Detections
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Amazon Linux 2 : tomcat (ALASTOMCAT9-2023-006)

high Nessus Plugin ID 182057

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Synopsis

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

Description

The version of tomcat installed on the remote host is prior to 9.0.54-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2TOMCAT9-2023-006 advisory.

 - The fix for bug 63362 present in Apache Tomcat 10.1.0-M1 to 10.1.0-M5, 10.0.0-M1 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a memory leak. The object introduced to collect metrics for HTTP upgrade connections was not released for WebSocket connections once the connection was closed. This created a memory leak that, over time, could lead to a denial of service via an OutOfMemoryError.
 (CVE-2021-42340)

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 tomcat' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALASTOMCAT9-2023-006.html

https://alas.aws.amazon.com/cve/html/CVE-2021-42340.html

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

Plugin Details

Severity: High

ID: 182057

File Name: al2_ALASTOMCAT9-2023-006.nasl

Version: 1.1

Type: local

Agent: unix

Published: 9/27/2023

Updated: 10/2/2023

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

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:tomcat, p-cpe:/a:amazon:linux:tomcat-admin-webapps, p-cpe:/a:amazon:linux:tomcat-docs-webapp, p-cpe:/a:amazon:linux:tomcat-el-3.0-api, p-cpe:/a:amazon:linux:tomcat-jsp-2.3-api, p-cpe:/a:amazon:linux:tomcat-jsvc, p-cpe:/a:amazon:linux:tomcat-lib, p-cpe:/a:amazon:linux:tomcat-servlet-4.0-api, p-cpe:/a:amazon:linux:tomcat-webapps, cpe:/o:amazon:linux:2

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/21/2023

Vulnerability Publication Date: 10/1/2021

Reference Information

CVE: CVE-2021-42340

IAVA: 2021-A-0479-S