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[ GLSA 200804-22 ] PowerDNS Recursor: DNS Cache Poisoning
From: Robert Buchholz <rbu () gentoo org>
Date: Fri, 18 Apr 2008 16:25:14 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200804-22 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: PowerDNS Recursor: DNS Cache Poisoning Date: April 18, 2008 Bugs: #215567 ID: 200804-22 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Use of insufficient randomness in PowerDNS Recursor might lead to DNS cache poisoning. Background ========== The PowerDNS Recursor is an advanced recursing nameserver. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/pdns-recursor < 3.1.5 >= 3.1.5 Description =========== Amit Klein of Trusteer reported that insufficient randomness is used to calculate the TRXID values and the UDP source port numbers. Impact ====== A remote attacker could send malicious answers to insert arbitrary DNS data into the cache. These attacks would in turn help an attacker to perform man-in-the-middle and site impersonation attacks. Workaround ========== There is no known workaround at this time. Resolution ========== All PowerDNS Recursor users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/pdns-recursor-3.1.5" References ========== [ 1 ] CVE-2008-1637 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1637 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200804-22.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
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- [ GLSA 200804-22 ] PowerDNS Recursor: DNS Cache Poisoning Robert Buchholz (Apr 18)