CVE-2019-25362
📋 TL;DR
CVE-2019-25362 is a critical buffer overflow vulnerability in WMV to AVI MPEG DVD WMV Convertor 4.6.1217 that allows remote attackers to execute arbitrary code by crafting malicious license name and code fields. This affects users of this specific video conversion software version, potentially leading to complete system compromise.
💻 Affected Systems
- WMV to AVI MPEG DVD WMV Convertor
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining remote shell access (port 4444 bind shell), data theft, ransomware deployment, and persistent backdoor installation.
Likely Case
Attackers exploiting this to install malware, cryptocurrency miners, or credential stealers on vulnerable systems.
If Mitigated
Limited impact with proper network segmentation, application whitelisting, and user privilege restrictions preventing successful exploitation.
🎯 Exploit Status
Exploit code is publicly available on Exploit-DB (47563, 47568) demonstrating bind shell payload on port 4444 with 6000-byte buffer overflow.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.alloksoft.com/
Restart Required: No
Instructions:
1. Check vendor website for updated version. 2. Uninstall vulnerable version 4.6.1217. 3. Install patched version if available. 4. Consider alternative video conversion software.
🔧 Temporary Workarounds
Application Removal
windowsUninstall the vulnerable software to eliminate the attack surface
Control Panel > Programs > Uninstall a program > Select 'WMV to AVI MPEG DVD WMV Convertor' > Uninstall
Network Blocking
windowsBlock outbound connections on port 4444 to prevent bind shell communication
netsh advfirewall firewall add rule name="Block CVE-2019-25362" dir=out action=block protocol=TCP localport=4444
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of unauthorized software
- Restrict user privileges to standard user accounts (not administrator)
🔍 How to Verify
Check if Vulnerable:
Check installed programs for 'WMV to AVI MPEG DVD WMV Convertor' version 4.6.1217Check Version:
wmic product where name="WMV to AVI MPEG DVD WMV Convertor" get versionVerify Fix Applied:
Confirm software is either updated to newer version or completely uninstalled📡 Detection & Monitoring
Log Indicators:
- Unusual process creation from video converter executable
- Failed license validation attempts with long strings
Network Indicators:
- Outbound connections to port 4444 from video converter process
- Unusual network traffic patterns from converter application
SIEM Query:
process_name:"WMVConvertor.exe" AND (network_port:4444 OR process_cmdline:"*6000*" OR event_id:4688)