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Amazon Linux AMI : tomcat8 (ALAS-2021-1473)

high Nessus Plugin ID 145010

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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 8.5.60-1.86. It is, therefore, affected by a vulnerability as referenced in the ALAS-2021-1473 advisory.

 - While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests. (CVE-2020-17527)

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-2021-1473.html

https://access.redhat.com/security/cve/CVE-2020-17527

Plugin Details

Severity: High

ID: 145010

File Name: ala_ALAS-2021-1473.nasl

Version: 1.3

Type: local

Agent: unix

Published: 1/14/2021

Updated: 12/7/2022

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-17527

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:H/I:N/A:N

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/12/2021

Vulnerability Publication Date: 12/3/2020

Reference Information

CVE: CVE-2020-17527

ALAS: 2021-1473