__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Logical Volume Manager (LVM) Vulnerability [Debian Security Advisory: DSA 583-1] November 4, 2004 19:00 GMT Number P-030 ______________________________________________________________________________ PROBLEM: A vulnerability in the LVM package was found where the existance of temporary files was not being checked. PLATFORM: Debian GNU/Linux 3.0 (woody) - lvm10 package DAMAGE: Local users can overwrite files using a symlink attack with the possibility of gaining escalated privileges. SOLUTION: Upgrade your lvm10 package. ______________________________________________________________________________ VULNERABILITY The risk is LOW. It is expected that LVM administrators are ASSESSMENT: highly trusted and competent users. Only a local user can exploit this vulnerability. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/p-030.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2004/dsa-583 CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CAN-2004-0972 ______________________________________________________________________________ [***** Start Debian Security Advisory: DSA 583-1 *****] Debian Security Advisory DSA-583-1 lvm10 -- insecure temporary directory Date Reported: 03 Nov 2004 Affected Packages: lvm10 Vulnerable: Yes Security database references: In the Debian bugtracking system: Bug 279229. In Mitre's CVE dictionary: CAN-2004-0972. More information: Trustix developers discovered insecure temporary file creation in a supplemental script in the lvm10 package that didn't check for existing temporary directories, allowing local users to overwrite files via a symlink attack. For the stable distribution (woody) this problem has been fixed in version 1.0.4-5woody2. For the unstable distribution (sid) this problem has been fixed in version 1.0.8-8. We recommend that you upgrade your lvm10 package. Fixed in: Debian GNU/Linux 3.0 (woody) Source: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2.dsc http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2.diff.gz http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4.orig.tar.gz Alpha: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_alpha.deb ARM: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_arm.deb Intel IA-32: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_ia64.deb HPPA: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_hppa.deb Motorola 680x0: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_m68k.deb Big endian MIPS: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_mips.deb Little endian MIPS: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/l/lvm10/lvm10_1.0.4-5woody2_sparc.deb MD5 checksums of the listed files are available in the original advisory. -------------------------------------------------------------------------------- This page is also available in the following languages: dansk Deutsch svenska How to set the default document language -------------------------------------------------------------------------------- To report a problem with the web site, e-mail debian-www@lists.debian.org. For other contact information, see the Debian contact page. Last Modified: Wed, Nov 3 18:42:23 UTC 2004 Copyright © 2004 SPI; See license terms Debian is a registered trademark of Software in the Public Interest, Inc. [***** End Debian Security Advisory: DSA 583-1 *****] _______________________________________________________________________________ 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. 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