CVE-2019-25648: MyVideoConverter Pro DoS Vulnerability

CVE-2019-25648 Overview

CVE-2019-25648 is a local buffer overflow vulnerability affecting MyVideoConverter Pro version 3.14. The vulnerability exists in the registration code input field where insufficient bounds checking allows attackers to crash the application by supplying an excessively long string. When a malicious payload containing 10,000 bytes is pasted into the "Copy and Paste Registration Code" field, the application fails to properly validate the input length, resulting in a denial of service condition.

Critical Impact

Local attackers can exploit this buffer overflow to crash MyVideoConverter Pro 3.14, causing a denial of service condition that disrupts normal application functionality.

Affected Products

• MyVideoConverter Pro 3.14

Discovery Timeline

• 2026-03-26 - CVE CVE-2019-25648 published to NVD
• 2026-03-26 - Last updated in NVD database

Technical Details for CVE-2019-25648

Vulnerability Analysis

This vulnerability is classified under CWE-787 (Out-of-Bounds Write), which occurs when the software writes data past the end of an allocated buffer. In MyVideoConverter Pro 3.14, the registration code input mechanism lacks proper input validation and boundary checks. When a user pastes content exceeding the expected buffer size into the registration field, the application attempts to write beyond the allocated memory space, leading to memory corruption and subsequent application crash.

The local attack vector requires an attacker to have access to the system where MyVideoConverter Pro is installed. The exploitation requires no special privileges or user interaction beyond pasting the oversized payload into the registration field. While the vulnerability primarily results in availability impact through denial of service, out-of-bounds write vulnerabilities can potentially be escalated for more severe attacks depending on memory layout and exploitation techniques.

Root Cause

The root cause is improper input validation in the registration code handling functionality. The application allocates a fixed-size buffer for the registration code input but fails to enforce length restrictions before copying user-supplied data into this buffer. When input exceeding approximately 10,000 bytes is provided, the write operation overflows the buffer boundaries, corrupting adjacent memory and causing the application to crash.

Attack Vector

The attack vector is local, requiring the attacker to have direct access to the target system. The exploitation process involves:

1. Opening MyVideoConverter Pro 3.14 on the target system
2. Navigating to the registration interface
3. Generating a malicious payload consisting of approximately 10,000 bytes
4. Pasting the crafted payload into the "Copy and Paste Registration Code" field
5. The application processes the oversized input and crashes due to the buffer overflow

The vulnerability can be triggered through normal user interface interaction, making it straightforward to exploit once access to the system is obtained. Technical details and proof-of-concept information are available through the Exploit-DB #46309 reference.

Detection Methods for CVE-2019-25648

Indicators of Compromise

• Unexpected crashes or termination of the MyVideoConverter Pro application
• Crash dumps or error logs indicating memory access violations in the registration module
• Presence of large text strings (10,000+ bytes) in clipboard history or input logs

Detection Strategies

• Monitor for repeated application crashes of MyVideoConverter.exe through Windows Event Logs
• Implement endpoint detection rules to identify process termination events associated with access violations
• Deploy application crash monitoring to detect patterns of denial of service attempts

Monitoring Recommendations

• Enable crash dump collection for MyVideoConverter Pro to capture forensic evidence of exploitation attempts
• Configure endpoint protection to alert on repeated application failures within short time windows
• Monitor system event logs for application error events related to MyVideoConverter Pro processes

How to Mitigate CVE-2019-25648

Immediate Actions Required

• Consider removing or disabling MyVideoConverter Pro 3.14 from systems where it is not essential
• Restrict physical and remote access to systems running vulnerable versions of the software
• Implement application whitelisting to prevent unauthorized access to the MyVideoConverter Pro application
• Monitor for vendor updates or patches addressing this vulnerability

Patch Information

No vendor patch information is currently available for this vulnerability. Users should check the iVideogo Home Page for any security updates or newer versions that may address this issue. Additional advisory information is available from the VulnCheck Advisory - MyVideoConverter.

Workarounds

• Limit access to systems running MyVideoConverter Pro to trusted users only
• Consider using alternative video conversion software that is actively maintained and patched
• Disable clipboard functionality when using the registration interface if technically feasible
• Implement strict access controls on workstations where the application is installed