cis-tomcat9-v120-10-14

name	cis-tomcat9-v120-10.14
description	Do not allow cross context requests (Automated)
category	cis-tomcat
version	1.2.0
author	cyberstrike-official
tags	["cis","tomcat","linux","java","configuration","hardening","security"]
cis_id	10.14
cis_benchmark	CIS Apache Tomcat 9 Benchmark v1.2.0
tech_stack	["linux","tomcat","java"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

10.14 Do not allow cross context requests (Automated)

Description

Setting crossContext to true allows for an application to call ServletConext.getContext to return a dispatcher for another application.

Rationale

Allowing crossContext creates the possibility for a malicious application to make requests to a restricted application.

Audit Procedure

Ensure the crossContext attribute in all context.xml does not exist or is set to false.

# find . -name context.xml | xargs grep "crossContext"

Remediation

Set the crossContext attribute in all context.xml files to false:

<Context ... crossContext="false" />

Default Value

By default crossContext has a value of false.

References

1. https://tomcat.apache.org/tomcat-9.0-doc/config/context.html

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	2.7 Allowlist Authorized Scripts Use technical controls, such as digital signatures and version control, to ensure that only authorized scripts, such as specific .ps1, .py, etc., files, are allowed to execute. Block unauthorized scripts from executing. Reassess bi-annually, or more frequently.			●
v7	4.7 Limit Access to Script Tools Limit access to scripting tools (such as Microsoft PowerShell and Python) to only administrative or development users with the need to access those capabilities.		●	●

Profile

Level 1