Title: BIND
Date Issued: December 17, 1998
Last Modified: December 17, 1998
Code: 00180
Source: SUN
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________________________________________________________________________________
 		   Sun Microsystems, Inc. Security Bulletin
 		
Bulletin Number:	#00180
Date: 			December 17, 1998
Cross-Ref:		CERT Advisory CA-98.05
Title:			BIND 
________________________________________________________________________________

The information contained in this Security Bulletin is provided "AS IS." 
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________________________________________________________________________________

1.  Background

    The Berkeley Internet Name Domain (BIND) is an implementation of the 
    Domain Name System (DNS).  
    
    CERT Advisory CA-98.05 describes three vulnerabilities in certain 
    versions of BIND. The first vulnerability, Inverse Query Buffer Overrun,
    can be exploited by a remote attacker to gain root access to a DNS 
    name server. The second vulnerability, Denial-of-Service Vulnerabilities,
    is concerned with buffer overflows that can be exploited to corrupt 
    DNS record data or crash the DNS server. SunOS(tm) and Solaris(tm) are 
    not vulnerable to third vulnerability described in the CERT advisory.
    For more information about the vulnerabilities, please see the 
    CERT advisory at:
    	
    	http://www.cert.org/ftp/cert_advisories/CA-98.05.bind_problems
    
    A vulnerability has also been discovered in SunOS and Solaris's 
    implementation of BIND with their use of temporary files. This vulnerability 
    can be exploited to overwrite arbitrary files.
    
2.  Affected Supported Versions
        
    Solaris(tm) versions:   2.6, 2.6_x86, 2.5.1, 2.5.1_x86, 2.5, 2.5_x86,
                            2.4, 2.4_x86 and 2.3 
                   
    SunOS(tm) versions:     4.1.4 and 4.1.3_U1
    
3.  Recommendations

    Sun recommends that you install the respective patches immediately on
    vulnerable systems including both DNS clients and servers.
    
    Operating System	Patch ID	
    _________________   _________    
    Solaris 2.6         105755-07		
    Solaris 2.6_x86     105756-07
    Solaris 2.5.1       103663-15
    Solaris 2.5.1_x86   103664-15
    Solaris 2.5         103667-11
    Solaris 2.5_x86     103668-11
    Solaris 2.4         102479-13
    Solaris 2.4_x86     102480-11
    Solaris 2.3         101359-10
    SunOS 4.1.4         106866-02
    SunOS 4.1.3_U1      106865-02
         
_______________________________________________________________________________
APPENDICES

A.  Patches listed in this bulletin are available to all Sun customers via 
    World Wide Web at:
    
    	<URL:http://sunsolve.sun.com/sunsolve/pubpatches/patches.html>

B.  Checksums for the patches listed in this bulletin are available via 
    World Wide Web at:

    	<URL:http://sunsolve.sun.com/sunsolve/pubpatches/patches.html>

C.  Sun security bulletins are available via World Wide Web at:

	<URL:http://sunsolve.sun.com/sunsolve/secbulletins>
	
D.  Sun Security Coordination Team's PGP key is available via World Wide Web 
    at:

	<URL:http://sunsolve.sun.com/sunsolve/secbulletins/SunSCkey.txt>
		    	    	    
E.  To report or inquire about a security problem with Sun software, contact 
    one or more of the following:
  
        - Your local Sun answer centers
        - Your representative computer security response team, such as CERT 
        - Sun Security Coordination Team. Send email to:
	
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________________________________________________________________________________

Copyright 1998 Sun Microsystems, Inc. All rights reserved. Sun, 
Sun Microsystems, Solaris and SunOS are trademarks or registered trademarks 
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Security Bulletin may be reproduced and distributed, provided that this 
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