__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Sun Security Vulnerability in "/usr/lib/print/conv_fix" [Sun Alert ID: 57509] March 2, 2004 22:00 GMT Number O-089 ______________________________________________________________________________ PROBLEM: The "usr/lib/print/conv_fix" command is invoked by the conv_lpd(1M) script and contains a security vulnerability. PLATFORM: Solaris 7, 8, 9 (SPARC and x86 Platforms) DAMAGE: If the conv_lpd(1M) script is executed as "root" user, it may be possible for an unprivileged local user to exploit this vulnerability to overwrite or create any file on the system. This could lead to unauthorized elevated privileges or allow a a Denial of Service against the system. SOLUTION: Install the security patch. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. A local unprivileged user may be able to ASSESSMENT: gain unauthorized root privileges and/or it may result in a denial of service. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-089.shtml ORIGINAL BULLETIN: Sun Alert ID: 57509 http://au.sunsolve.sun.com/search/document.do?assetkey=1-26-57509-1 ______________________________________________________________________________ [***** Start Sun Alert ID: 57509 *****] Sun(sm) Alert Notification Sun Alert ID: 57509 Synopsis: Security Vulnerability in "/usr/lib/print/conv_fix" May Allow Unauthorized Privileges and/or Denial of Service Category: Security Product: Solaris BugIDs: 4705947, 4705948 Avoidance: Patch, Workaround State: Resolved Date Released: 26-Feb-2004 Date Closed: 26-Feb-2004 Date Modified: 1. Impact The "/usr/lib/print/conv_fix" command is invoked by the conv_lpd(1M) script and contains a security vulnerability. If the conv_lpd(1M) script is executed as the "root" user, it may be possible for unprivileged local users to exploit this vulnerability to overwrite or create any file on the system. This could lead to unauthorized elevated privileges or allow a Denial of Service (DoS) against the system. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform Solaris 7 without patch 107115-14 Solaris 8 without patch 109320-09 Solaris 9 without patch 113329-05 x86 Platform Solaris 7 without patch 107116-14 Solaris 8 without patch 109321-09 Solaris 9 without patch 114980-05 3. Symptoms There are no reliable symptoms that would indicate the described issue has been exploited, as it depends on which file is overwritten or created. 4. Relief/Workaround To work around the described issue, run conv_lpd(1M) as a non-root user. 5. Resolution This issue is addressed in the following releases: SPARC Platform Solaris 7 with patch 107115-14 or later Solaris 8 with patch 109320-09 or later Solaris 9 with patch 113329-05 or later x86 Platform Solaris 7 with patch 107116-14 or later Solaris 8 with patch 109321-09 or later Solaris 9 with patch 114980-05 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: 57509 *****] _______________________________________________________________________________ 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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