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[ GLSA 200804-09 ] am-utils: Insecure temporary file creation
From: Pierre-Yves Rofes <py () gentoo org>
Date: Thu, 10 Apr 2008 22:19:11 +0200
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200804-09 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: am-utils: Insecure temporary file creation Date: April 10, 2008 Bugs: #210158 ID: 200804-09 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== am-utils creates temporary files insecurely allowing local users to overwrite arbitrary files via a symlink attack. Background ========== am-utils is a collection of utilities for use with the Berkeley Automounter. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-fs/am-utils < 6.1.5 >= 6.1.5 Description =========== Tavis Ormandy discovered that, when creating temporary files, the 'expn' utility does not check whether the file already exists. Impact ====== A local attacker could exploit the vulnerability via a symlink attack to overwrite arbitrary files. Workaround ========== There is no known workaround at this time. Resolution ========== All am-utils users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-fs/am-utils-6.1.5" References ========== [ 1 ] CVE-2008-1078 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1078 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200804-09.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 2008 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/2.5 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFH/nY/uhJ+ozIKI5gRArfpAKCZ53ZEUZJA6a3qPX0Dlnn6SQyNKwCdHtj0 f1YXGG/CnRhI5f5WtWEIjlo= =1SAy -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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- [ GLSA 200804-09 ] am-utils: Insecure temporary file creation Pierre-Yves Rofes (Apr 10)