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CVE-2019-6465· NVD / CVE Program· CNA isc

Zone transfer controls for writable DLZ zones were not effective

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.

MediumCVSS 5.3 · v3.1—No exploit Fix available
Published
Oct 9, 2019
Updated
Jun 16, 2026
EPSS
3.7% · 89th percentile
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Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.7%

CNA vs NVD score

NVD
5.3
CNA · isc
5.3
agree

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
iscbind
redhatenterprise linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • isc bind9.13.0 and later · up to 9.13.6 inclusive
  • isc bind9.11.0 and later · up to 9.11.4 inclusive
  • isc bind9.12.0 and later · up to 9.12.2 inclusive
  • isc bind9.9.0 and later · up to 9.10.7 inclusive
  • isc bind9.10.8
  • isc bind9.11.5
  • isc bind9.12.3
  • isc bind9.9.3
  • redhat enterprise linux8.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (isc). Independent of NVD's CPE analysis and usually ahead of it.

  • ISC BIND 9

    • 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 affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.10bindfrom 9.9.0 · before 9.12.3_p4-r09.12.3_p4-r0
Alpine:v3.6bindfrom 9.9.0 · before 9.11.5_p4-r09.11.5_p4-r0
Debian:12bind9before 1:9.11.5.P4+dfsg-11:9.11.5.P4+dfsg-1
Debian:8bind9before 1:9.9.5.dfsg-9+deb8u171:9.9.5.dfsg-9+deb8u17
Debian:9bind9before 1:9.10.3.dfsg.P4-12.3+deb9u51:9.10.3.dfsg.P4-12.3+deb9u5
openSUSE:Leap 15.0bindbefore 9.11.2-lp151.11.3.19.11.2-lp151.11.3.1
openSUSE:Tumbleweedbindbefore 9.16.20-1.49.16.20-1.4
Red Hat:enterprise_linux:7::clientbindbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-chrootbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-debuginfobefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-develbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-export-develbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-export-libsbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-libsbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-libs-litebefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-licensebefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-lite-develbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-pkcs11before 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-pkcs11-develbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-pkcs11-libsbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-pkcs11-utilsbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-sdbbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-sdb-chrootbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7
Red Hat:enterprise_linux:7::clientbind-utilsbefore 32:9.11.4-16.P2.el732:9.11.4-16.P2.el7

+31

Same product

isc: all records

Other highest-scoring records for the same primary product.

  • CVE-2015-5477named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (REQUIRE assertion fa
    58Plan
  • CVE-2016-2776buffer.c in named in ISC BIND 9 before 9.9.9-P3, 9.10.x before 9.10.4-P3, and 9.11.x before 9.11.0rc3 does not properly construct responses,
    57Plan
  • CVE-2016-1286named in ISC BIND 9.x before 9.9.8-P4 and 9.10.x before 9.10.3-P4 allows remote attackers to cause a denial of service (assertion failure an
    53Plan
  • CVE-2020-8625A vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack
    51Plan
  • CVE-2020-8617A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c
    51Plan
  • CVE-2001-0010Buffer overflow in transaction signature (TSIG) handling code in BIND 8 allows remote attackers to gain root privileges.
    49Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:bind9.12.3_p4-r0 · Alpine:v3.10Package registry (OSV)
debian:bind91:9.11.5.P4+dfsg-1 · Debian:12Package registry (OSV)
opensuse:bind9.11.2-lp151.11.3.1 · openSUSE:Leap 15.0Package registry (OSV)
red hat:bind32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-chroot32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-debuginfo32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-debugsource32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-devel32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-export-libs-debuginfo32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-libs32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-libs-debuginfo32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-libs-lite32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-libs-lite-debuginfo32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-license32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:bind-lite-devel32:9.11.4-26.P2.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
suse:bind9.11.2-12.11.2 · SUSE:Linux Enterprise Module for Basesystem 15Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-732 · Incorrect Permission Assignment for Critical Resource

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records