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[ GLSA 200704-18 ] Courier-IMAP: Remote execution of arbitrary code
From: Raphael Marichez <falco () gentoo org>
Date: Sun, 22 Apr 2007 23:18:36 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200704-18 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: Courier-IMAP: Remote execution of arbitrary code Date: April 22, 2007 Bugs: #168196 ID: 200704-18 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A vulnerability has been discovered in Courier-IMAP allowing for remote code execution with root privileges. Background ========== Courier-IMAP is an IMAP server which is part of the Courier mail system. It provides access only to maildirs. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-mail/courier-imap < 4.0.6-r2 >= 4.0.6-r2 Description =========== CJ Kucera has discovered that some Courier-IMAP scripts don't properly handle the XMAILDIR variable, allowing for shell command injection. Impact ====== A remote attacker could send specially crafted login credentials to a Courier-IMAP server instance, possibly leading to remote code execution with root privileges. Workaround ========== There is no known workaround at this time. Resolution ========== All Courier-IMAP users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/courier-imap-4.0.6-r2" Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200704-18.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 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. http://creativecommons.org/licenses/by-sa/2.5
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- [ GLSA 200704-18 ] Courier-IMAP: Remote execution of arbitrary code Raphael Marichez (Apr 23)