CVE-2016-2120 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2120 https://www.debian.org/security/2017/dsa-3764

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5