CVE-2019-6467
An error in the nxdomain redirect feature can cause BIND to exit with an INSIST assertion failure in query.c
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
5.9
An error in the nxdomain redirect feature can cause BIND to exit with an INSIST assertion failure in query.c
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.
- Record
CVE-2019-6467- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
EUVDEUVD-2019-16027
5.9
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.
- Record
EUVD-2019-16027- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-92q8-7pjj-mpmp No score
A programming error in the nxdomain-redirect feature can cause an assertion failure in query.c if...
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.
- Record
GHSA-92q8-7pjj-mpmp- Updated
- 2026-11-02
NVD
7.5
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.
- Record
CVE-2019-6467- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-617
- Updated
- 2026-11-02
OSVALPINE-CVE-2019-6467
7.5
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.
- Record
ALPINE-CVE-2019-6467- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVBELL-CVE-2019-6467
7.5
CVE-2019-6467 does not affect BellSoft software
- Record
BELL-CVE-2019-6467- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV
7.5
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.
- Record
CVE-2019-6467- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2019-6467
7.5
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.
- Record
UBUNTU-CVE-2019-6467- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
bindAlpine:v3.10 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.11 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.12 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.13 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.14 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.15 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.16 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.17 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.18 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.19 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
Show 9 moreShow less
| Package | Affected | Fixed |
|---|---|---|
bindAlpine:v3.20 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.21 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.22 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.23 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.24 |
9.12.0 up to 9.14.1-r0 | 9.14.1-r0 |
bindAlpine:v3.6 |
9.12.0 up to 9.11.6_p1-r0 | 9.11.6_p1-r0 |
bindAlpine:v3.7 |
9.12.0 up to 9.11.6_p1-r0 | 9.11.6_p1-r0 |
bindAlpine:v3.8 |
9.12.0 up to 9.12.4_p1-r0 | 9.12.4_p1-r0 |
bindAlpine:v3.9 |
9.12.0 up to 9.12.4_p1-r0 | 9.12.4_p1-r0 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | knqyf263/CVE-2019-6467 | 2019-04-25 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-6467 is a medium vulnerability (CVSS 5.9) in Isc Bind, published April 24, 2019. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 5.56%, the 92nd percentile. Fixed in bind 9.14.1-r0.
References
kb.isc.org/docs/cve-2019-6467
synology.com/security/advisory/Synology_SA_19_20
nvd.nist.gov/vuln/detail/CVE-2019-6467
github.com/advisories/GHSA-92q8-7pjj-mpmp
security.alpinelinux.org/vuln/CVE-2019-6467
docs.bell-sw.com/security/cves/CVE-2019-6467
ubuntu.com/security/CVE-2019-6467
cve.org/CVERecord?id=CVE-2019-6467