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Gentoo GLSA-200710-22 Normal: TRAMP Insecure Temp File Creation

The TRAMP package for GNU Emacs insecurely creates temporary files.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200710-22 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: TRAMP: Insecure temporary file creation Date: October 20, 2007 Bugs: #194713 ID: 200710-22 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= The TRAMP package for GNU Emacs insecurely creates temporary files. Background ========= TRAMP is a remote file editing package for GNU Emacs, a highly extensible and customizable text editor. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emacs/tramp < 2.1.10-r2 > = 2.1.10-r2 *< 2.1 Description ========== Stefan Monnier discovered that the tramp-make-tramp-temp-file() function creates temporary files in an insecure manner. Impact ===== A local attacker could create symbolic links in the directory where the temporary files are written, pointing to a valid file somewhere on the filesystem that is writable by the user running TRAMP. When TRAMP writes the temporary file, the target valid file would then be overwritten with the contents of the TRAMP temporary file. Workaround ========= There is no known workaround at this time. Resolution ========= All TRAMP users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =app-emacs/tramp-2.1.10-r2" References ========= [ 1 ] CVE-2007-5377 https://www.cve.org/CVERecord?id=CVE-2007-5377 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200710-22 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 2007 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/2.5/ . The potential risk associated with the inadequate generation of transient files in TRAMP for GNU Emacs raises concerns about local exploitation that could compromise the integrity of files.. Gentoo Security, TRAMP Issue, Emacs Package, Insecure Handling. . LinuxSecurity.com Team

Oct 20, 2007 Gentoo