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Amazon Linux AMI : chrony (ALAS-2014-366)

high Nessus Plugin ID 78309

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Synopsis

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

Description

It was reported that the cmdmon protocol implemented in chrony was found to be vulnerable to DDoS attacks using traffic amplification. By default, commands are allowed only from localhost, but it's possible to configure chronyd to allow commands from any address. This could allow a remote attacker to cause a DoS, which could cause excessive resource usage.

Solution

Run 'yum update chrony' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2014-366.html

Plugin Details

Severity: High

ID: 78309

File Name: ala_ALAS-2014-366.nasl

Version: 1.4

Type: local

Agent: unix

Published: 10/12/2014

Updated: 12/4/2019

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

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

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:chrony-debuginfo, p-cpe:/a:amazon:linux:chrony

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

Patch Publication Date: 9/19/2014

Vulnerability Publication Date: 11/15/2019

Reference Information

CVE: CVE-2014-0021

ALAS: 2014-366