- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200812-16 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Dovecot: Multiple vulnerabilities Date: December 14, 2008 Bugs: #240409, #244962, #245316 ID: 200812-16 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities were found in the Dovecot mailserver. Background ========== Dovecot is an IMAP and POP3 server written with security primarily in mind. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-mail/dovecot < 1.1.7-r1 >= 1.1.7-r1 Description =========== Several vulnerabilities were found in Dovecot: * The "k" right in the acl_plugin does not work as expected (CVE-2008-4577, CVE-2008-4578) * The dovecot.conf is world-readable, providing improper protection for the ssl_key_password setting (CVE-2008-4870) * A permanent Denial of Service with broken mail headers is possible (CVE-2008-4907) Impact ====== These vulnerabilities might allow a remote attacker to cause a Denial of Service, to circumvent security restrictions or allow local attackers to disclose the passphrase of the SSL private key. Workaround ========== There is no known workaround at this time. Resolution ========== All Dovecot users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/dovecot-1.1.7-r1" Users should be aware that dovecot.conf will still be world-readable after the update. If employing ssl_key_password, it should not be used in dovecot.conf but in a separate file which should be included with "include_try". References ========== [ 1 ] CVE-2008-4577 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4577 [ 2 ] CVE-2008-4578 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4578 [ 3 ] CVE-2008-4870 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4870 [ 4 ] CVE-2008-4907 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4907 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200812-16.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@xxxxxxxxxx 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
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