TI-2016-05295 Aliases CVE-2016-6171 GHSA-935v-fg4c-f9fr

Knot DNS before 2.3.0 allows remote DNS servers to cause a denial of service (memory…

MEDIUM 42CWE-400Published 2017-02-09 · Updated 2024-08-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

Knot DNS before 2.3.0 allows remote DNS servers to cause a denial of service (memory exhaustion and slave server crash) via a large zone transfer for (1) DDNS, (2) AXFR, or (3) IXFR.

Why it matters now

EPSS 0.02799 86th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:knot-dns:knot_dns::::::::	before 2.3.0	Vulnerable	Knot-dns

cpe:2.3:a:knot-dns:knot_dns:*:*:*:*:*:*:*:* Versions before 2.3.0 Vulnerable ·Knot-dns

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2016-6171
2026-10-03 Alias added: GHSA-935v-fg4c-f9fr

References

Patch 1

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

Advisory 3

Other 2

TI-2017-08166 Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol… CVSS 3.1MEDIUM 5.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences