CVE-2020-37185
📋 TL;DR
CVE-2020-37185 is a buffer overflow vulnerability in Backup Key Recovery 2.2.5 that allows attackers to crash the application by sending overly long input to the 'Name' field during registration. This affects all users running the vulnerable version of Backup Key Recovery software. The vulnerability enables denial of service attacks that disrupt application availability.
💻 Affected Systems
- Backup Key Recovery
⚠️ 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 application crash leading to service unavailability, potential data loss if crash occurs during backup operations, and possible system instability on the host machine.
Likely Case
Application crash requiring manual restart, temporary disruption of backup services, and potential loss of in-progress backup operations.
If Mitigated
No impact if input validation is properly implemented or if the vulnerable field is not exposed to untrusted users.
🎯 Exploit Status
Exploit requires access to the registration interface. The exploit is simple - paste 1000+ characters into the name field. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://www.nsauditor.com/
Restart Required: No
Instructions:
1. Check vendor website for updated version
2. Download and install updated version
3. Verify fix by testing with long input strings
🔧 Temporary Workarounds
Input Length Restriction
allImplement client-side or server-side validation to restrict name field length to reasonable values (e.g., 100 characters maximum)
Disable Registration Interface
allTemporarily disable or restrict access to the registration functionality if not required
🧯 If You Can't Patch
- Implement network segmentation to isolate Backup Key Recovery systems from untrusted networks
- Deploy web application firewall (WAF) rules to block requests with excessively long name parameters
🔍 How to Verify
Check if Vulnerable:
Attempt to input 1000+ characters into the registration name field and observe if application crashesCheck Version:
Check Help > About in Backup Key Recovery application or examine installed programs list in WindowsVerify Fix Applied:
Test with 1000+ character input after applying controls - application should not crash and should properly handle/reject the input📡 Detection & Monitoring
Log Indicators:
- Application crash logs
- Error messages related to buffer overflow or memory access violations
- Unusually long input strings in application logs
Network Indicators:
- HTTP POST requests with extremely long 'name' parameter values to registration endpoints
SIEM Query:
source="backup_key_recovery.log" AND ("crash" OR "buffer overflow" OR "access violation")