Detections
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Amazon Linux AMI : dnsmasq (ALAS-2023-1758)

high Nessus Plugin ID 177071

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Synopsis

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

Description

The version of dnsmasq installed on the remote host is prior to 2.76-16.17. It is, therefore, affected by a vulnerability as referenced in the ALAS-2023-1758 advisory.

 - An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020. (CVE-2023-28450)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update dnsmasq' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2023-1758.html

https://alas.aws.amazon.com/cve/html/CVE-2023-28450.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: High

ID: 177071

File Name: ala_ALAS-2023-1758.nasl

Version: 1.0

Type: local

Agent: unix

Published: 6/9/2023

Updated: 6/9/2023

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2023-28450

CVSS v3

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:dnsmasq, p-cpe:/a:amazon:linux:dnsmasq-debuginfo, p-cpe:/a:amazon:linux:dnsmasq-utils, cpe:/o:amazon:linux

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/5/2023

Vulnerability Publication Date: 3/15/2023

Reference Information

CVE: CVE-2023-28450