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Fencer Intel
high 7.0

CVE-2018-1046 json

pdns before version 4.1.2 is vulnerable to a buffer overflow in dnsreplay.

published 2018-07-16 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11702

cvss
7.0
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

pdns before version 4.1.2 is vulnerable to a buffer overflow in dnsreplay. In the dnsreplay tool provided with PowerDNS Authoritative, replaying a specially crafted PCAP file can trigger a stack-based buffer overflow, leading to a crash and potentially arbitrary code execution. This buffer overflow only occurs when the -ecs-stamp option of dnsreplay is used.

Patch / fix

  • powerdns pdns 4.1.2
  • pdns Debian 14, Debian 13, Debian 12 4.1.2-1

debian advisories DEBIAN-CVE-2018-1046

  • pdns Ubuntu Pro 18.04 LTS 4.1.1-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2018-1046

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 4.1.2-3.3.1

suse advisories SUSE-SU-2018:1660-1

  • pdns openSUSE Tumbleweed 4.5.1-1.5
  • pdns Package Hub 12 SP1 4.1.2-8.1

opensuse advisories openSUSE-SU-2024:11156-1openSUSE-SU-2018:1462-1

  • powerdns Arch Linux 4.1.2-1

arch linux advisories AVG-686

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-2018-1046 updated cvss 7.0

pdns: Buffer overflow in dnsreplay

  • 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

1.41% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 7.0 CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • [UNKNOWN] pdns

Classification

Weakness

References

Sources

Fencer Intel 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.