Author: TheCyberGeek

Initial Enumeration

nmap

# Nmap 7.93 scan initiated Sun Apr 30 06:01:00 2023 as: nmap -sC -sV -oN nmap/monitorstwo 10.129.75.142
Nmap scan report for 10.129.75.142
Host is up (0.26s latency).
Scanned at 2023-04-30 06:01:01 IST for 19s
Not shown: 998 closed tcp ports (reset)
PORT   STATE SERVICE VERSION
22/tcp open  ssh     OpenSSH 8.2p1 Ubuntu 4ubuntu0.5 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   3072 48add5b83a9fbcbef7e8201ef6bfdeae (RSA)
| ssh-rsa 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
|   256 b7896c0b20ed49b2c1867c2992741c1f (ECDSA)
| ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBH2y17GUe6keBxOcBGNkWsliFwTRwUtQB3NXEhTAFLziGDfCgBV7B9Hp6GQMPGQXqMk7nnveA8vUz0D7ug5n04A=
|   256 18cd9d08a621a8b8b6f79f8d405154fb (ED25519)
|_ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKfXa+OM5/utlol5mJajysEsV4zb/L0BJ1lKxMPadPvR
80/tcp open  http    nginx 1.18.0 (Ubuntu)
|_http-favicon: Unknown favicon MD5: 4F12CCCD3C42A4A478F067337FE92794
|_http-title: Login to Cacti
|_http-server-header: nginx/1.18.0 (Ubuntu)
| http-methods: 
|_  Supported Methods: GET HEAD POST OPTIONS
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

Read data files from: /usr/bin/../share/nmap
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Sun Apr 30 06:01:20 2023 -- 1 IP address (1 host up) scanned in 20.06 seconds

Web

Checking the exploit for the version we find

https://www.rapid7.com/db/modules/exploit/linux/http/cacti_unauthenticated_cmd_injection/

So using the payload as

we can get a shell (Had to bruteforce the host_id and local_data_id)

Checking in DB we get

Cracking the password we get

Privilege Escalation

sshpass -p 'funkymonkey' ssh marcus@10.129.76.172

Checking the mail of marcus we see

Getting the mount info for the container (From Container Process)

Get the hostname of the mount

we will need root on the container we can get that with capsh

Confirm the Hostname in docker

Modifying the file to be bash with -s to have it sticky permission

and we are rooted