Test ID:	1.3.6.1.4.1.25623.1.0.703764
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DSA-3764-1)
Summary:	The remote host is missing an update for the Debian 'pdns' package(s) announced via the DSA-3764-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'pdns' package(s) announced via the DSA-3764-1 advisory. Vulnerability Insight: Multiple vulnerabilities have been discovered in pdns, an authoritative DNS server. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2016-2120 Mathieu Lafon discovered that pdns does not properly validate records in zones. An authorized user can take advantage of this flaw to crash server by inserting a specially crafted record in a zone under their control and then sending a DNS query for that record. CVE-2016-7068 Florian Heinz and Martin Kluge reported that pdns parses all records present in a query regardless of whether they are needed or even legitimate, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the pdns server, resulting in a partial denial of service if the system becomes overloaded. CVE-2016-7072 Mongo discovered that the webserver in pdns is susceptible to a denial-of-service vulnerability, allowing a remote, unauthenticated attacker to cause a denial of service by opening a large number of TCP connections to the web server. CVE-2016-7073 / CVE-2016-7074 Mongo discovered that pdns does not sufficiently validate TSIG signatures, allowing an attacker in position of man-in-the-middle to alter the content of an AXFR. For the stable distribution (jessie), these problems have been fixed in version 3.4.1-4+deb8u7. For the unstable distribution (sid), these problems have been fixed in version 4.0.2-1. We recommend that you upgrade your pdns packages. Affected Software/OS: 'pdns' package(s) on Debian 8. Solution: Please install the updated package(s). CVSS Score: 7.8 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2016-2120 Debian Security Information: DSA-3764 (Google Search) https://www.debian.org/security/2017/dsa-3764 Common Vulnerability Exposure (CVE) ID: CVE-2016-7068 Debian Security Information: DSA-3763 (Google Search) https://www.debian.org/security/2017/dsa-3763 Common Vulnerability Exposure (CVE) ID: CVE-2016-7072 Common Vulnerability Exposure (CVE) ID: CVE-2016-7073 Common Vulnerability Exposure (CVE) ID: CVE-2016-7074
Copyright	Copyright (C) 2017 Greenbone AG

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