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[ GLSA 200508-19 ] lm_sensors: Insecure temporary file creation
From: Thierry Carrez <koon () gentoo org>
Date: Tue, 30 Aug 2005 16:28:04 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200508-19 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: lm_sensors: Insecure temporary file creation Date: August 30, 2005 Bugs: #103568 ID: 200508-19 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== lm_sensors is vulnerable to linking attacks, potentially allowing a local user to overwrite arbitrary files. Background ========== lm_sensors is a software package that provides drivers for monitoring the temperatures, voltages, and fans of Linux systems with hardware monitoring devices. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-apps/lm_sensors < 2.9.1-r1 >= 2.9.1-r1 Description =========== Javier Fernandez-Sanguino Pena has discovered that lm_sensors insecurely creates temporary files with predictable filenames when saving configurations. Impact ====== A local attacker could create symbolic links in the temporary file directory, pointing to a valid file somewhere on the filesystem. When the pwmconfig script of lm_sensors is executed, this would result in the file being overwritten with the rights of the user running the script, which typically is the root user. Workaround ========== There is no known workaround at this time. Resolution ========== All lm_sensors users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/lm_sensors-2.9.1-r1" References ========== [ 1 ] CAN-2005-2672 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2672 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200508-19.xml 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 security () gentoo org or alternatively, you may file a bug at http://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. http://creativecommons.org/licenses/by-sa/2.0
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- [ GLSA 200508-19 ] lm_sensors: Insecure temporary file creation Thierry Carrez (Aug 30)