CVE-2024-52594
📋 TL;DR
Gomatrixserverlib, a Go library for Matrix federation, is vulnerable to server-side request forgery (SSRF) that allows attackers to make the server access resources from private networks it can reach. This affects any service using vulnerable versions of gomatrixserverlib. The vulnerability requires specific conditions to be exploitable.
💻 Affected Systems
- matrix-org/gomatrixserverlib
⚠️ 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 sensitive internal services, exfiltrate data from private networks, or pivot to other internal systems.
Likely Case
Limited information disclosure from internal services the server can access, potentially exposing configuration or metadata.
If Mitigated
Minimal impact if network segmentation restricts server access to only necessary resources.
🎯 Exploit Status
Exploitation requires the attacker to control certain URL parameters in federation requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Commit c4f1e01eab0dd435709ad15463ed38a079ad6128
Vendor Advisory: https://github.com/matrix-org/gomatrixserverlib/security/advisories/GHSA-4ff6-858j-r822
Restart Required: Yes
Instructions:
1. Update gomatrixserverlib to include commit c4f1e01eab0dd435709ad15463ed38a079ad6128
2. Rebuild and redeploy any services using the library
3. Restart affected services
🔧 Temporary Workarounds
Network segmentation via firewall
linuxRestrict outbound network access from the server to only necessary endpoints
iptables -A OUTPUT -d 10.0.0.0/8 -j DROP
iptables -A OUTPUT -d 172.16.0.0/12 -j DROP
iptables -A OUTPUT -d 192.168.0.0/16 -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to limit server access to only required external endpoints
- Monitor outbound connections from the server for suspicious patterns
🔍 How to Verify
Check if Vulnerable:
Check if your gomatrixserverlib version includes commit c4f1e01eab0dd435709ad15463ed38a079ad6128Check Version:
git log --oneline -1Verify Fix Applied:
Verify the commit hash in your deployed version matches or exceeds c4f1e01eab0dd435709ad15463ed38a079ad6128📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from server to internal IP ranges
- Requests to unexpected internal endpoints
Network Indicators:
- Outbound connections from server to private IP ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16)
SIEM Query:
source_ip=server_ip AND dest_ip IN (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) AND protocol=HTTP