CVE-2019-6467

An error in the nxdomain redirect feature can cause BIND to exit with an INSIST assertion failure in query.c

Description

A programming error in the nxdomain-redirect feature can cause an assertion failure in query.c if the alternate namespace used by nxdomain-redirect is a descendant of a zone that is served locally. The most likely scenario where this might occur is if the server, in addition to performing NXDOMAIN redirection for recursive clients, is also serving a local copy of the root zone or using mirroring to provide the root zone, although other configurations are also possible. Versions affected: BIND 9.12.0-> 9.12.4, 9.14.0. Also affects all releases in the 9.13 development branch.

Scores

Weaknesses (CWE)

• CWE-617

European references

• ENISA EUVD · EUVD-2019-16027
• GCVE · GCVE-0-2019-6467

CERT-FR advisories

• CERTFR-2019-AVI-187 — Multiples vulnérabilités dans BIND · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

• cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* ≥ 9.12.0 ≤ 9.12.4
• cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* ≥ 9.13.0 ≤ 9.13.7
• cpe:2.3:a:isc:bind:9.14.0:*:*:*:*:*:*:*

Affected products

References

• https://kb.isc.org/docs/cve-2019-6467
• https://www.synology.com/security/advisory/Synology_SA_19_20

Sources