CVE-2024-46947
📋 TL;DR
This CVE describes a Server-Side Request Forgery (SSRF) vulnerability in Northern.tech Mender that allows attackers to make unauthorized requests from the server to internal or external systems. It affects Mender Enterprise Server deployments where attackers can potentially access internal services or exfiltrate data. Organizations running vulnerable Mender versions for IoT device management are at risk.
💻 Affected Systems
- Northern.tech Mender Enterprise Server
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access internal services, exfiltrate sensitive data, or pivot to other systems within the network, potentially leading to full network compromise.
Likely Case
Unauthorized access to internal APIs or services, information disclosure from internal systems, or limited data exfiltration.
If Mitigated
Limited impact with proper network segmentation and egress filtering, potentially only error messages or minimal information disclosure.
🎯 Exploit Status
SSRF vulnerabilities typically require some level of access or interaction with the vulnerable service.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Mender 3.6.6 or 3.7.7
Vendor Advisory: https://mender.io/blog/cve-2024-46947-cve-2024-47190-ssrf-issues-in-mender-enterprise-server
Restart Required: Yes
Instructions:
1. Backup your Mender configuration and data. 2. Update to Mender 3.6.6 if on 3.6.x series. 3. Update to Mender 3.7.7 if on 3.7.x series. 4. Restart Mender services. 5. Verify the update was successful.
🔧 Temporary Workarounds
Network Segmentation
linuxRestrict Mender server's outbound network access to only necessary services
iptables -A OUTPUT -p tcp --dport 443 -j ACCEPT
iptables -A OUTPUT -j DROP
Input Validation
allImplement additional input validation for URL parameters in Mender configuration
🧯 If You Can't Patch
- Implement strict network egress filtering to limit Mender server's outbound connections
- Deploy web application firewall rules to detect and block SSRF patterns
🔍 How to Verify
Check if Vulnerable:
Check Mender version: mender version | grep -E '3\.6\.([0-5]|$)|3\.7\.([0-6]|$)'Check Version:
mender versionVerify Fix Applied:
Verify version is 3.6.6 or higher for 3.6.x series, or 3.7.7 or higher for 3.7.x series📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from Mender server
- Requests to internal IP addresses or localhost
- Error responses from internal services
Network Indicators:
- Unexpected HTTP traffic from Mender server to internal networks
- Port scanning activity originating from Mender server
SIEM Query:
source="mender.log" AND (url="http://127.*" OR url="http://192.168.*" OR url="http://10.*")