Sun Microsystems is aware of the recent "SANS Flash Alert For Solaris" message that has been posted to several security maillists in the last few days. The problems cited in the posting have also been reported by CERT, NIPC and several other organizations. The CERT Advisory for this issues described in this posting, is at: http://www.cert.org/advisories/CA-2000-01.html To clarify the contents of the posting: The problems that are described in the the CERT advisory and SANS posting DO NOT CONSTITUTE either a "virus" or a "worm"-like security intrusion, NOR do they constitute a "Y2K" issue. The problems described in these advisories are caused by software tools that are known as "trojan horses" - tools that are deliberately and manually installed by malicious users at sites that are attacked. The software does not spread on its own; it is only installed when someone intentionally issues commands to manually install it. The tools are known as Trinoo, TFN, and TFN2000, and Stacheldraht; these tools are distributed denial-of-service attack tools - they have a master component and a client component. Trinoo clients are installed on systems AFTER they have been compromised by an intruder. Systems have been compromised because of exploitation of known vulnerabilities such as rpc.cmsd, rpc.statd port-bounce and tooltalk buffer-overflow. The clients then flood networks or targetted systems at the request of the master machine, ultimately resulting in Denial of all Service to or from the target systems. Users can protect themselves from this software by applying software patches that are ALREADY available to prevent the exploitation of these vulnerabilities (see attached). Customers should also install all applicable security patches that Sun has released. The security bulletins and appropriate patch-ids and instructions on how to obtain these patches are given below; further Sun Security Bulletins will be posted if changes or updates are made to this information. To report or inquire about a security problem with Sun software, please contact one or more of the following: - Your local Sun Solution Center - Your representative computer security response team, such as CERT - the Sun Security Coordination Team; send email to: security-alertat_private To receive information or to subscribe to our CWS (Customer Warning System) mailing list, please see the details listed below. ____________________________________________________________________________ Sun Microsystems, Inc. Security Bulletin Bulletin Number: #00186 Date: June 7, 1999 Cross-Ref: Title: rpc.statd ____________________________________________________________________________ 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. Bulletins Topics Sun announces the release of patches for Solaris(tm) 2.6, 2.5.1, 2.5, 2.4, and 2.3 (SunOS(tm) 5.6, 5.5.1, 5.5, 5.4 and 5.3), which relate to a vulnerability involving rpc.statd. Sun recommends that you install the patches listed in section 4 immediately on systems running SunOS 5.6, 5.5.1, 5.5, 5.4, and 5.3. 2. Who is Affected Vulnerable: SunOS 5.6, 5.6_x86, 5.5.1, 5.5.1_x86, 5.5, 5.5_x86, 5.4, 5.4_x86, and 5.3. Not vulnerable: All other supported versions of SunOS. 3. Understanding the Vulnerability rpc.statd is the NFS file-locking status monitor. It interacts with rpc.lockd to provide the crash and recovery functions for file locking across NFS. rpc.statd allows indirect RPC calls to other RPC services. Because rpc.statd runs as root, this allows remote attackers to bypass access controls of other RPC services. 4. List of Patches The following patches are available in relation to the above problem. OS Version Patch ID __________ _________ SunOS 5.6 106592-02 SunOS 5.6_x86 106593-02 SunOS 5.5.1 104166-04 SunOS 5.5.1_x86 104167-04 SunOS 5.5 103468-04 SunOS 5.5_x86 103469-05 SunOS 5.4 102769-07 SunOS 5.4_x86 102770-07 SunOS 5.3 102932-05 ___________________________________________________________________________ ___________________________________________________________________________ Sun Microsystems, Inc. Security Bulletin Bulletin Number: #00188 Date: August 25, 1999 Cross-Ref: CERT CA-99-08 Title: rpc.cmsd ____________________________________________________________________________ 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. Bulletin Topics Sun announces the release of patches for Solaris(tm) 7, 2.6, 2.5.1, 2.5, 2.4, 2.3 (SunOS(tm) 5.7, 5.6, 5.5.1, 5.5, 5.4, 5.3), SunOS 4.1.4, and 4.1.3_U1, which relate to a vulnerability involving rpc.cmsd. Sun recommends that you: Install the OpenWindows patches listed in section 4 immediately on systems running SunOS 5.5.1, 5.5, 5.4, 5.3, 4.1.4, and 4.1.3_U1. Install the Common Desktop Environment (CDE) patches listed in section 4 immediately on systems running SunOS 5.7 and 5.6. Install the CDE patches listed in section 4 immediately on systems running SunOS 5.5.1, 5.5, and 5.4 with CDE 1.0.2 or 1.0.1 installed. 2. Who is Affected Vulnerable: SunOS 5.7, 5.7_x86, 5.6, 5.6_x86, 5.5.1, 5.5.1_x86, 5.5, 5.5_x86, 5.4, 5.4_x86, 5.3, 4.1.4, and 4.1.3_U1. Not vulnerable: All other supported versions of SunOS. 3. Understanding the Vulnerability The rpc.cmsd is a small database manager for appointment and resource-scheduling data. Its primary client is Calendar Manager in OpenWindows, and Calendar in CDE. A buffer overflow vulnerability has been discovered which may be exploited to execute arbitrary instructions and gain root access. 4. List of Patches The following patches are available in relation to the above problem. OpenWindows: SunOS version Patch ID _____________ _________ SunOS 5.5.1 104976-04 SunOS 5.5.1_x86 105124-03 SunOS 5.5 103251-09 SunOS 5.5_x86 103273-07 SunOS 5.4 102030-10 SunOS 5.4_x86 102031-08 SunOS 5.3 101513-14 SunOS 4.1.4 100523-25 SunOS 4.1.3_U1 100523-25 CDE: SunOS versions CDE version Patch ID ______________ ___________ ________ 5.7 1.3 107022-04 5.7_x86 1.3_x86 107023-04 5.6 1.2 105566-07 5.6_x86 1.2_x86 105567-08 5.5.1, 5.5, 5.4 1.0.2 103670-07 5.5.1_x86, 5.5_x86, 5.4_x86 1.0.2_x86 103717-08 5.5, 5.4 1.0.1 103671-07 5.5_x86, 5.4_x86 1.0.1_x86 103718-08 ___________________________________________________________________________ APPENDICES A. Patches listed in this bulletin are available to all Sun customers at: http://sunsolve.sun.com/pub-cgi/show.pl?target=patches/patch-license&nav=pub-pat ches 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/pub-cgi/secBulletin.pl 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-alertat_private F. To receive information or subscribe to our CWS (Customer Warning System) mailing list, send email to: security-alertat_private 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 1999 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. Sun Security Coordination Team
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