CVE-2025-45583
📋 TL;DR
This vulnerability allows attackers to bypass authentication in the FTP service of Audi UTR 2.0 Universal Traffic Recorder by using any username/password combination. This affects all systems running the vulnerable version of the traffic recorder software, potentially exposing sensitive traffic data.
💻 Affected Systems
- Audi UTR 2.0 Universal Traffic Recorder
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full administrative access to the FTP service, allowing them to download all recorded traffic data, upload malicious files, modify existing recordings, or use the system as a foothold for further network attacks.
Likely Case
Unauthorized access to recorded traffic data, potentially exposing sensitive information about network communications, user activities, or proprietary data being transmitted.
If Mitigated
If proper network segmentation and access controls are in place, the impact is limited to the FTP service itself, though sensitive data could still be exposed.
🎯 Exploit Status
The vulnerability requires only FTP client access and any credentials. No special tools or knowledge needed beyond basic FTP usage.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Check with Audi or the device manufacturer for security updates.
🔧 Temporary Workarounds
Disable FTP Service
allCompletely disable the FTP service if not required for operations
Specific commands depend on device configuration interface
Implement Network Access Controls
allRestrict FTP access to specific trusted IP addresses only
Use firewall rules to block FTP (port 21) from untrusted networks
🧯 If You Can't Patch
- Isolate the device on a separate VLAN with strict access controls
- Monitor FTP authentication logs for suspicious activity and failed/successful login attempts
🔍 How to Verify
Check if Vulnerable:
Attempt to authenticate to the FTP service using any random username/password combination. If authentication succeeds, the system is vulnerable.Check Version:
Check device firmware/software version through device management interfaceVerify Fix Applied:
After applying workarounds, test FTP authentication with invalid credentials - it should fail.📡 Detection & Monitoring
Log Indicators:
- Successful FTP logins with unusual usernames
- Multiple FTP authentication attempts from single source
- FTP access outside normal business hours
Network Indicators:
- FTP traffic from unexpected source IPs
- Unusual data transfer volumes via FTP
SIEM Query:
source="ftp.log" AND (event="login successful" OR event="authentication success") | stats count by src_ip, user