CVE-2024-45166
📋 TL;DR
UCI IDOL2 through version 2.12 contains multiple memory corruption vulnerabilities due to improper input validation, deserialization, and buffer restrictions. Attackers can cause denial-of-service or potentially execute arbitrary code remotely by triggering an access violation and EIP overwrite after five login attempts. All users running IDOL2 up to version 2.12 are affected.
💻 Affected Systems
- UCI IDOL2
- uciIDOL
- IDOL2
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with SYSTEM/root privileges leading to complete system compromise.
Likely Case
Denial-of-service causing application crashes and service disruption.
If Mitigated
Limited DoS impact with proper network segmentation and monitoring.
🎯 Exploit Status
Exploitation requires only five login attempts to trigger memory corruption.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2024-050.txt
Restart Required: Yes
Instructions:
1. Check vendor website for updates. 2. Download and install patched version. 3. Restart IDOL2 service. 4. Verify successful update.
🔧 Temporary Workarounds
Network Access Restriction
allLimit access to IDOL2 service to trusted IP addresses only.
# Windows Firewall: New-NetFirewallRule -DisplayName "Block IDOL2" -Direction Inbound -Protocol TCP -LocalPort <IDOL2_PORT> -RemoteAddress <TRUSTED_IPS> -Action Allow
# Linux iptables: iptables -A INPUT -p tcp --dport <IDOL2_PORT> -s <TRUSTED_IPS> -j ACCEPT
Rate Limiting
allImplement rate limiting on login attempts to prevent triggering the vulnerability.
# Using fail2ban: fail2ban-client set <JAIL_NAME> addlogpath /var/log/idol2.log
# Web server rate limiting: limit_req_zone $binary_remote_addr zone=idol2:10m rate=1r/s;
🧯 If You Can't Patch
- Isolate IDOL2 systems in separate network segments with strict firewall rules.
- Implement application-layer monitoring for abnormal login patterns and memory access violations.
🔍 How to Verify
Check if Vulnerable:
Check IDOL2 version number in application interface or configuration files. If version is 2.12 or earlier, system is vulnerable.Check Version:
# Windows: Check program version in Control Panel or registry. # Linux: Check version in /usr/share/idol2/ or application logs.Verify Fix Applied:
Verify version number is higher than 2.12 and test login functionality with monitoring for crashes.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts (5+) within short timeframe
- Application crash logs with memory access violations
- EIP register overwrite errors in debug logs
Network Indicators:
- Rapid login attempts to IDOL2 service
- Abnormal traffic patterns to IDOL2 port
SIEM Query:
source="idol2.log" AND ("access violation" OR "EIP" OR "login failed" count>5 within 60s)