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[ GLSA 200511-06 ] fetchmail: Password exposure in fetchmailconf
From: Thierry Carrez <koon () gentoo org>
Date: Sun, 06 Nov 2005 19:20:43 +0100
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200511-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: fetchmail: Password exposure in fetchmailconf Date: November 06, 2005 Bugs: #110366 ID: 200511-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== fetchmailconf fails to properly handle file permissions, temporarily exposing sensitive information to other local users. Background ========== fetchmail is a utility that retrieves and forwards mail from remote systems using IMAP, POP, and other protocols. It ships with fetchmailconf, a graphical utility used to create configuration files. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-mail/fetchmail < 6.2.5.2-r1 >= 6.2.5.2-r1 Description =========== Thomas Wolff discovered that fetchmailconf opens the configuration file with default permissions, writes the configuration to it, and only then restricts read permissions to the owner. Impact ====== A local attacker could exploit the race condition to retrieve sensitive information like IMAP/POP passwords. Workaround ========== Run "umask 077" to temporarily strengthen default permissions, then run "fetchmailconf" from the same shell. Resolution ========== All fetchmail users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/fetchmail-6.2.5.2-r1" References ========== [ 1 ] Fetchmail Security Advisory http://fetchmail.berlios.de/fetchmail-SA-2005-02.txt [ 2 ] CVE-2005-3088 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3088 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200511-06.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 200511-06 ] fetchmail: Password exposure in fetchmailconf Thierry Carrez (Nov 06)