CVE-2023-1834
📋 TL;DR
Rockwell Automation Kinetix 5500 drives manufactured between May 2022 and January 2023 with firmware v7.13 have telnet and FTP ports open by default, allowing unauthorized network access. This affects industrial control systems using these specific drives, potentially exposing them to remote attackers.
💻 Affected Systems
- Rockwell Automation Kinetix 5500 drives
📦 What is this software?
Kinetix 5500 Firmware by Rockwellautomation
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full control of industrial drives, potentially disrupting manufacturing processes, causing equipment damage, or manipulating production parameters.
Likely Case
Unauthorized access to drive configuration and operational data, potential firmware modification, or denial of service to connected machinery.
If Mitigated
Limited exposure if drives are isolated in protected networks with proper segmentation and access controls.
🎯 Exploit Status
Exploitation requires only network access to telnet/FTP ports - no authentication needed. Attackers can connect directly if ports are accessible.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware version 7.14 or later
Vendor Advisory: https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1139441
Restart Required: Yes
Instructions:
1. Download firmware v7.14+ from Rockwell Automation website. 2. Backup current configuration. 3. Update firmware using Studio 5000 Logix Designer. 4. Verify ports are closed after update. 5. Restart drive.
🔧 Temporary Workarounds
Network Access Control
allBlock telnet (port 23) and FTP (port 21) traffic at network perimeter and internal segmentation points
Firewall Rules
allImplement strict firewall rules to only allow necessary traffic to Kinetix drives from authorized sources
🧯 If You Can't Patch
- Isolate affected drives in separate VLAN with strict access controls
- Implement network monitoring for telnet/FTP traffic to these devices
🔍 How to Verify
Check if Vulnerable:
Check manufacturing date on drive label (May 2022-Jan 2023) and verify firmware version is 7.13 via Studio 5000 or drive displayCheck Version:
Use Studio 5000 Logix Designer to read drive firmware versionVerify Fix Applied:
After updating to v7.14+, verify telnet and FTP ports are closed using port scanner or network monitoring📡 Detection & Monitoring
Log Indicators:
- Unexpected telnet/FTP connection attempts to drive IPs
- Failed authentication attempts if credentials are set
Network Indicators:
- Telnet (port 23) or FTP (port 21) traffic to Kinetix 5500 drives
- Unusual traffic patterns to industrial network segments
SIEM Query:
source_ip IN (industrial_network_range) AND (destination_port:23 OR destination_port:21)