CVE-2016-2120

HIGH
7.5
CVSS Score
Published: November 1, 2018 at 01:00 PM UTC
Updated: June 17, 2026 at 12:43 AM UTC
3 products affected across 2 vendorsDebian LinuxAuthoritativePdns

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

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.

Affected

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

v ≤ 3.4.104.0.0 ≤ v ≤ 4.0.1
v ≤ 3.4.10v ≤ 4.0.1

Remediation

No guide yet

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

References (2)

x_refsource_CONFIRMIssue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2120
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
https://www.debian.org/security/2017/dsa-3764

CVSS

7.5HIGHredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

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