__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Sun Security Issue Involving the tcsh(1) ls-F Builtin on Solaris 8 [Sun Alert ID: 57455] December 23, 2003 18:00 GMT Number O-044 ______________________________________________________________________________ PROBLEM: A local unprivileged user may be able to create or remove files or gain privileges of another user, possibly root, if the tcsh(1) builtin command ls-F is used. PLATFORM: SPARC Solaris 8 without patch 110943-02 x86 Solaris 8 without patch 110944-02 DAMAGE: The files created or removed and privileges possibly gained would depend on the privileges and user-ID of the process that executed the tcsh(1) ls-F builtin command. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. A local unprivileged user may be able to ASSESSMENT: create or remove files or gain privileges of another user, possibly root. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-044.shtml ORIGINAL BULLETIN: Sun Alert ID: 57455 http://www.sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert %2F57455&zone_32=category%3Asecurity ______________________________________________________________________________ [***** Start Sun Alert ID: 57455 *****] Sun(sm) Alert Notification Sun Alert ID: 57455 Synopsis: Security Issue Involving the tcsh(1) ls-F builtin on Solaris 8 Category: Security Product: Solaris BugIDs: 4599390 Avoidance: Patch State: Resolved Date Released: 22-Dec-2003 Date Closed: 22-Dec-2003 Date Modified: 1. Impact A local unprivileged user may be able to create or remove files or gain privileges of another user, possibly root, if the tcsh(1) builtin command ls-F is used. The files created or removed and privileges possibly gained would depend on the privileges and user-ID of the process that executed the tcsh(1) ls-F builtin command. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 8 without patch 110943-02 x86 Platform * Solaris 8 without patch 110944-02 Note: Solaris 7 and Solaris 9 are not affected by this issue. 3. Symptoms There are no reliable symptoms that would show the described issue has been exploited to gain unauthorized elevated privileges to a host. Solution Summary Top 4. Relief/Workaround To prevent this issue from occurring, do not utilize the tcsh(1) ls-F builtin directly and avoid any tcsh(1) functionality which uses the ls-F builtin such as filename completion (done by typing "^D"). 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 8 with patch 110943-02 or later x86 Platform * Solaris 8 with patch 110944-02 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: 57455 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Sun Microsystems 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. 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