CVE-2019-6467
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.
- Affected products
- Bind, Bind Server
- Isc Bind
- ≤ 9.12.4, 9.13.7, 9.14.0
- Fix
- Available
- CVSS 3.1
- 7.5 HIGH
- EPSS
- 5.5% (92th percentile)
- Weakness
- CWE-617
- NVD status
- Modified
- Published
- 2019-10-09
Fix
Upgrade to the patched release most closely related to your current version of BIND: + BIND 9.12.4-P1 + BIND 9.14.1
Workaround
Exploitation of this defect can be effectively prevented by disabling the nxdomain-redirect feature in the nameserver's configuration.
No indexed exploits for CVE-2019-6467 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2019-6467 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.