CVE-2019-6465 — Zone transfer controls for writable DLZ zones were not effective

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MEDIUM

Zone transfer controls for writable DLZ zones were not effective

Published Oct 9, 2019

5.3

MEDIUM

CVSS 3.1

EPSS 3.73%

Description

Controls for zone transfers may not be properly applied to Dynamically Loadable Zones (DLZs) if the zones are writable Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P2, 9.12.0 -> 9.12.3-P2, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2019-6465.

Affected products

Vendor ISC Product BIND 9 Default
n/a
- Version
  BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P2, 9.12.0 -> 9.12.3-P2, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2019-6465.
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

ISC

BIND 9

n/a

Version	Status	Constraints
BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P2, 9.12.0 -> 9.12.3-P2, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2019-6465.	affected	-

Red Hat Enterprise Linux 7

bind-32:9.11.4-16.P2.el7

Fixed · RHSA-2020:1061
Red Hat Enterprise Linux 8

bind-32:9.11.4-26.P2.el8

Fixed · RHSA-2019:3552
Red Hat Enterprise Linux 8

bind-32:9.11.4-26.P2.el8

Fixed · RHSA-2019:3552
Red Hat Enterprise Linux 5

bind

Out of support scope
Red Hat Enterprise Linux 5

bind97

Out of support scope
Red Hat Enterprise Linux 6

bind

Will not fix

Product	Package	State	Advisory
Red Hat Enterprise Linux 7	bind-32:9.11.4-16.P2.el7	Fixed	RHSA-2020:1061
Red Hat Enterprise Linux 8	bind-32:9.11.4-26.P2.el8	Fixed	RHSA-2019:3552
Red Hat Enterprise Linux 8	bind-32:9.11.4-26.P2.el8	Fixed	RHSA-2019:3552
Red Hat Enterprise Linux 5	bind	Out of support scope	n/a
Red Hat Enterprise Linux 5	bind97	Out of support scope	n/a
Red Hat Enterprise Linux 6	bind	Will not fix	n/a

Remediation

Vendor solution

Upgrade to the patched release most closely related to your current version of BIND:

>= BIND 9.11.5-P4 >= BIND 9.12.3-P4

BIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.

>= BIND 9.11.5-S5

Metrics

3.73% 0.03731

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.03731

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Table of values (15 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	3.73% (0.03731)	89.48th	v5 (v2026.06.15)
Jun 15, 2026	4.58% (0.04577)	90.39th	v5 (v2026.06.15)
Mar 30, 2025	1.01% (0.01009)	75.07th	v4 (v2025.03.14)
Mar 29, 2025	3.36% (0.03362)	78.73th	v4 (v2025.03.14)
Jul 20, 2024	0.07% (0.00074)	32.28th	v3 (v2023.03.01)
Jul 14, 2024	0.07% (0.00074)	32.22th	v3 (v2023.03.01)
Jun 12, 2024	0.07% (0.00069)	29.97th	v3 (v2023.03.01)
Mar 7, 2023	0.07% (0.00069)	27.96th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00885)	24.24th	v2 (v2022.01.01)
Feb 4, 2022	4.50% (0.04499)	74.08th	v2 (v2022.01.01)
Feb 3, 2022	2.74% (0.02742)	63.06th	v5 (v2026.06.15)
Jan 6, 2022	2.74% (0.02742)	62.72th	v1
Sep 1, 2021	0.62% (0.00624)	45.04th	v1
Apr 14, 2021	0.62% (0.00624)	0.00th	v1

Weaknesses (2)

CWE-284

CWE-732

Incorrect Permission Assignment

References (6)

https://access.redhat.com/errata/RHSA-2019:3552
vendor-advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/security/cve/CVE-2019-6465
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1679304
Issue Tracking
https://kb.isc.org/docs/cve-2019-6465
x_refsource_CONFIRMThird Party Advisory
https://nvd.nist.gov/vuln/detail/CVE-2019-6465
https://www.cve.org/CVERecord?id=CVE-2019-6465

Link	Providers	Tags
https://access.redhat.com/errata/RHSA-2019:3552		vendor-advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/security/cve/CVE-2019-6465		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1679304		Issue Tracking
https://kb.isc.org/docs/cve-2019-6465		x_refsource_CONFIRMThird Party Advisory
https://nvd.nist.gov/vuln/detail/CVE-2019-6465
https://www.cve.org/CVERecord?id=CVE-2019-6465