__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Sun aspppls(1M) does not create the temporary file /tmp/.asppp.fifo safely [Sun Alert ID: 46903] October 2, 2003 17:00 GMT Number O-001 ______________________________________________________________________________ PROBLEM: May be possible to overwrite or create any file on a Solaris 8 system due to a security issue with aspppls(1M). PLATFORM: SPARC Solaris 8, INTEL Solaris 8 (Note-Solaris 2.5.1, 2.6, 7, & 9 are not affected by this issue.) DAMAGE: A unprivileged local user may gain unauthorized root privileges. SOLUTION: Apply upgrades or there are workarounds available. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. It is possible for an attacker to gain ASSESSMENT: unauthorized root privileges. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-001.shtml ORIGINAL BULLETIN: http://www.sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert %2F46903&zone_32=category%3Asecurity ______________________________________________________________________________ [***** Start Sun Alert ID: 46903 *****] Sun(sm) Alert Notification Sun Alert ID: 46903 Synopsis: aspppls(1M) Does Not Create the Temporary File /tmp/.asppp.fifo Safely Category: Security Product: Solaris BugIDs: 4683015 Avoidance: Patch State: Resolved Date Released: 09-Sep-2002 Date Closed: 09-Sep-2002 Date Modified: 1. Impact A local unprivileged user may be able overwrite or create any file on a Solaris 8 system which could lead to a unprivileged local user gaining unauthorized root privileges due to a security issue with aspppls(1M). Sun acknowledges with thanks, Kevin Kotas of eSecurityOnline for bringing this issue to our attention. 2. Contributing Factors This issue can occur in the following releases: SPARC Solaris 8 without patch 111299-04 Intel Solaris 8 without patch 111300-04 Note: Solaris 2.5.1, 2.6, 7, and 9 are not affected by this issue. 3. Symptoms There are no predictable symptoms that would show the described issue has been exploited, as it depends on which file is overwritten or created. Solution Summary Top 4. Relief/Workaround If asynchronous PPP is not being used at the customer site, the setuid permissions on the aspppls(1M) binary could be removed via the following command run as root: # chmod u-s /usr/sbin/aspppls The asynchronous PPP packages could also be removed if asynchronous PPP is not being used via the following command run as root: # pkgrm SUNWapppr SUNWpppdu 5. Resolution This issue is addressed in the following releases: SPARC Solaris 8 with patch 111299-04 or later Intel Solaris 8 with patch 111300-04 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 2001, 2002 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved [***** End Sun Alert ID: 46903 *****] _______________________________________________________________________________ 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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