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Vulnerability record · CVE-2016-6172 · published 26 September 2016

CVE-2016-6172: Opensuse leap uncontrolled resource consumption vulnerability

Opensuse · Leap

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.

6.8 CVSS 3.0 Medium EPSS 3.8% · top 10.3% CWE-400 · Uncontrolled resource consumption
6.8CVSS 3.0 base score, v2 7.1
3.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
22References
17 Jun 2026Last modified by NVD

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.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-updates/2016-08/msg00085.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3664
http://www.openwall.com/lists/oss-security/2016/07/06/3 Mailing List
http://www.securityfocus.com/bid/91678
http://www.securitytracker.com/id/1036242
https://doc.powerdns.com/md/changelog/#powerdns-authoritative-server-401 Release Notes
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 Issue Tracking
https://github.com/sischkg/xfer-limit/blob/master/README.md Patch
https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-08/msg00085.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3664
http://www.openwall.com/lists/oss-security/2016/07/06/3 Mailing List
http://www.securityfocus.com/bid/91678
http://www.securitytracker.com/id/1036242
https://doc.powerdns.com/md/changelog/#powerdns-authoritative-server-401 Release Notes
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 Issue Tracking
https://github.com/sischkg/xfer-limit/blob/master/README.md Patch
https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html Mailing ListThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-6172), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.