__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Sun cachefs Patches May Overwrite inetd.conf File [Sun Alert ID: 56300] August 19, 2003 22:00 GMT Number N-134 ______________________________________________________________________________ PROBLEM: The inetd.conf file may get overwritten during installation of certain cachefs patches, changing the system configuration back to the default. PLATFORM: Solaris 2.6 and 7 systems DAMAGE: The resulting new "inetd.conf" file may re-enable services that were previously disabled, such as ftp and security features like TCPwrappers may be disabled. SOLUTION: Apply patches as stated in Sun's Alert Notification. ______________________________________________________________________________ VULNERABILITY The risk is LOW. Services previously disabled can be reenabled. ASSESSMENT: Intruders would have to scan the system to find the open services, which are not necessarily vulnerable to attack. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/n-134.shtml ORIGINAL BULLETIN: http://www.sunsolve.sun.com/pub-cgi/retrieve.pl?doc =fsalert%2F56300&zone_32=category%3Asecurity ______________________________________________________________________________ [***** Start Sun Alert ID: 56300 *****] Sun(sm) Alert Notification Sun Alert ID: 56300 Synopsis: Solaris 2.6 and 7 cachefs Patches May Overwrite the inetd.conf(4) File Category: Security Product: Solaris BugIDs: 4839365 Avoidance: Patch State: Resolved Date Released: 18-Aug-2003 Date Closed: 18-Aug-2003 Date Modified: 1. Impact On Solaris 2.6 and Solaris 7 systems, the inetd.conf(4) file may get erroneously overwritten during installation of certain cachefs patches. The resulting new "inetd.conf" file may re-enable services that were previously disabled (e.g. for security reasons). 2. Contributing Factors This issue can occur in the following releases: SPARC Platform Solaris 2.6 with patch 105693-13 and without patch 105693-14 Solaris 7 with patch 108800-02 and without patch 108800-03 x86 Platform Solaris 2.6 with patch 105694-13 and without patch 105694-14 Solaris 7 with patch 108801-02 and without patch 108801-03 Note: Solaris 8 and 9 are not affected by this issue. The cachefs patches are part of the current "Recommended & Security Patches" cluster. 3. Symptoms After installation of one of the above listed patches, some services may be enabled which were previously disabled. The symptoms experienced will depend upon which services had been disabled. Solution Summary Top 4. Relief/Workaround To work around the described issue, make a backup copy of the existing inetd.conf(4) file before installing the cachefs patches and then restore the inetd.conf(4) file after patch installation. For example: # cp /etc/inet/inetd.conf /etc/inetd/inetd.conf.prepatch # patchadd # cp /etc/inet/inetd.conf.prepatch /etc/inetd/inetd.conf If the Solaris 2.6 or 7 cachefs patches have already been installed on the system, review the inetd.conf(4) file for entries which may have been changed by the patch installation. 5. Resolution This issue is addressed in the following releases: SPARC Platform Solaris 2.6 with patch 105693-14 or later Solaris 7 with patch 108800-03 or later x86 Platform Solaris 2.6 with patch 105694-14 or later Solaris 7 with patch 108801-03 or later This Sun Alert notification is being provided to you on an "AS IS" basis. This Sun Alert notification may contain information provided by third parties. The issues described in this Sun Alert notification may or may not impact your system(s). Sun makes no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun proprietary and confidential information. It is being provided to you pursuant to the provisions of your agreement to purchase services from Sun, or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun Alert notification may only be used for the purposes contemplated by these agreements. Copyright 2000-2003 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved. [***** End Sun Alert ID: 56300 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Sun Microsystems, Inc. for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. 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