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Amazon Linux 2 : squid (ALAS-2024-2433)

medium Nessus Plugin ID 190023

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Synopsis

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

Description

The version of squid installed on the remote host is prior to 3.5.20-17. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2024-2433 advisory.

 - Squid is a caching proxy for the Web. Due to an expired pointer reference bug, Squid prior to version 6.6 is vulnerable to a Denial of Service attack against Cache Manager error responses. This problem allows a trusted client to perform Denial of Service when generating error pages for Client Manager reports. Squid older than 5.0.5 have not been tested and should be assumed to be vulnerable. All Squid-5.x up to and including 5.9 are vulnerable. All Squid-6.x up to and including 6.5 are vulnerable. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. As a workaround, prevent access to Cache Manager using Squid's main access control: `http_access deny manager`. (CVE-2024-23638)

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 squid' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2024-2433.html

https://alas.aws.amazon.com/cve/html/CVE-2024-23638.html

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

Plugin Details

Severity: Medium

ID: 190023

File Name: al2_ALAS-2024-2433.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2/6/2024

Updated: 2/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2024-23638

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:squid-sysvinit, p-cpe:/a:amazon:linux:squid-migration-script, p-cpe:/a:amazon:linux:squid-debuginfo, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:squid

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/1/2024

Vulnerability Publication Date: 1/24/2024

Reference Information

CVE: CVE-2024-23638