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CVE-2019-6467

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

5.9 MediumPublic exploitFix available

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

5.56%Up 2.8 points since Apr 14, 2021
90%50%10%1%

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 MediumCVSS: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 MediumCVSS: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 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV: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 HighCVSS: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 HighCVSS: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 HighCVSS: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 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0
5.9 MediumCVSS: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

Affected packages
PackageAffectedFixed
bind
Alpine:v3.10
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.11
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.12
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.13
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.14
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.15
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.16
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.17
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.18
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.19
9.12.0 up to 9.14.1-r0
9.14.1-r0
Show 9 moreShow less
Affected packages
PackageAffectedFixed
bind
Alpine:v3.20
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.21
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.22
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.23
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.24
9.12.0 up to 9.14.1-r0
9.14.1-r0
bind
Alpine:v3.6
9.12.0 up to 9.11.6_p1-r0
9.11.6_p1-r0
bind
Alpine:v3.7
9.12.0 up to 9.11.6_p1-r0
9.11.6_p1-r0
bind
Alpine:v3.8
9.12.0 up to 9.12.4_p1-r0
9.12.4_p1-r0
bind
Alpine: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.

Public exploits
SourceLinkDate
PoC in GitHubknqyf263/CVE-2019-64672019-04-25

History

History
RecordedChangedSources
affected
aliasesEUVD
first indexedCVE 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

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