CVE-2024-3046
📋 TL;DR
This vulnerability in Eclipse Kura's LogServlet allows unauthenticated attackers to retrieve device logs via specially crafted requests. The downloaded logs may contain session IDs that could enable privilege escalation attacks. This affects Eclipse Kura versions 5.0.0 through 5.4.1.
💻 Affected Systems
- Eclipse Kura
📦 What is this software?
Kura by Eclipse
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative access to the Kura system by extracting valid session IDs from logs, leading to complete system compromise and potential lateral movement.
Likely Case
Unauthenticated attackers access sensitive log data containing system information, configuration details, and potentially session tokens.
If Mitigated
Log exposure limited to non-sensitive information with proper access controls and monitoring in place.
🎯 Exploit Status
Exploitation requires crafting specific HTTP requests to the LogServlet endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Eclipse Kura 5.4.2 or later
Vendor Advisory: https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/188
Restart Required: Yes
Instructions:
1. Download Eclipse Kura 5.4.2 or later from official repository. 2. Backup current configuration. 3. Stop Kura service. 4. Install updated version. 5. Restart Kura service.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to Kura web interface using firewall rules
iptables -A INPUT -p tcp --dport 8080 -s trusted_ip_range -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP
Authentication Enforcement
allEnsure all endpoints require authentication via web server configuration
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Kura instances from untrusted networks
- Enable comprehensive logging and monitoring for unauthorized access attempts to LogServlet endpoints
🔍 How to Verify
Check if Vulnerable:
Check Kura version via web interface or command line: dpkg -l | grep kuraCheck Version:
dpkg -l | grep kura-web2 || rpm -qa | grep kuraVerify Fix Applied:
Verify installed version is 5.4.2 or later and test that unauthenticated requests to LogServlet endpoints are rejected📡 Detection & Monitoring
Log Indicators:
- Unauthenticated access to /log endpoints
- Multiple failed authentication attempts followed by successful log access
Network Indicators:
- HTTP GET requests to /log/* endpoints from unauthenticated sources
- Unusual volume of log download requests
SIEM Query:
source="kura" AND (url_path="/log" OR url_path LIKE "/log/%") AND http_status=200 AND auth_status="unauthenticated"