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Amazon Linux AMI : tomcat8 (ALAS-2021-1546)

high Nessus Plugin ID 154897

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Synopsis

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

Description

The version of tomcat8 installed on the remote host is prior to 8.5.72-1.89. It is, therefore, affected by a vulnerability as referenced in the ALAS-2021-1546 advisory.

 A memory leak flaw was found in Apache Tomcat, where an HTTP upgrade connection does not release for WebSocket connections once the WebSocket connection is closed. If a sufficient number of such requests are made, an OutOfMemoryError occurs, leading to a denial of service. The highest threat from this vulnerability is to system availability. (CVE-2021-42340)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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 tomcat8' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2021-1546.html

https://access.redhat.com/security/cve/CVE-2021-42340

Plugin Details

Severity: High

ID: 154897

File Name: ala_ALAS-2021-1546.nasl

Version: 1.4

Type: local

Agent: unix

Published: 11/5/2021

Updated: 12/11/2024

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

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-42340

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:tomcat8-javadoc, p-cpe:/a:amazon:linux:tomcat8-log4j, p-cpe:/a:amazon:linux:tomcat8-servlet-3.1-api, p-cpe:/a:amazon:linux:tomcat8-admin-webapps, p-cpe:/a:amazon:linux:tomcat8, p-cpe:/a:amazon:linux:tomcat8-docs-webapp, p-cpe:/a:amazon:linux:tomcat8-webapps, p-cpe:/a:amazon:linux:tomcat8-el-3.0-api, p-cpe:/a:amazon:linux:tomcat8-jsp-2.3-api, p-cpe:/a:amazon:linux:tomcat8-lib, 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: 10/29/2021

Vulnerability Publication Date: 10/1/2021

Reference Information

CVE: CVE-2021-42340

ALAS: 2021-1546

IAVA: 2021-A-0479-S