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Fencer Vulns
medium 4.3

CVE-2020-17482 json

An issue has been found in PowerDNS Authoritative Server before 4.3.1 where an authorized user with the ability to insert crafted records i…

published 2020-10-02 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-9432

cvss
4.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

An issue has been found in PowerDNS Authoritative Server before 4.3.1 where an authorized user with the ability to insert crafted records into a zone might be able to leak the content of uninitialized memory.

Patch / fix

  • powerdns authoritative 4.3.1
  • pdns Debian 14, Debian 13, Debian 12 4.3.1-1

debian advisories DEBIAN-CVE-2020-17482

  • pdns Ubuntu Pro 16.04 LTS 4.0.0~alpha2-3ubuntu0.1~esm1
  • pdns Ubuntu Pro 18.04 LTS 4.1.1-1ubuntu0.1~esm1
  • pdns Ubuntu Pro 20.04 LTS 4.2.1-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2020-17482

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • pdns OpenStack Cloud 9 4.1.8-3.6.1
  • pdns OpenStack Cloud 8, HPE Helion OpenStack 8 4.1.2-3.9.1

suse advisories SUSE-SU-2020:2785-1SUSE-SU-2020:2718-1

  • pdns openSUSE Tumbleweed 4.5.1-1.5
  • pdns Package Hub 15 SP2, Package Hub 15 SP1, Package Hub 12 SP1 +2 more 4.3.1-bp152.2.5.1

opensuse advisories openSUSE-SU-2024:11156-1openSUSE-SU-2020:1556-1

  • pdns Alpine 3.10, Alpine 3.9 4.1.14-r0
  • pdns Alpine 3.12, Alpine 3.11 4.2.3-r0
  • pdns Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 4.3.1-r0

alpine advisories ALPINE-CVE-2020-17482

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-17482 updated cvss 4.3

pdns: leaking uninitialised memory through crafted zone records

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.59% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N

Classification

Weakness
  • CWE-908 Use of Uninitialized Resource

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.