CVE-2020-12662: High severity unbound vulnerability

Published May 19, 2020
·
Updated

Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records.

Affected Software

16 affected componentsFixes available
redhat/unbound<1.10.1
1.10.1
ubuntu/unbound<1.6.7-1ubuntu2.3
1.6.7-1ubuntu2.3
ubuntu/unbound<1.9.0-2ubuntu1.1
1.9.0-2ubuntu1.1
ubuntu/unbound<1.9.4-2ubuntu1.1
1.9.4-2ubuntu1.1
ubuntu/unbound<1.10.1-1
1.10.1-1
debian/unbound
1.13.1-1+deb11u21.17.1-2+deb12u21.20.0-1
nlnetlabs Unbound<1.10.1
Debian Debian Linux=9.0
Debian Debian Linux=10.0
openSUSE Leap=15.1
openSUSE Leap=15.2
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=19.10
Canonical Ubuntu Linux=20.04
Fedoraproject Fedora=31
Fedoraproject Fedora=32

Event History

May 19, 2020
CVE Published
via Ubuntu·12:00 AM
CVE Published
via MITRE·01:50 PM
Data Sourced
via MITRE·01:50 PM
Description
Jan 11, 2024
Data Sourced
via Launchpad·11:38 PM
Description

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the CVE ID of this vulnerability?

The CVE ID of this vulnerability is CVE-2020-12662.

2

What is the severity level of CVE-2020-12662?

The severity level of CVE-2020-12662 is high.

3

What is the affected software for CVE-2020-12662?

The affected software for CVE-2020-12662 includes Unbound versions 1.6.7-1ubuntu2.3, 1.9.0-2ubuntu1.1, 1.10.1-1, 1.9.4-2ubuntu1.1, and 1.10.1.

4

What is the remedy for CVE-2020-12662?

The remedy for CVE-2020-12662 is to update Unbound to version 1.10.1 or apply the specific versions mentioned for each affected software.

5

Where can I find more information about CVE-2020-12662?

More information about CVE-2020-12662 can be found at the following references: [link1](http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html), [link2](http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html), and [link3](http://www.nxnsattack.com).

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