__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Security Vulnerability in The "printd" Daemon [Sun Alert ID: 101842] August 18, 2005 18:00 GMT Number P-280 ______________________________________________________________________________ PROBLEM: A local or remote unprivileged user may be able to remove any file on the system due to a security vulnerability in the "printd" daemon. PLATFORM: SPARC Platform Solaris 7 without patch 107115-19 Solaris 8 without patch 109320-16 Solaris 9 without patch 113329-15 Solaris 10 without patch 120467-01 x86 Platform Solaris 7 without patch 107116-19 Solaris 8 without patch 109321-16 Solaris 9 without patch 114980-16 Solaris 10 without patch 120468-01 DAMAGE: A local or remote unprivileged user may be able to remove any file on the system. SOLUTION: Update to current version. ______________________________________________________________________________ VULNERABILITY The risk is LOW. A local or remote unprivileged user may be ASSESSMENT: able to remove any file on the system . This issue only occurs on systems that have the printer package "SUNWpcu" installed. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/p-280.shtml ORIGINAL BULLETIN: http://www.sunsolve.sun.com/search/document.do?assetkey= 1-26-101842-1&searchclause=101842 ______________________________________________________________________________ [***** Start Sun Alert ID: 101842 *****] Sun(sm) Alert Notification * Sun Alert ID: 101842 * Synopsis: Security Vulnerability in The "printd" Daemon * Category: Security * Product: Solaris 9 Operating System, Solaris 10 Operating System, Solaris 7 Operating System, Solaris 8 Operating System * BugIDs: 6289134 * Avoidance: Patch * State: Resolved * Date Released: 08-Aug-2005 * Date Closed: 08-Aug-2005 * Date Modified: 1. Impact A local or remote unprivileged user may be able to remove any file on the system due to a security vulnerability in the "printd" daemon. Sun acknowledges, with thanks, H.D. Moore of Metaspoilt.com, for bringing this issue to our attention. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 7 without patch 107115-19 * Solaris 8 without patch 109320-16 * Solaris 9 without patch 113329-15 * Solaris 10 without patch 120467-01 x86 Platform * Solaris 7 without patch 107116-19 * Solaris 8 without patch 109321-16 * Solaris 9 without patch 114980-16 * Solaris 10 without patch 120468-01 This issue only occurs on systems that have the printer package "SUNWpcu" installed. 3. Symptoms There are no reliable symptoms that would indicate the described issue has been exploited. Solution Summary Top 4. Relief/Workaround To work around the described issue, one of the following options can be applied: Option 1: Temporarily rename the following file used by the "printd" daemon: /usr/lib/print/bsd-adaptor/bsd_cascade.so.1 Note: Renaming this file will cause systems configured to use the cascade spooler to fail to send print requests to the configured remote host. Option 2: Disable the BSD print protocol adaptor (in.lpd(1M)) by doing the following: For pre-Solaris 10 systems: 1. Edit the "/etc/inetd.conf" file and comment out the following line by adding the "#" symbol to the beginning of the line as shown: #printer stream tcp6 nowait root /usr/lib/print/in.lpd in.lpd 2. Tell the inetd(1M) process to reread the newly modified "/etc/inetd.conf" file by sending it a hangup signal, SIGHUP: # /usr/bin/pkill -HUP inetd For systems running Solaris 10 or above: Execute the following command: # svcadm disable svc:/application/print/rfc1179 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 7 with patch 107115-19 or later * Solaris 8 with patch 109320-16 or later * Solaris 9 with patch 113329-15 or later * Solaris 10 with patch 120467-01 or later x86 Platform * Solaris 7 with patch 107116-19 or later * Solaris 8 with patch 109321-16 or later * Solaris 9 with patch 114980-16 or later * Solaris 10 with patch 120468-01 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 2000-2005 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved. [***** End Sun Alert ID: 101842 *****] _______________________________________________________________________________ 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. 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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