CVE-2016-6172

MEDIUM

PowerDNS <4.0.1 - DoS

Title source: llm

Description

PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.

References (11)

[Third Party Advisory] http://lists.opensuse.org/opensuse-updates/2016-08/msg00085.html

[Mailing List] http://www.openwall.com/lists/oss-security/2016/07/06/3

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1036242

[Release Notes] https://doc.powerdns.com/md/changelog/#powerdns-authoritative-server-401

[Issue Tracking] https://github.com/PowerDNS/pdns/issues/4128

[Issue Tracking] https://github.com/PowerDNS/pdns/issues/4133

[Issue Tracking] https://github.com/PowerDNS/pdns/pull/4134

[Patch] https://github.com/sischkg/xfer-limit/blob/master/README.md

View Patch ZIP pw:eip

[Mailing List, Third Party Advisory] https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/91678

[Third Party Advisory] http://www.debian.org/security/2016/dsa-3664

Scores

CVSS v3 6.8

EPSS 0.0001

EPSS Percentile 2.6%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Classification

CWE

CWE-400

Status published

Affected Products (4)

opensuse/leap

opensuse/opensuse

powerdns/authoritative_server < 4.0.0

n/a/n/a

Timeline

Published Sep 26, 2016

Tracked Since Feb 18, 2026