CVE-2019-6467 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5