__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Possible Network Port Theft in Solaris [Sun Alert ID: 57766] April 19, 2005 17:00 GMT Number P-186 ______________________________________________________________________________ PROBLEM: A vulnerability was found in Solaris 8 and 9 that applies to network services which run on non-privileged ports such as NFS or NIS, and network server systems that allow user logins. PLATFORM: Solaris 8 and 9 DAMAGE: Local unprivileged users may be able to start processes on non-privileged network ports. By "stealing" the port, these processes may act as modified or "trojaned" versions of the service that typically runs on that port. This condition could lead to service disruption, a sensitive information leak, or possible compromise of remote systems. SOLUTION: Apply available security updates. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Local unprivileged users can disrupt ASSESSMENT: services, capture sensitive information, or compromise remote systems. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/p-186.shtml ORIGINAL BULLETIN: http://www.sunsolve.sun.com/search/printfriendly.do? assetkey=1-26-57766-1 ______________________________________________________________________________ [***** Start Sun Alert ID: 57766 *****] Sun(sm) Alert Notification * Sun Alert ID: 57766 * Synopsis: Certain Network Services Disruptions or "Spoofs" Could Occur as a Result of Possible Network Port Theft * Category: Security * Product: Solaris * BugIDs: 5089150 * Avoidance: Patch * State: Resolved * Date Released: 18-Apr-2005 * Date Closed: 18-Apr-2005 * Date Modified: 1. Impact Local unprivileged users may be able to start processes on non- privileged network ports. By "stealing" the port, these processes may act as modified or "trojaned" versions of the service that typically runs on that port. This condition could lead to service disruption, a sensitive information leak, or possible compromise of remote systems. Note: This issue only applies to network services which run on non-privileged ports such as NFS or NIS, and network server systems which allow user logins. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 8 without patch 116965-08 * Solaris 9 without patch 118305-02 x86 Platform * Solaris 8 without patch 116966-08 * Solaris 9 without patch 117470-01 Note: Solaris 7 and Solaris 10 are unaffected by this issue. 3. Symptoms Depending on the "trojan" that has been installed, there may be no obvious symptoms to indicate this issue has occurred. It is possible that services such as NIS may stop working for no apparent reason. 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 8 with patch 116965-08 or later * Solaris 9 with patch 118305-02 or later x86 Platform * Solaris 8 with patch 116966-08 or later * Solaris 9 with patch 117470-01 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. 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[***** End Sun Alert ID: 57766 *****] _______________________________________________________________________________ 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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