-----BEGIN PGP SIGNED MESSAGE----- =============================================================================== Security Advisory CERT-NL =============================================================================== Author/Source : Niels den Otter Index : S-98-76 Distribution : World Page : 1 Classification: External Version: 1 Subject : SunOS vulnerability in dtmail Date : 18-Dec-98 =============================================================================== By courtesy of Sun Microsystems we received information on a vulnerability in Sun's dtmail. Several buffer overflows have been found in dtmail with regards to its handling of attachments. A remote attacker may exploit these vulnerabilities to execute arbitrary instructions with the privileges of mail and that of the user reading the email. CERT-NL recommends to install the patches as advised by Sun. ________________________________________________________________________________ Sun Microsystems, Inc. Security Bulletin Bulletin Number: #00181 Date: December 17, 1998 Cross-Ref: Title: dtmail ________________________________________________________________________________ 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 dtmail program is the mail user agent for the Common Desktop Environment (CDE). dtmail provides an intuitive, easy-to-use user interface for reading, sending, and managing electronic mail. Several buffer overflows have been found in dtmail with regards to its handling of attachments. A remote attacker may exploit these vulnerabilities to execute arbitrary instructions with the privileges of mail and that of the user reading the email. 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, and 2.4_x86 running CDE 3. Recommendations Sun recommends that you install the respective patches immediately on affected systems. CDE Version Patch ID _________________ _________ 1.2 105338-14 1.2_x86 105339-12 1.0.2 104178-03 1.0.2_x86 104185-03 1.0.1 106920-01 1.0.1_x86 106921-01 _______________________________________________________________________________ APPENDICES A. Patches listed in this bulletin are available to all Sun customers via World Wide Web at: B. Checksums for the patches listed in this bulletin are available via World Wide Web at: C. Sun security bulletins are available via World Wide Web at: D. Sun Security Coordination Team's PGP key is available via World Wide Web at: 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. ============================================================================== CERT-NL thanks SUN Microsystems, Inc for bringing this information to our attention. ============================================================================== 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://www.surfnet.nl/surfnet/security/cert-nl.html ftp://ftp.surfnet.nl/surfnet/net-security 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 52 87 92 82 ALTIJD BEREIKBAAR EMERGENCIES : +31 6 52 87 92 82 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. ============================================================================== -----BEGIN PGP SIGNATURE----- Version: 2.6.3ia Charset: latin1 iQCVAwUBNnpN01pSTqmIRWKVAQHXeQQAr8QTjFFuIdkXDc8Y+xIIw+ikg5wTeYqq TQiOAUymMpdq8E/8ohXjF1kG09CDzfjLj7LrhLqOV58s0KOV5NJLyUQIOak++SAl q17IntucuW0HBvhhFFZ+mZ8MleudmC1VB1pRyqm6g8pAjBSj32bkZhtJOd00FT+x J3Y0Twsz6/M= =aGL6 -----END PGP SIGNATURE-----