CVE-2019-25617: Ease Audio Converter DoS Vulnerability

CVE-2019-25617 Overview

Ease Audio Converter 5.30 contains a denial of service vulnerability in the Audio Cutter function that allows local attackers to crash the application by processing malformed MP4 files. Attackers can create a crafted MP4 file containing an oversized buffer and load it through the Audio Cutter interface to trigger an application crash.

Critical Impact

Local attackers can cause complete application denial of service by exploiting improper input validation in the Audio Cutter feature when processing specially crafted MP4 files.

Affected Products

• Ease Audio Converter version 5.30
• Audio Cutter functionality within Ease Audio Converter
• Windows installations running the vulnerable application version

Discovery Timeline

• 2026-03-22 - CVE CVE-2019-25617 published to NVD
• 2026-03-23 - Last updated in NVD database

Technical Details for CVE-2019-25617

Vulnerability Analysis

This vulnerability is classified under CWE-226 (Sensitive Information in Resource Not Removed Before Reuse), though the primary impact is denial of service through improper handling of malformed media files. The flaw resides in the Audio Cutter component of Ease Audio Converter, which fails to properly validate MP4 file structures before processing. When a user loads a specially crafted MP4 file containing an oversized buffer, the application does not perform adequate boundary checks, resulting in an unhandled exception that crashes the application.

The vulnerability requires local access and user interaction to exploit, as an attacker must convince a user to load the malicious file through the application's Audio Cutter interface. While the impact is limited to application availability without affecting confidentiality or integrity, it can disrupt workflows in environments relying on this audio processing tool.

Root Cause

The root cause stems from insufficient input validation in the MP4 file parsing routine within the Audio Cutter function. The application fails to properly verify buffer sizes specified in MP4 file headers against actual data boundaries, allowing an attacker to craft a file with manipulated size fields that trigger memory access violations when parsed.

Attack Vector

The attack requires local access to the target system. An attacker must craft a malicious MP4 file with an oversized buffer specification and either place it on the target system or deliver it through social engineering. When a user opens this file using the Audio Cutter feature in Ease Audio Converter 5.30, the application attempts to process the malformed file structure, leading to an application crash. The attack does not require elevated privileges and can be executed by any local user with access to the vulnerable application.

The exploitation mechanism involves creating an MP4 file with crafted header fields that specify buffer sizes exceeding allocated memory regions. When the Audio Cutter parses these headers and attempts to read the specified data, it results in memory access violations that crash the application. Technical details of this exploitation technique are documented in the Exploit-DB #46732 advisory.

Detection Methods for CVE-2019-25617

Indicators of Compromise

• Unexpected crashes of audioconverter.exe process during MP4 file processing
• Windows Event Log entries showing application faults in Ease Audio Converter
• Presence of unusually structured MP4 files in user directories or download folders
• Multiple application restart attempts in quick succession

Detection Strategies

• Monitor for repeated crashes of the Ease Audio Converter application using Windows Event Viewer
• Implement file integrity monitoring to detect suspicious MP4 files with anomalous header structures
• Deploy endpoint detection rules that alert on application fault patterns associated with media processing tools
• Review application crash dumps for memory access violations related to buffer overruns

Monitoring Recommendations

• Enable Windows Error Reporting to capture crash telemetry for Ease Audio Converter
• Implement SentinelOne behavioral monitoring to detect exploitation attempts targeting media applications
• Configure alerts for unusual file access patterns involving MP4 files and audio processing software
• Monitor user reports of application instability when processing media files

How to Mitigate CVE-2019-25617

Immediate Actions Required

• Advise users to avoid opening untrusted MP4 files with Ease Audio Converter
• Consider removing or disabling Ease Audio Converter 5.30 in enterprise environments until a patch is available
• Implement application whitelisting to control which media processing tools can execute
• Train users to recognize potential social engineering attempts involving malicious media files

Patch Information

No vendor patch information is currently available for this vulnerability. Users should check the Audiotool Download Page for any updated versions that may address this issue. The VulnCheck Advisory on Ease Audio Converter provides additional technical details and mitigation guidance.

Workarounds

• Use alternative audio conversion software that does not contain this vulnerability
• Process MP4 files only from trusted sources with verified integrity
• Implement file type filtering on email gateways and download portals to quarantine suspicious MP4 files
• Run Ease Audio Converter in an isolated environment or sandbox when processing untrusted files

In the absence of a vendor patch, organizations should consider transitioning to alternative audio processing tools that receive active security maintenance. If continued use of Ease Audio Converter is necessary, implement strict controls around file sources and user education to minimize exploitation risk.