__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN ICQ Parsing in ISS Products May Lead to Buffer Overflow [ISS Security Alert of March 18, 2004] March 19, 2004 19:00 GMT Number O-104 ______________________________________________________________________________ PROBLEM: A vulnerability was discovered in the ICQ instant messaging protocol parsing routines of the ISS Protocol Analysis Module (PAM) component. The PAM module is a shared component of all current ISS host, server, and network protection software and devices. PLATFORM: RealSecure® Network 7.0, XPU 22.11 and before RealSecure Server Sensor 7.0 XPU 22.11 and before RealSecure Server Sensor 6.5 for Windows SR 3.10 and before Proventia™ A Series XPU 22.11 and before Proventia G Series XPU 22.11 and before Proventia M Series XPU 1.9 and before RealSecure Desktop 7.0 ebl and before RealSecure Desktop 3.6 ecf and before RealSecure Guard 3.6 ecf and before RealSecure Sentry 3.6 ecf and before BlackICE™ Agent for Server 3.6 ecf and before BlackICE PC Protection 3.6 ccf and before BlackICE Server Protection 3.6 ccf and before DAMAGE: The vulnerability results in incorrect parsing of the ICQ protocol which may lead to a buffer overflow condition, making it possible for a remote attacker to cause memory corruption. SOLUTION: Install available updates. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. There is incomplete boundary checking when ASSESSMENT: parsing certain protocol fields embedded within ICQ response data. As a result, it may be possible for a remote attacker to cause memory corruption with the potential for remote exploitation. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-104.shtml ORIGINAL BULLETIN: http://xforce.iss.net/xforce/alerts/id/166 ______________________________________________________________________________ Visit ISS X-Force web site for publication of their information. http://xforce.iss.net/xforce/alerts/id/166 _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Internet Security Systems 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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