Amazon Linux 2 : unbound (ALAS-2020-1430)

high Nessus Plugin ID 136753


The remote Amazon Linux 2 host is missing a security update.


infinite loop via malformed DNS answers received from upstream servers (CVE-2020-12663)

insufficient control of network message volume leads to DoS (CVE-2020-12662)


Run 'yum update unbound' to update your system.

See Also

Plugin Details

Severity: High

ID: 136753

File Name: al2_ALAS-2020-1430.nasl

Version: 1.3

Type: local

Agent: unix

Published: 5/21/2020

Updated: 3/12/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2020-12663


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: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:unbound, p-cpe:/a:amazon:linux:unbound-debuginfo, p-cpe:/a:amazon:linux:unbound-devel, p-cpe:/a:amazon:linux:unbound-libs, p-cpe:/a:amazon:linux:unbound-python, cpe:/o:amazon:linux:2

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 5/20/2020

Vulnerability Publication Date: 5/19/2020

Reference Information

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

ALAS: 2020-1430