CVE-2016-7068

MEDIUM
5.3
CVSS Score
Published: September 11, 2018 at 01:00 PM UTC
Updated: June 17, 2026 at 12:52 AM UTC
4 products affected across 3 vendorsDebian LinuxAuthoritativeRecursor

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Severity
MEDIUM5.3
Exploit prediction
EPSS 7%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.4.114.0.0 ≤ v < 4.0.2
Affected range stops below 3.4.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.0.2, so it looks safe — our inference, not a vendor statement
v < 3.7.44.0.0 ≤ v < 4.0.4
Affected range stops below 3.7.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.0.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

x_refsource_CONFIRMIssue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
https://www.debian.org/security/2017/dsa-3763
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
https://www.debian.org/security/2017/dsa-3764

CVSS

5.3MEDIUMredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20CWE-400

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