CVE-2020-8619

In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk ("*") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable.

What this means for your business

It affects Isc Bind. It matters if your company, or a supplier that handles your data, runs it.
An attacker can use it remotely, over a network, with an administrator login, and without anyone at your company clicking anything.

What to do

1Check whether your company or your suppliers run Isc Bind, and which version. The affected versions are listed further down this page.
2If you do, apply the vendor's fix. A patch or vendor advisory has been published.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

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Scoring

CVSS: 4.9 (v3.1)
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-404
Assigned by: security-officer@isc.org

Dates

Published: 2020-06-17
Last modified: 2026-09-01
Sources: NVD

Affected products

Isc Bind9.11.14 - 9.11.19, 9.11.14-s1 - 9.11.19-s1, 9.14.9 - 9.14.12, 9.16.0 - 9.16.3
Fedoraproject Fedora31, 32
Opensuse Leap15.1, 15.2
Debian Debian Linux10.0
Canonical Ubuntu Linux20.04
Netapp Steelstore Cloud Integrated Storageall versions

As listed in the NVD configuration data. Not a statement about your estate.