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Gentoo GLSA-200504-20 Normal: openMosixview Symlink Attack Risk

openMosixview and the openMosixcollector daemon are vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files. [More...]. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200504-20 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: openMosixview: Insecure temporary file creation Date: April 21, 2005 Bugs: #86686 ID: 200504-20 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= openMosixview and the openMosixcollector daemon are vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files. Background ========= The openMosixview package contains several tools used to manage openMosix clusters, including openMosixview (the main monitoring and administration application) and openMosixcollector (a daemon collecting cluster and node information). Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-cluster/openmosixview < 1.5-r1 > = 1.5-r1 Description ========== Gangstuck and Psirac from Rexotec discovered that openMosixview insecurely creates several temporary files with predictable filenames. Impact ===== A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When openMosixView or the openMosixcollector daemon runs, this would result in the file being overwritten with the rights of the user running the utility, which could be the root user. Workaround ========= There is no known workaround at thistime. Resolution ========= All openMosixview users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =sys-cluster/openmosixview-1.5-r1" References ========= [ 1 ] CAN-2005-0894 https://www.cve.org/CVERecord?id=CAN-2005-0894 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200504-20 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org/. License ====== Copyright 2005 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.0/ . Discover details regarding a moderate severity alert for openMosixview that permits symbolic link vulnerabilities within Gentoo distributions. Immediate upgrade advised.. openmosixview, symlink attack, gentoo security advisory, software update, system management. . LinuxSecurity.com Team

Apr 21, 2005 Gentoo