FreeBSD : unbound -- mutliple vulnerabilities (a2cb7c31-9c79-11ea-a9c2-d05099c0ae8c)

high Nessus Plugin ID 136852


New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote FreeBSD host is missing a security-related update.


NLNetLabs reports :

This release fixes CVE-2020-12662 and CVE-2020-12663.

Bug Fixes :

- CVE-2020-12662 Unbound can be tricked into amplifying an incoming query into a large number of queries directed to a target.

- CVE-2020-12663 Malformed answers from upstream name servers can be used to make Unbound unresponsive.


Update the affected package.

See Also

Plugin Details

Severity: High

ID: 136852

File Name: freebsd_pkg_a2cb7c319c7911eaa9c2d05099c0ae8c.nasl

Version: 1.3

Type: local

Published: 5/26/2020

Updated: 7/10/2020

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Medium

Score: 5.1


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:unbound, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 5/22/2020

Vulnerability Publication Date: 5/19/2020

Reference Information

CVE: CVE-2020-12662, CVE-2020-12663

FreeBSD: SA-20:19.unbound