Published:
17 December 1998
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-98.192 -- Sun Security Bulletin #00180 Security Vulnerability with BIND RE: CERT Advisory CA-98.05 18 December 1998 =========================================================================== Sun Microsystems, Inc. has released the following bulletin concerning vulnerabilities discoverd in SunOS and Solaris's implementations of BIND, one of which may allow a remote attacker to gain root access to a DNS name server, and another which may allow a Denial-of-Service attack to corrupt DNS record data or crash the DNS server. SunOS and Solaris are not vulnerable to third vulnerability described in the CERT advisory: CERT Advisory CA-98.05. - --------------------------BEGIN INCLUDED TEXT------------------ - -----BEGIN PGP SIGNED MESSAGE----- ________________________________________________________________________________ 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." Sun makes no warranties of any kind whatsoever with respect to the information contained in this Security Bulletin. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY WARRANTY OF NON-INFRINGEMENT OR IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE HEREBY DISCLAIMED AND EXCLUDED TO THE EXTENT ALLOWED BY APPLICABLE LAW. IN NO EVENT WILL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES HOWEVER CAUSED AND REGARDLESS OF ANY THEORY OF LIABILITY ARISING OUT OF THE USE OF OR INABILITY TO USE THE INFORMATION CONTAINED IN THIS SECURITY BULLETIN, EVEN IF SUN MICROSYSTEMS, INC. HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. If any of the above provisions are held to be in violation of applicable law, void, or unenforceable in any jurisdiction, then such provisions are waived to the extent necessary for this disclaimer to be otherwise enforceable in such jurisdiction. ________________________________________________________________________________ 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: 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 with a subject line (not body) containing one of the following commands: Command Information Returned/Action Taken _______ _________________________________ help An explanation of how to get information key Sun Security Coordination Team's PGP key list A list of current security topics query [topic] The email is treated as an inquiry and is forwarded to the Security Coordination Team report [topic] The email is treated as a security report and is forwarded to the Security Coordination Team. Please encrypt sensitive mail using Sun Security Coordination Team's PGP key send topic A short status summary or bulletin. For example, to retrieve a Security Bulletin #00138, supply the following in the subject line (not body): send #138 subscribe Sender is added to our mailing list. To subscribe, supply the following in the subject line (not body): subscribe cws your-email-address Note that your-email-address should be substituted by your email address. unsubscribe Sender is removed from the CWS mailing list. ________________________________________________________________________________ Copyright 1998 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. - -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBNnk1e7dzzzOFBFjJAQEFkAQArmTsv36WRmFQbgHjWaPM9jcJ1W7comXj aNxzht6LFTCqdBvnAI/MsTKw/+y7J2v1QB8A5TMk5YEgfmG86zCmnM6pvLfFR1e7 yUX8OYTRbGcMK1mIJ79uvsxXfVp5zNexPDRYXBneY645ujjbJCK0fz0I3dYbwsnG CNJ30olpCqQ= =h7Ia - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It will not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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