__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Lookup-el [Debian Security Advisory DSA-1269-1] March 22, 2007 15:00 GMT Number R-186 ______________________________________________________________________________ PROBLEM: Lookup, a search interface to electronic disctionaries on emacsen, creates a temporary file in an insecure fashion when the ndeb-binary feature is used. PLATFORM: Debian GNU/Linux 3.1 (sarge) DAMAGE: Allows a local attacker to craft a symlink attack to overwrite arbitrary files. SOLUTION: Upgrade to the appriopriate version. ______________________________________________________________________________ VULNERABILITY The risk is LOW. Allows overwrite of arbitrary files. ASSESSMENT: ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/r-186.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2007/dsa-1269 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-0237 ______________________________________________________________________________ [***** Start Debian Security Advisory DSA-1269-1 *****] Debian Security Advisory DSA-1269-1 lookup-el -- insecure temporary file Date Reported: 18 Mar 2007 Affected Packages: lookup-el Vulnerable: Yes Security database references: In Mitre's CVE dictionary: CVE-2007-0237. More information: Tatsuya Kinoshita discovered that Lookup, a search interface to electronic dictionaries on emacsen, creates a temporary file in an insecure fashion when the ndeb-binary feature is used, which allows a local attacker to craft a symlink attack to overwrite arbitrary files. For the stable distribution (sarge) this problem has been fixed in version 1.4-3sarge1. For the testing distribution (etch) this problem has been fixed in version 1.4-5. For the unstable distribution (sid) this problem has been fixed in version 1.4-5. We recommend that you upgrade your lookup-el package. Fixed in: Debian GNU/Linux 3.1 (sarge) Source: http://security.debian.org/pool/updates/main/l/lookup-el/lookup-el_1.4-3sarge1.dsc http://security.debian.org/pool/updates/main/l/lookup-el/lookup-el_1.4-3sarge1.diff.gz http://security.debian.org/pool/updates/main/l/lookup-el/lookup-el_1.4.orig.tar.gz Architecture-independent component: http://security.debian.org/pool/updates/main/l/lookup-el/lookup-el_1.4-3sarge1_all.deb MD5 checksums of the listed files are available in the original advisory. [***** End Debian Security Advisory DSA-1269-1 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Debian 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) R-176: Apple Security Update 2007-003 R-177: Linux Kernel Vulnerable to DoS via ipv6_getsockopt_sticky() Function R-178: Bind Security Update R-179: Sun Java System Web Server Vulnerability R-180: Kernel Security and Bug Fix Update R-181: OpenBSD's IPV6 MBUFS Vulnerability R-182: OPC Server Vulnerability R-183: OpenAFS Vulnerability R-184: libwpd Security Update R-185: CA BrightStor ARCserve Backup Tape Engine and Portmapper Vulnerabilitites