- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200605-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: pdnsd: Denial of Service and potential arbitrary code execution Date: May 10, 2006 Bugs: #131341 ID: 200605-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== pdnsd is vulnerable to a buffer overflow that may result in arbitrary code execution. Background ========== pdnsd is a proxy DNS server with permanent caching that is designed to cope with unreachable DNS servers. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/pdnsd < 1.2.4 >= 1.2.4 Description =========== The pdnsd team has discovered an unspecified buffer overflow vulnerability. The PROTOS DNS Test Suite, by the Oulu University Secure Programming Group (OUSPG), has also revealed a memory leak error within the handling of the QTYPE and QCLASS DNS queries, leading to consumption of large amounts of memory. Impact ====== An attacker can craft malicious DNS queries leading to a Denial of Service, and potentially the execution of arbitrary code. Workaround ========== There is no known workaround at this time. Resolution ========== All pdnsd users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/pdnsd-1.2.4-r1" References ========== [ 1 ] CVE-2006-2076 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2076 [ 2 ] CVE-2006-2077 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2077 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200605-10.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 2006 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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