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Fencer Vulns
medium 5.3

CVE-2018-10851 json

PowerDNS Authoritative Server 3.3.0 up to 4.1.4 excluding 4.1.5 and 4.0.6, and PowerDNS Recursor 3.2 up to 4.1.4 excluding 4.1.5 and 4.0.9,…

published 2018-11-29 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-2920

cvss
5.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
6.0%
EPSS 6.0% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

PowerDNS Authoritative Server 3.3.0 up to 4.1.4 excluding 4.1.5 and 4.0.6, and PowerDNS Recursor 3.2 up to 4.1.4 excluding 4.1.5 and 4.0.9, are vulnerable to a memory leak while parsing malformed records that can lead to remote denial of service.

Patch / fix

  • pdns Debian 14, Debian 13, Debian 12 4.1.5-1
  • pdns-recursor Debian 14, Debian 13, Debian 12 4.1.7-1

debian advisories DEBIAN-CVE-2018-10851

  • 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-recursor Ubuntu Pro 16.04 LTS 4.0.0~alpha2-2ubuntu0.1+esm1
  • pdns-recursor Ubuntu Pro 18.04 LTS 4.1.1-2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2018-10851

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 8, HPE Helion OpenStack 8 4.1.2-3.6.1
  • ardana-db OpenStack Cloud 8, HPE Helion OpenStack 8 8.0+git.1583944923.03cca6c-3.31.1
  • ardana-mq OpenStack Cloud 8, HPE Helion OpenStack 8 8.0+git.1583944811.dc14403-3.19.1
  • memcached OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 1.5.17-3.3.1
  • zookeeper OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 3.4.10-3.6.1
  • crowbar-ha OpenStack Cloud Crowbar 8 5.0+git.1585316176.344190f-3.32.1
  • python-amqp OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 2.4.2-3.9.1
  • crowbar-core OpenStack Cloud Crowbar 8 5.0+git.1585575551.16781d00d-3.38.1

suse advisories SUSE-SU-2020:1066-1SUSE-RU-2019:0863-1SUSE-SU-2019:0863-1

  • pdns openSUSE Tumbleweed 4.5.1-1.5
  • pdns-recursor openSUSE Tumbleweed 4.5.5-1.3
  • pdns Package Hub 15 4.1.2-bp150.2.3.1
  • pdns-recursor Package Hub 15 4.1.2-bp150.2.3.1
  • pdns Package Hub 12 SP1 4.1.5-14.1
  • pdns-recursor Package Hub 12 SP1 4.1.8-13.1

opensuse advisories openSUSE-SU-2024:11156-1openSUSE-SU-2024:11157-1openSUSE-SU-2018:4175-1openSUSE-SU-2018:4177-1openSUSE-SU-2018:4073-1openSUSE-SU-2018:4062-1

  • pdns Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 4.1.5-r0
  • pdns Alpine 3.7, Alpine 3.6, Alpine 3.5 4.0.6-r0
  • pdns-recursor Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 4.1.7-r0
  • pdns-recursor Alpine 3.7, Alpine 3.6, Alpine 3.5 4.0.9-r0
  • pdns-recursor Alpine 3.8 4.1.8-r0

alpine advisories ALPINE-CVE-2018-10851

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

  • powerdns Arch Linux 4.1.5-1
  • powerdns-recursor Arch Linux 4.1.5-1

arch linux advisories AVG-804AVG-805

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-2018-10851 updated cvss 5.3

pdns: Memory leak while parsing malformed 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

6.04% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 5.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • The PowerDNS Project pdns
  • The PowerDNS Project pdns-recursor

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-772 Missing Release of Resource after Effective Lifetime

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.