CVE-2023-28395
📋 TL;DR
CVE-2023-28395 is a session token vulnerability in Osprey Pump Controller version 1.01 that allows attackers to predict session IDs and bypass authentication. This affects industrial control systems using this specific pump controller software. Attackers could gain unauthorized access to control pump operations.
💻 Affected Systems
- Osprey Pump Controller
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing unauthorized control of industrial pumps, potential physical damage to equipment, safety hazards, and disruption of critical water/wastewater operations.
Likely Case
Unauthorized access to pump control systems allowing monitoring of operations, modification of settings, and potential disruption of normal pumping functions.
If Mitigated
Limited impact with proper network segmentation, monitoring, and access controls preventing exploitation attempts from reaching vulnerable systems.
🎯 Exploit Status
Exploitation requires network access to the controller but session prediction algorithms are typically straightforward to implement once understood.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 1.02 or later
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-23-082-06
Restart Required: Yes
Instructions:
1. Contact Osprey vendor for updated firmware. 2. Backup current configuration. 3. Apply firmware update following vendor instructions. 4. Restart controller. 5. Verify functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate pump controller from untrusted networks and implement strict firewall rules.
Access Control Lists
allImplement strict IP-based access controls to limit connections to authorized management stations only.
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable controllers in separate VLANs with strict firewall rules
- Deploy intrusion detection systems monitoring for unusual authentication patterns or session hijacking attempts
🔍 How to Verify
Check if Vulnerable:
Check controller firmware version via web interface or serial console. If version is 1.01, system is vulnerable.Check Version:
Check via web interface at /status or serial console command 'version'Verify Fix Applied:
Verify firmware version is 1.02 or later and test session token generation shows proper randomness.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful login from different IP
- Session IDs with predictable patterns
- Unauthorized configuration changes
Network Indicators:
- Unusual authentication traffic patterns
- Connections from unexpected IP addresses to controller ports
SIEM Query:
source="osprey-controller" AND (event_type="auth" AND result="success" AND src_ip NOT IN allowed_ips)