__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Sun Xsun Server in Direct Graphics Access (DGA) Vulnerabilities [Sun Alert ID: 57419] December 3, 2003 18:00 GMT Number O-033 ______________________________________________________________________________ PROBLEM: On Solaris systems which run Xsun(1) Solaris X11 server, unprivileged local users may be able to overwrite or create any file on the system and this may also allow a local user to crash the Xsun process of any user of a DGA application, a type of "Denial-of-Service". SOFTWARE: Solaris 2.6, 7, 8, 9 DAMAGE: Xsun is normally started by "root" user from "dtlogin" and typically has full root privileges. SOLUTION: Apply the appropriate patch. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Xsun is normally started by "root" user ASSESSMENT: from "dtlogin" and typically has full root privileges. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-033.shtml ORIGINAL BULLETIN: Sun Alert ID: 57419 http://www.sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert %2F57419&zone_32=category%3Asecurity ______________________________________________________________________________ [***** Start Sun Alert ID: 57419 *****] Sun(sm) Alert Notification Sun Alert ID: 57419 Synopsis: Running Xsun Server in Direct Graphics Access (DGA) Mode May Allow Creation of Temporary Files Insecurely or Allow a "Denial of Service" Attack Category: Security Product: Solaris, Xserver BugIDs: 4680913 Avoidance: Patch State: Resolved Date Released: 02-Dec-2003 Date Closed: 02-Dec-2003 Date Modified: 1. Impact On Solaris systems which run the Xsun(1) Solaris X11 server, unprivileged local users may be able to overwrite or create any file on the system due to a security vulnerability involving Xsun(1) and Direct Graphics Access (DGA) mode. Xsun is normally started by "root" user from "dtlogin", and typically has full root privileges. This issue may also allow a local user to crash the Xsun process of any user of a DGA application, a type of "Denial-of-Service". 2. Contributing Factors This issue can occur in the following releases: SPARC Platform Solaris 2.6 without patch 105633-64 Solaris 7 without patch 108376-44 Solaris 8 without patch 108652-72 Solaris 9 without patch 112785-25 x86 Platform Solaris 2.6 without patch 106248-49 Solaris 7 without patch 108377-39 Solaris 8 without patch 108653-61 Solaris 9 without patch 112786-15 These vulnerabilities may be present during the use of any application that uses DGA - including Java applications and applications that use OpenGL (3D accelerated graphics - commonly used in CAD applications). 3. Symptoms There are no predictable symptoms that would indicate the above described issue has been exploited. Solution Summary Top 4. Relief/Workaround There is no workaround. Please see the "Resolution" section below. 5. Resolution This issue is addressed in the following releases: SPARC Platform Solaris 2.6 with patch 105633-64 or later Solaris 7 with patch 108376-44 or later Solaris 8 with patch 108652-72 or later Solaris 9 with patch 112785-25 or later x86 Platform Solaris 2.6 with patch 106248-49 or later Solaris 7 with patch 108377-39 or later Solaris 8 with patch 108653-61 or later Solaris 9 with patch 112786-15 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: 57419 *****] _______________________________________________________________________________ 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. LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) O-023: Microsoft Word and Excel Vulnerabilities O-024: Microsoft Buffer Overrun in Microsoft FrontPage O-025: ISS PeopleSoft IClient Servlet Remote Command Execution Vulnerability O-026: Red Hat Updated PostgreSQL Packages Fix BUffer Overflow O-027: Red Hat Updated XFree86 Packages Provide Security and Bug Fixes O-028: Hewlett Packard dtmailpr O-029: un Security Vulnerability on Sun Systems with a PGX32 Frame Buffer O-030: Hewlett Packard VirtualVault OpenSSH Vulnerabilities O-031: Red Hat Updated 2.4 Kernel Fixes Privilege Escalation Security Vulnerability O-032: HP shar(1) Utility Vulnerability