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CVE-2016-2120

Published: 1 November 2018

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.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
pdns
Launchpad, Ubuntu, Debian
impish Not vulnerable
(4.0.2-1)
xenial Needed

kinetic Not vulnerable
(4.0.2-1)
lunar Not vulnerable
(4.0.2-1)
artful Ignored
(end of life)
bionic Not vulnerable
(4.0.2-1)
cosmic Not vulnerable
(4.0.2-1)
disco Not vulnerable
(4.0.2-1)
eoan Not vulnerable
(4.0.2-1)
focal Not vulnerable
(4.0.2-1)
groovy Not vulnerable
(4.0.2-1)
hirsute Not vulnerable
(4.0.2-1)
jammy Not vulnerable
(4.0.2-1)
precise Ignored
(end of life)
trusty Does not exist
(trusty was needed)
upstream
Released (4.0.2-1)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
mantic Not vulnerable
(4.0.2-1)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H