__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN International Components for Unicode Library (libicu) Vulnerabilities [Security Focus 27455] January 29, 2008 21:00 GMT Number S-136 [REVISED 4 Mar 2008] ______________________________________________________________________________ PROBLEM: The International Components for Unicode library (libicu) is prone to multiple memory-corruption vulnerabilities. PLATFORM: libicu 3.8.1 and prior versions Debian GNU/Linux 4.0 (etch) DAMAGE: Allows remote attackers to corrupt and overflow memory and possibly execute remote code. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Successfully exploiting these issues allows ASSESSMENT: remote attackers to corrupt and overflow memory and possibly execute remote code. Failed exploit attempts will likely crash applications. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-136.shtml ORIGINAL BULLETIN: http://www.securityfocus.com/bid/27455/discuss ADDITIONAL LINK: http://www.debian.org/security/2008/dsa-1511 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-4770 CVE-2007-4771 ______________________________________________________________________________ REVISION HISTORY: 03/04/2008 - revised S-136 to add a link to Debian Security Advisory DSA-1511-1 for Debian GNU/Linux 4.0 (etch). [***** Start Security Focus 27455 *****] International Components for Unicode Library (libicu) Multiple Memory Corruption Vulnerabilities The International Components for Unicode library (libicu) is prone to multiple memory-corruption vulnerabilities. Successfully exploiting these issues allows remote attackers to corrupt and overflow memory and possibly execute remote code. Failed exploit attempts will likely crash applications. These issues affect libicu 3.8.1 and prior versions. Bugtraq ID: 27455 Class: Unknown CVE: CVE-2007-4770 CVE-2007-4771 Remote: Yes Local: No Published: Jan 25 2008 12:00AM Updated: Jan 28 2008 07:27PM Credit: Will Drewry is credited with the discovery of these issues. Vulnerable: RedHat Fedora 8 0 RedHat Fedora 7 0 RedHat Enterprise Linux Desktop Workstation 5 client RedHat Enterprise Linux Desktop 5 client RedHat Enterprise Linux 5 server MandrakeSoft Linux Mandrake 2008.0 x86_64 MandrakeSoft Linux Mandrake 2008.0 ICU Project International Components for Unicode 3.8.1 ICU Project International Components for Unicode 3.8 ICU Project International Components for Unicode 3.6 ICU Project International Components for Unicode 0 [***** End Security Focus 27455 *****] _______________________________________________________________________________ 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. 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. LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) S-127: GradMan 'info.php' Vulnerability S-128: AcuraCMS 'stat.php' Vulnerability S-129: Mantis Vulnerability S-130: ELOG Vulnerabilities S-131: BIND Vulnerabilities CIACTech08-001: Understanding PHP Exploits S-132: CIMPLICITY 6.1 Security Vulnerabilies S-133: Xine-lib Vulnerability S-134: FLAC Vulnerabilities S-135: libvorbis Vulnerabilities