__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN VMWare Products Shared Folders "MultiByteToWideChar()' Variant Vulnerability [Security Focus 27944] February 25, 2008 21:00 GMT Number S-197 ______________________________________________________________________________ PROBLEM: Multiple VMWare products are prone to a directory-traversal vulnerability that affects shared folders. PLATFORM: VMWare Workstation 6.0.2, 5.5.4, and earlier VMWare Player 2.0.2, 1.0.4, and earlier VMWare ACE 2.0.2, 1.0.2, and earlier DAMAGE: Attackers could gain full read and write access to the fileystem of the host operating system. SOLUTION: Upgrade to the apporpriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Attackers who can access a guest operating ASSESSMENT: system can exploit this issue to gain full read and write access to the filesystem of the host operating system. Successful attacks could compromise the affected host OS. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-197.shtml ORIGINAL BULLETIN: http://www.securityfocus.com/bid/27944/discuss CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-1744 ______________________________________________________________________________ [***** Start Security Focus 27944 *****] VMware Products Shared Folders 'MultiByteToWideChar()' Variant Directory Traversal Vulnerability Multiple VMware products are prone to a directory-traversal vulnerability that affects shared folders. Attackers who can access a guest operating system can exploit this issue to gain full read and write access to the filesystem of the host operating system. Successful attacks could compromise the affected host OS. Other attacks are possible. NOTE: This vulnerability occurs only on Windows hosts when 'Shared Folders' is enabled and when a shared folder exists. The issue affects the following: VMware Workstation 6.0.2, 5.5.4, and earlier VMware Player 2.0.2, 1.0.4, and earlier VMware ACE 2.0.2, 1.0.2, and earlier. NOTE: This issue occurs because of a fix that was introduced to address a similar issue (CVE-2007-1744) that is documented in BID 23721 (VMware Workstation Shared Folders Directory Traversal Vulnerability). VMware Products Shared Folders 'MultiByteToWideChar()' Variant Directory Traversal Vulnerability Bugtraq ID: 27944 Class: Access Validation Error CVE: CVE-2008-0923 Remote: Yes Local: No Published: Feb 24 2008 12:00AM Updated: Feb 25 2008 07:22PM Credit: Core Security Technologies reported this issue. Vulnerable: VMWare Workstation 6.0.2 VMWare Workstation 6.0.1 VMWare Workstation 6.0 VMWare Workstation 5.5.4 VMWare Workstation 5.5.3 build 34685 VMWare Workstation 4.5.2 VMWare Player 2.0.2 VMWare Player 2.0.1 VMWare Player 2.0 VMWare Player 1.0.4 VMWare Player 1.0.3 VMWare Player 1.0.2 VMWare Player 1.0.1 Build 19317 VMWare ACE 2.0.2 VMWare ACE 2.0.1 VMWare ACE 2.0 VMWare ACE 1.0.2 VMWare ACE 1.0 [***** End Security Focus 27944 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Security Focus 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. 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