National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-7068 Detail

Current Description

An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.5 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Nist CVSS score does not match with CNA score
CNA:  Red Hat, Inc.
Base Score: 5.3 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068 Issue Tracking Third Party Advisory
https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/ Vendor Advisory
https://www.debian.org/security/2017/dsa-3763 Third Party Advisory
https://www.debian.org/security/2017/dsa-3764 Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption NIST  
CWE-20 Improper Input Validation Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
3.4.11
 cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.0.0
Up to (excluding)
4.0.2
 cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
3.7.4
 cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.0.0
Up to (excluding)
4.0.4

Configuration 2 ( hide )
 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-7068
NVD Published Date:
09/11/2018
NVD Last Modified:
10/09/2019