 29, 2000
Cross-Ref:              CERT Advisory CA-99-14
Title:                  BIND
________________________________________________________________________________

The information contained in this Security Bulletin is provided "AS IS." 
Sun makes no warranties of any kind whatsoever with respect to the information 
contained in this Security Bulletin. ALL EXPRESS OR IMPLIED CONDITIONS, 
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If any of the above provisions are held to be in violation of applicable law, 
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________________________________________________________________________________

1.  Bulletin Topics

    Sun announces the release of patches for Solaris(tm) 7 which relate to 
    four vulnerabilities in BIND reported in CERT Advisory CA-99-14.
        
    Sun recommends that you install the patches listed in section 4 
    immediately on systems running Solaris 7 with Sun's implementation
    of BIND.
    
2.  Who is Affected
        
    Vulnerable:     Solaris 7 running Sun's implementation of BIND
                 
    Not vulnerable: All other supported versions of Solaris.
    
3.  Understanding the Vulnerabilities
    
    The Berkeley Internet Name Domain (BIND) is an implementation of the 
    Domain Name System (DNS) protocols.
    
    CERT Advisory CA-99-14 describes six vulnerabilities in certain versions
    of BIND. Solaris 7 is vulnerable to the following four vulnerabilities 
    reported in the CERT advisory.
    
      Vulnerability #3: the "so_linger bug"
    
        Remote attackers may degrade the performance of named.
   
      Vulnerability #4: the "fdmax bug"

        Remote attackers may cause named to crash.
   
      Vulnerability #5: the "maxdname bug"

        Remote attackers may cause named to crash.
   
      Vulnerability #6: the "naptr bug"

        Remote attackers may cause named to crash.

    The CERT advisory CA-99-14 is available at:
    
        ftp://info.cert.org/pub/cert_advisories/CA-99-14-bind.txt
        
    No other supported versions of Solaris (including Solaris 8) are 
    affected by any of the six vulnerabilities reported in the CERT 
    advisory.

        
4.  List of Patches

    The following patches are available in relation to the above problems.

    Solaris version     Patch ID        
    _______________     _________
    Solaris 7 (SPARC)   107018-02
                        106938-03       
    Solaris 7 (Intel)   107019-02
                        106939-03
_______________________________________________________________________________
APPENDICES

A.  Patches listed in this bulletin are available to all Sun customers at:
    
      http://sunsolve.sun.com/securitypatch

B.  Checksums for the patches listed in this bulletin are available at:

      ftp://sunsolve.sun.com/pub/patches/CHECKSUMS

C.  Sun security bulletins are available at:

      http://sunsolve.sun.com/security
        
D.  Sun Security Coordination Team's PGP key is available at:

      http://sunsolve.sun.com/pgpkey.txt
                                    
E.  To report or inquire about a security problem with Sun software, contact 
    one or more of the following:
  
        - Your local Sun Solution Center
        - Your representative computer security response team, such as CERT 
        - Sun Security Coordination Team. Send email to:
         
                security-alert@sun.com

F.  To receive information or subscribe to our CWS (Customer Warning System) 
    mailing list, send email to:
    
                security-alert@sun.com
   
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________________________________________________________________________________

Copyright 2000 Sun Microsystems, Inc. All rights reserved. Sun, 
Sun Microsystems, Solaris and SunOS are trademarks or registered trademarks 
of Sun Microsystems, Inc. in the United States and other countries. This 
Security Bulletin may be reproduced and distributed, provided that this 
Security Bulletin is not modified in any way and is attributed to 
Sun Microsystems, Inc. and provided that such reproduction and distribution 
is performed for non-commercial purposes.

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