ISC BIND Zone Transfer permission assignment

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in ISC BIND up to 9.10.8-P1/9.11.5-P2/9.11.5-S3/9.12.3-P2/9.13.6 (Domain Name Software). This issue affects an unknown functionality of the component Zone Transfer Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-732. Impacted is confidentiality. The summary by CVE is:

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.

The bug was discovered 02/21/2019. The weakness was released 10/09/2019 (Website). It is possible to read the advisory at The identification of this vulnerability is CVE-2019-6465 since 01/16/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/29/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 230 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

Entries connected to this vulnerability are available at 143295, 143294, 143293 and 143292.





CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Privilege escalation
CWE: CWE-732
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍


01/16/2019 🔍
02/21/2019 +36 days 🔍
10/09/2019 +230 days 🔍
10/10/2019 +1 days 🔍
09/29/2020 +355 days 🔍



Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-6465 (🔍)
OSVDB: - ISC BIND Dynamically Loadable Zones information disclosure

See also: 🔍


Created: 10/10/2019 10:58 AM
Updated: 09/29/2020 10:17 PM
Changes: (1) advisory_confirm_url
Complete: 🔍


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