- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200904-05 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: ntp: Certificate validation error Date: April 05, 2009 Bugs: #254098 ID: 200904-05 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== An error in the OpenSSL certificate chain validation in ntp might allow for spoofing attacks. Background ========== ntp contains the client and daemon implementations for the Network Time Protocol. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/ntp < 4.2.4_p6 >= 4.2.4_p6 Description =========== It has been reported that ntp incorrectly checks the return value of the EVP_VerifyFinal(), a vulnerability related to CVE-2008-5077 (GLSA 200902-02). Impact ====== A remote attacker could exploit this vulnerability to spoof arbitrary names to conduct Man-In-The-Middle attacks and intercept sensitive information. Workaround ========== There is no known workaround at this time. Resolution ========== All ntp users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/ntp-4.2.4_p6" References ========== [ 1 ] CVE-2008-5077 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5077 [ 2 ] CVE-2009-0021 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0021 [ 3 ] GLSA 200902-02 http://www.gentoo.org/security/en/glsa/glsa-200902-02.xml Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200904-05.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 2009 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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