__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Sun Solaris Runtime Linker ld.so.1(1) Vulnerability [Sun Alert ID: 55680] July 30, 2003 16:00 GMT Number N-131 ______________________________________________________________________________ PROBLEM: A buffer overflow vulnerability has been identified in the runtime linker ld.so.1(1). The runtime linker ld.so.1(1) processes dynamic executables and shared objects at runtime, binding them to create a runnable process. PLATFORM: Solaris 2.6, 7, 8, and 9 DAMAGE: Local attackers could gain root access. SOLUTION: Apply appropriate patches. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. A local attacker could exploit this ASSESSMENT: vulnerability if at least one setuid root dynamically linked program exists on the system. This is the case on virtually all default implementations of Solaris 8 and 9. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/n-131.shtml ORIGINAL BULLETIN: http://sunsolve.sun.com/search/document.do?assetkey=1-26-55680-1 ______________________________________________________________________________ REVISION HISTORY: 01/27/04 - modified URL listed in Impact. [***** Start Sun Alert ID: 55680 *****] Sun(sm) Alert Notification Sun Alert ID: 55680 Synopsis: Security Vulnerability in the Solaris Runtime Linker ld.so.1(1) Category: Security Product: Solaris BugIDs: 4872634 Avoidance: Patch State: Resolved Date Released: 29-Jul-2003 Date Closed: 29-Jul-2003 Date Modified: 1. Impact An unprivileged local user may be able to gain unauthorized root privileges due to a buffer overflow in the runtime linker ld.so.1(1). Sun acknowledges with thanks, Jouko Pynnönen (jouko@iki.fi) for bringing this issue to our attention and iDEFENSE Inc. (www.idefense.com) for coordinating the release of this issue. This issue is described in iDEFENSE Advisory located at: http://www.idefense.com/application/poi/display? 2. Contributing Factors This issue can occur in the following releases: SPARC Platform Solaris 2.6 with patch 107733-10 and without patch 107733-11 Solaris 7 with patches 106950-14 through 106950-22 and without patch 106950-23 Solaris 8 with patches 109147-07 through 109147-24 and without patch 109147-25 Solaris 9 without patch 112963-09 x86 Platform Solaris 2.6 with patch 107734-10 and without patch 107734-11 Solaris 7 with patches 106951-14 through 106951-22 and without patch 106951-23 Solaris 8 with patches 109148-07 through 109148-24 and without patch 109148-25 Solaris 9 without patch 113986-05 3. Symptoms There are no reliable symptoms that would show the 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 107733-11 or later Solaris 7 with patch 106950-23 or later Solaris 8 with patch 109147-25 or later Solaris 9 with patch 112963-09 or later x86 Platform Solaris 2.6 with patch 107734-11 or later Solaris 7 with patch 106951-23 or later Solaris 8 with patch 109148-25 or later Solaris 9 with patch 113986-05 or later Change History 20-Jan-2004: Modified URL listed in Impact 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. 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[***** End Sun Alert ID: 55680 *****] _______________________________________________________________________________ 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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