CVE-2016-2120
pdns - security update
6.5
MEDIUM
CVSS 3.1
EPSS 0.13%
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.
How to fix CVE-2016-2120
To remediate CVE-2016-2120, upgrade the affected package to a fixed version below.
- —upgrade to 4.0.2-1 or later
- —upgrade to 3.1-4.1+deb7u3 or later
- —upgrade to 3.4.1-4+deb8u7 or later
Is CVE-2016-2120 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 4.0.2-1
- from 0, < 3.1-4.1+deb7u3
- from 0, < 3.4.1-4+deb8u7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |