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CVE-2016-2120 Details

Description

An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2120	CVE	Issue TrackingThird Party Advisory
https://www.debian.org/security/2017/dsa-3764	CVE	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2120	[email protected]	Issue TrackingThird Party Advisory
https://www.debian.org/security/2017/dsa-3764	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-190	Integer Overflow or Wraparound	[email protected]
CWE-190	Integer Overflow or Wraparound	[email protected]

Affected Products

Product	Versions
powerdns authoritative	<= 3.4.10 >= 4.0.0, <= 4.0.1
CPE cpe:2.3:a:powerdns:authoritative:::::::: Remediation No remediation found in references.
debian debian linux	8.0
CPE cpe:2.3:o:debian:debian_linux:8.0:::::::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Oct 9, 2019	CVE Modified	[email protected]
Jan 29, 2019	Initial Analysis	[email protected]
Nov 2, 2018	CVE Modified	[email protected]