CVE-2017-15120
pdns-recursor - security update
7.5
HIGH
CVSS 3.1
EPSS 0.33%
Description
An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.
How to fix CVE-2017-15120
To remediate CVE-2017-15120, upgrade the affected package to a fixed version below.
- —upgrade to 4.1.0-1 or later
- —upgrade to 4.0.4-1+deb9u3 or later
Is CVE-2017-15120 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.1.0-1
- from 0, < 4.0.4-1+deb9u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |