CVE-2020-36949
📋 TL;DR
CVE-2020-36949 is a denial of service vulnerability in TapinRadio 2.13.7 where attackers can crash the application by pasting large buffers (20,000+ characters) into proxy settings fields. This affects all users running the vulnerable version of TapinRadio, requiring reinstallation after exploitation. The vulnerability stems from insufficient input validation in the proxy configuration interface.
💻 Affected Systems
- TapinRadio
📦 What is this software?
Tapinradio by Raimersoft
⚠️ Risk & Real-World Impact
Worst Case
Complete application crash requiring reinstallation, disrupting radio streaming functionality and potentially causing data loss of user settings.
Likely Case
Application becomes unresponsive and crashes, requiring manual restart or reinstallation to restore functionality.
If Mitigated
No impact if input validation is implemented or proxy settings are not exposed to untrusted users.
🎯 Exploit Status
Exploit requires GUI access to paste malicious input into proxy fields. Proof of concept available on Exploit-DB.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor for updates beyond 2.13.7
Vendor Advisory: http://www.raimersoft.com/
Restart Required: Yes
Instructions:
1. Visit http://www.raimersoft.com/ 2. Download latest TapinRadio version 3. Install update 4. Restart application
🔧 Temporary Workarounds
Restrict proxy settings access
windowsPrevent users from accessing proxy configuration dialog through application restrictions or user training.
Input validation via external tools
windowsUse application control solutions to monitor and block excessive input in TapinRadio fields.
🧯 If You Can't Patch
- Isolate TapinRadio to trusted users only and restrict physical/remote GUI access
- Implement application whitelisting to prevent unauthorized modifications to TapinRadio
🔍 How to Verify
Check if Vulnerable:
Check TapinRadio version in Help > About. If version is 2.13.7, system is vulnerable.Check Version:
In TapinRadio: Help > AboutVerify Fix Applied:
After update, verify version is higher than 2.13.7 and test proxy fields with large input (safe test with 20,000 'A' characters).📡 Detection & Monitoring
Log Indicators:
- Application crash logs from TapinRadio
- Windows Event Logs showing application failures
Network Indicators:
- No network indicators - local exploitation only
SIEM Query:
EventID=1000 OR EventID=1001 AND ProcessName="TapinRadio.exe"