CVE-2025-8696
📋 TL;DR
CVE-2025-8696 is a denial-of-service vulnerability in Stork server's UI where unauthenticated attackers can send large data payloads to exhaust system memory and disk resources. This affects Stork versions 1.0.0 through 2.3.0. Organizations running vulnerable Stork servers with internet-accessible interfaces are at risk.
💻 Affected Systems
- ISC Stork
⚠️ 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
Complete system resource exhaustion leading to server crash, service disruption, and potential data corruption from disk space depletion.
Likely Case
Degraded performance or temporary service unavailability due to memory/disk pressure, requiring manual intervention to restore service.
If Mitigated
Minimal impact with proper network segmentation and resource monitoring in place.
🎯 Exploit Status
Simple resource exhaustion attack requiring no authentication or special tools.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.3.1
Vendor Advisory: https://kb.isc.org/docs/cve-2025-8696
Restart Required: Yes
Instructions:
1. Download Stork version 2.3.1 or later from ISC. 2. Stop the Stork service. 3. Install the updated version. 4. Restart the Stork service. 5. Verify the service is running correctly.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to Stork UI to trusted IP addresses only.
iptables -A INPUT -p tcp --dport 8080 -s TRUSTED_IP -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP
Resource Limits
linuxImplement system resource limits to prevent complete exhaustion.
ulimit -v 1048576
systemctl set-property stork.service MemoryLimit=1G
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit Stork UI access to internal trusted networks only.
- Deploy rate limiting or web application firewall (WAF) rules to block large payloads to the Stork UI endpoint.
🔍 How to Verify
Check if Vulnerable:
Check Stork version with 'stork-server --version' or examine package version. If version is between 1.0.0 and 2.3.0 inclusive, system is vulnerable.Check Version:
stork-server --versionVerify Fix Applied:
After patching, verify version is 2.3.1 or later and test by attempting to send large payloads to the UI (monitor resource usage).📡 Detection & Monitoring
Log Indicators:
- Unusually large HTTP requests to Stork UI endpoints
- System log messages about memory/disk exhaustion
- Stork service restart/crash logs
Network Indicators:
- Large volume of data sent to Stork UI port (default 8080)
- Multiple connection attempts from single source to UI
SIEM Query:
source="stork.log" AND ("memory" OR "disk" OR "resource") AND ("error" OR "warning" OR "exhausted")