CVE-2019-6476

An error in QNAME minimization code can cause BIND to exit with an assertion failure

At a glance

Severity: MEDIUM 5.9
EPSS: EPSS 2.91 % · percentile 87 (2026-10-27)
State: PUBLISHED
Published: 2019-10-17
Updated: 2024-09-16
Assigner: isc
NVD status: Modified

Description

A defect in code added to support QNAME minimization can cause named to exit with an assertion failure if a forwarder returns a referral rather than resolving the query. This affects BIND versions 9.14.0 up to 9.14.6, and 9.15.0 up to 9.15.4.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	isc
CVSS 3.1	MEDIUM 5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · security-officer@isc.org (Secondary)
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)
CVSS 2.0	MEDIUM 5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-617

European references

ENISA EUVD · EUVD-2019-16036
GCVE · GCVE-0-2019-6476

CERT-FR advisories

CERTFR-2019-AVI-516 — Multiples vulnérabilités dans BIND · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* ≥ 9.14.0 ≤ 9.14.6
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* ≥ 9.15.0 ≤ 9.15.4

Affected products

Product	Versions
ISC · BIND 9	affected 9.14.0 up to 9.14.6 ; affected 9.15.0 up to 9.15.4

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD