Detections
Analytics

Amazon Linux AMI : kernel (ALAS-2023-1776)

medium Nessus Plugin ID 177924

Language:

Synopsis

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

Description

The version of kernel installed on the remote host is prior to 4.14.318-167.530. It is, therefore, affected by a vulnerability as referenced in the ALAS-2023-1776 advisory.

 - A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel's IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%. (CVE-2023-1206)

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 kernel' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2023-1776.html

https://alas.aws.amazon.com/cve/html/CVE-2023-1206.html

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

Plugin Details

Severity: Medium

ID: 177924

File Name: ala_ALAS-2023-1776.nasl

Version: 1.1

Type: local

Agent: unix

Published: 7/4/2023

Updated: 7/11/2023

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: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2023-1206

CVSS v3

Risk Factor: Medium

Base Score: 5.7

Temporal Score: 5

Vector: CVSS:3.0/AV:A/AC:L/PR:L/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:perf, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-headers, p-cpe:/a:amazon:linux:kernel-debuginfo-common-i686, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, 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: 6/27/2023

Vulnerability Publication Date: 6/28/2023

Reference Information

CVE: CVE-2023-1206