CVE-2016-7068

State: Published
Severity: 5.3 Medium
Published: Sep 11, 2018
Updated: Aug 6, 2024
Reserved: Aug 23, 2016

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.

Scores

CVSS	Score	Vector	Source
3.0	5.3 Medium	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	redhat

Weaknesses

CWE-20

Affected Products

Product	Versions
pdnsOpen-Xchange	3.4.11Affected 4.0.2Affected 3.7.4Affected 4.0.4Affected

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068
DSA-3764vendor-advisory
DSA-3763vendor-advisory
https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/

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