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[ GLSA 200510-04 ] Texinfo: Insecure temporary file creation
From: Thierry Carrez <koon () gentoo org>
Date: Wed, 05 Oct 2005 13:35:37 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200510-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Texinfo: Insecure temporary file creation Date: October 05, 2005 Bugs: #106105 ID: 200510-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Texinfo is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files. Background ========== Texinfo is the official documentation system created by the GNU project. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-apps/texinfo < 4.8-r1 >= 4.8-r1 Description =========== Frank Lichtenheld has discovered that the "sort_offline()" function in texindex insecurely creates 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 texindex is executed, this would result in the file being overwritten with the rights of the user running the application. Workaround ========== There is no known workaround at this time. Resolution ========== All Texinfo users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/texinfo-4.8-r1" References ========== [ 1 ] CAN-2005-3011 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-3011 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200510-04.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 200510-04 ] Texinfo: Insecure temporary file creation Thierry Carrez (Oct 05)