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Amazon Linux AMI : tomcat7 (ALAS-2021-1472)

medium Nessus Plugin ID 145002

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Synopsis

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

Description

The version of tomcat7 installed on the remote host is prior to 7.0.107-1.39. It is, therefore, affected by a vulnerability as referenced in the ALAS-2021-1472 advisory.

 - In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely. (CVE-2020-1935)

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 tomcat7' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2021-1472.html

https://access.redhat.com/security/cve/CVE-2020-1935

Plugin Details

Severity: Medium

ID: 145002

File Name: ala_ALAS-2021-1472.nasl

Version: 1.2

Type: local

Agent: unix

Published: 1/14/2021

Updated: 1/14/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 3.3

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2020-1935

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:tomcat7-admin-webapps, p-cpe:/a:amazon:linux:tomcat7-javadoc, p-cpe:/a:amazon:linux:tomcat7-docs-webapp, p-cpe:/a:amazon:linux:tomcat7-jsp-2.2-api, p-cpe:/a:amazon:linux:tomcat7-servlet-3.0-api, p-cpe:/a:amazon:linux:tomcat7, p-cpe:/a:amazon:linux:tomcat7-log4j, p-cpe:/a:amazon:linux:tomcat7-lib, p-cpe:/a:amazon:linux:tomcat7-webapps, p-cpe:/a:amazon:linux:tomcat7-el-2.2-api, 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: 1/12/2021

Vulnerability Publication Date: 2/24/2020

Reference Information

CVE: CVE-2020-1935

ALAS: 2021-1472