CVE-2016-7068

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.

CVSS v3.0 7.5 HIGH
CVSS v2.0 7.8 HIGH

7.5^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

7.8^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 10.0 / Impact : 6.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

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

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:powerdns:authoritative::::::::
	cpe:2.3:a:powerdns:recursor::::::::
	cpe:2.3:a:powerdns:recursor::::::::
	cpe:2.3:a:powerdns:authoritative::::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Information

Published : 2018-09-11 06:29

Updated : 2019-10-09 16:19

NVD link : CVE-2016-7068

Mitre link : CVE-2016-7068

JSON object : View

CWE

CWE-400

Uncontrolled Resource Consumption

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Products Affected

debian

debian_linux

powerdns

authoritative
recursor

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