__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Earth Resources Mapping NCSView ActiveX Vulnerabilities [US-CERT Vulnerability Note VU#589188] September 17, 2007 19:00 GMT Number R-354 ______________________________________________________________________________ PROBLEM: The Earth Resource Mapping NCSView ActiveX control contains multiple stack buffer overflows, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. PLATFORM: NCSView ActiveX 3.4.0.241 DAMAGE: Can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. SOLUTION: Apply the appropriate upgrade. ______________________________________________________________________________ VULNERABILITY The risk is LOW. Can allow a remote, unauthenticated attacker ASSESSMENT: to execute arbitrary code on a vulnerable system. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/r-354.shtml ORIGINAL BULLETIN: http://www.kb.cert.org/vuls/id/589188 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-4470 ______________________________________________________________________________ [***** Start US-CERT Vulnerability Note VU#589188 *****] Vulnerability Note VU#589188 Earth Resource Mapping NCSView ActiveX control stack buffer overflows Overview The Earth Resource Mapping NCSView ActiveX control contains multiple stack buffer overflows, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. I. Description The Earth Resource Mapping NCSView ActiveX control, which is provided by NCSView.dll, is used to view maps in the Internet Explorer web browser. The NCSView ActiveX control contains multiple stack buffer overflows. II. Impact A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system with privileges of the user. III. Solution Apply an update This vulnerability is addressed in version 3.4.0.242 of the NCSView ActiveX control. This control is included with version 8.1 of the ER Mapper ECW JPEG 2000 Plug-in package. More details are available in the ER Mapper security advisory. If you are unable to install an updated version of the control, please consider the following workarounds Disable the NCSView ActiveX control in Internet Explorer The vulnerable ActiveX control can be disabled in Internet Explorer by setting the kill bit for the following CLSID: {8EC18CE2-D7B4-11D2-88C8-006008A717FD} More information about how to set the kill bit is available in Microsoft Support Document 240797. Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for this control: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\ {8EC18CE2-D7B4-11D2-88C8-006008A717FD}] "Compatibility Flags"=dword:00000400 Disable ActiveX Disabling ActiveX controls in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this and other ActiveX vulnerabilities. Instructions for disabling ActiveX in the Internet Zone can be found in the "Securing Your Web Browser" document. Systems Affected Vendor Status Date Updated ER Mapper Vulnerable 17-Sep-2007 References http://www.cert.org/tech_tips/securing_browser/#Internet_Explorer http://www.ermapper.com/KnowledgeBase.aspx?kb=236 http://demo.ermapper.com/ecwplugins/DownloadPlugin.htm http://support.microsoft.com/kb/240797 Credit This vulnerability was reported by Will Dormann of the CERT/CC This document was written by Will Dormann. Other Information Date Public 09/06/2007 Date First Published 09/06/2007 05:06:02 PM Date Last Updated 09/17/2007 CERT Advisory CVE Name CVE-2007-4470 Metric 1.81 Document Revision 7 [***** End US-CERT Vulnerability Note VU#589188 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of US-CERT 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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