Test ID:	1.3.6.1.4.1.25623.1.0.106238
Category:	Denial of Service
Title:	PowerDNS Authoritative Server DoS Vulnerabilities
Summary:	PowerDNS Authoritative Server is prone to two denial of service; vulnerabilities.
Description:	Summary: PowerDNS Authoritative Server is prone to two denial of service vulnerabilities. Vulnerability Insight: Two issues have been found in PowerDNS Authoritative Server allowing a remote, unauthenticated attacker to cause an abnormal load on the PowerDNS backend by sending crafted DNS queries, which might result in a partial denial of service if the backend becomes overloaded. SQL backends for example are particularly vulnerable to this kind of unexpected load if they have not been dimensioned for it. The first issue is based on the fact that PowerDNS Authoritative Server accepts queries with a qname's length larger than 255 bytes (CVE-2016-5426). The second issue is based on the fact that PowerDNS Authoritative Server does not properly handle dot inside labels (CVE-2016-5427). Vulnerability Impact: A remote attacker may cause a partial DoS condition. Affected Software/OS: PowerDNS Authoritative Server 3.4.9 and prior. Solution: Upgrade to version 3.4.10 or later CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2016-5426 BugTraq ID: 92917 http://www.securityfocus.com/bid/92917 Debian Security Information: DSA-3664 (Google Search) http://www.debian.org/security/2016/dsa-3664 http://www.openwall.com/lists/oss-security/2016/09/09/3 http://www.securitytracker.com/id/1036761 Common Vulnerability Exposure (CVE) ID: CVE-2016-5427
Copyright	Copyright (C) 2016 Greenbone AG

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