CVE-2019-25437
📋 TL;DR
CVE-2019-25437 is a buffer overflow vulnerability in Foscam Video Management System version 1.1.6.6 that allows local attackers to crash the application by supplying an excessively long string in the UID field during device addition. This affects organizations using this specific version of Foscam's video management software for surveillance systems.
💻 Affected Systems
- Foscam Video Management System
⚠️ 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 denial of service for the video management system, disrupting surveillance monitoring capabilities until system restart.
Likely Case
Application crash requiring manual restart, temporarily disabling video management functionality.
If Mitigated
No impact if proper network segmentation and access controls prevent local attackers from reaching the vulnerable interface.
🎯 Exploit Status
Exploit requires local access to the system; exploit code is publicly available showing simple buffer overflow triggering.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 1.1.6.6
Vendor Advisory: https://www.foscam.com/
Restart Required: Yes
Instructions:
1. Download latest Foscam VMS version from official website. 2. Backup current configuration. 3. Run installer to upgrade. 4. Restart system and verify functionality.
🔧 Temporary Workarounds
Restrict Local Access
allLimit access to the VMS interface to authorized personnel only using network segmentation and access controls.
Input Validation via Proxy
allImplement a reverse proxy or WAF to validate and limit UID field length before reaching the vulnerable application.
🧯 If You Can't Patch
- Implement strict access controls to limit who can access the device management interface
- Monitor for application crashes and implement automated restart procedures
🔍 How to Verify
Check if Vulnerable:
Check Help > About in Foscam VMS interface to confirm version is 1.1.6.6Check Version:
Check application interface or registry: HKEY_LOCAL_MACHINE\SOFTWARE\Foscam\VMS\VersionVerify Fix Applied:
After upgrade, verify version number is higher than 1.1.6.6 and test device addition with normal UID values📡 Detection & Monitoring
Log Indicators:
- Application crash logs
- Unexpected service termination events
- Failed login attempts with unusually long UID fields
Network Indicators:
- HTTP POST requests to device addition endpoint with abnormally long UID parameter
SIEM Query:
source="foscam_vms" AND (event_type="crash" OR (http_method="POST" AND uri_path="/device/add" AND parameter_length("uid") > 100))