CVEvulnerability

CVE-2016-7068

7.5 HIGH Published 2018-09-11 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-09-11
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
5.3 MEDIUM — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.0 ([email protected])
7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
7.8 HIGH — AV:N/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
CWE-20, CWE-400

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.

Affected configurations

• powerdns authoritative (< 3.4.11) • powerdns authoritative (>= 4.0.0 < 4.0.2) • powerdns recursor (< 3.7.4) • powerdns recursor (>= 4.0.0 < 4.0.4) • debian debian linux 8.0

Related

Weakness · CWE (2)

  • CWE-20 Improper Input Validation weakness
  • CWE-400 Uncontrolled Resource Consumption weakness

References