__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Gnumeric XLS HLINK Opcode Handling Vulnerability [Security Focus 27536] February 1, 2008 19:00 GMT Number S-155 ______________________________________________________________________________ PROBLEM: Gnumeric is prone to a remote arbitrary code execution vulnerability. PLATFORM: Gnumeric 1.6.3 DAMAGE: Execute arbitrary code. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Attackers may exploit this issue to corrupt ASSESSMENT: memory and execute machine code in the context of the affected application. Failed exploit attempts will result in denial-of-service conditions. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-155.shtml ORIGINAL BULLETIN: http://www.securityfocus.com/bid/27536/discuss ______________________________________________________________________________ [***** Start Security Focus 27536 *****] Gnumeric XLS HLINK Opcode Handling Remote Arbitrary Code Execution Vulnerability Gnumeric is prone to a vulnerability that lets remote attakers execute arbitrary code. Attackers may exploit this issue to corrupt memory and execute machine code in the context of the affected application. Failed exploit attempts will result in denial -of-service conditions. The issue affects Gnumeric 1.6.3; other versions may also be vulnerable. Bugtraq ID: 27536 Class: Boundary Condition Error CVE: Remote: Yes Local: No Published: Jan 31 2008 12:00AM Updated: Jan 31 2008 07:07PM Credit: The vendor and Secunia Research disclosed this issue. Vulnerable: GNU Gnumeric 1.6.3 + Gentoo Linux 1.4 _rc3 + Gentoo Linux 1.4 _rc2 + Gentoo Linux 1.4 _rc1 + Gentoo Linux 1.4 Not Vulnerable: GNU Gnumeric 1.8.1 + Gentoo Linux 1.4 _rc3 + Gentoo Linux 1.4 _rc2 + Gentoo Linux 1.4 _rc1 + Gentoo Linux 1.4 [***** End Security Focus 27536 *****] _______________________________________________________________________________ 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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