VIR Vulnerability Intelligence Relay

CVE-2016-6172

medium
Published 2016-09-26 · Modified 2026-05-06
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
6.8
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4 NEW
—
not yet in upstream
VIR risk
6.8

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.

Predictions

Exploit likelihood
77%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact
suse SUSE Affected 3 releases
VersionStatusFixed in
42.1 Affected —
13.2 Affected —
— Affected —
debian Debian Fixed 5 releases
VersionStatusFixed in
trixie Fixed 4.0.1-1
sid Fixed 4.0.1-1
forky Fixed 4.0.1-1
bullseye Fixed 4.0.1-1
bookworm Fixed 4.0.1-1

Application impact
VendorProductVersionsFixed
powerdnsauthoritative_server{"endIncluding":"4.0.0"}

References

CWEs

CWE-400

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.