CVE-2019-25565: Magic Iso Maker DoS Vulnerability

CVE-2019-25565 Overview

CVE-2019-25565 is a buffer overflow vulnerability affecting Magic Iso Maker version 5.5 build 281. The vulnerability exists in the Serial Code registration field and allows local attackers to crash the application by submitting an oversized input. By generating a file containing 5000 bytes of data and pasting it into the Serial Code field during registration, an attacker can trigger a denial of service condition that crashes the application.

Critical Impact

Local attackers can exploit this buffer overflow vulnerability to cause application crashes and denial of service by providing oversized input to the Serial Code registration field.

Affected Products

• Magic Iso Maker 5.5 build 281

Discovery Timeline

• 2026-03-21 - CVE CVE-2019-25565 published to NVD
• 2026-03-23 - Last updated in NVD database

Technical Details for CVE-2019-25565

Vulnerability Analysis

This vulnerability is classified under CWE-787 (Out-of-Bounds Write), indicating that the application writes data beyond the boundaries of allocated memory buffers. When a user enters serial code data into the registration field, the application fails to properly validate the length of the input before copying it into a fixed-size buffer. This lack of bounds checking allows an attacker to overflow the buffer with excessive data.

The vulnerability requires local access to the system where Magic Iso Maker is installed. No user interaction beyond launching the application and navigating to the registration dialog is required to trigger the vulnerability. The attack results in high availability impact through application crashes, though there is no impact on confidentiality or integrity of data.

Root Cause

The root cause of this vulnerability is improper input validation in the Serial Code registration field handler. The application allocates a fixed-size buffer for the serial code input but does not verify that user-supplied data fits within this buffer before performing the copy operation. When input exceeds the buffer capacity, memory corruption occurs, leading to application instability and crashes.

Attack Vector

The attack vector is local, requiring the attacker to have access to a system where Magic Iso Maker is installed. The exploitation process involves:

1. Creating a file containing approximately 5000 bytes of arbitrary data
2. Opening Magic Iso Maker and navigating to the registration dialog
3. Pasting the oversized content into the Serial Code field
4. Triggering the buffer overflow, which crashes the application

The exploitation does not require elevated privileges or special authentication. The vulnerability has been documented in public exploit databases, with proof-of-concept code available through Exploit-DB #46656.

Detection Methods for CVE-2019-25565

Indicators of Compromise

• Unexpected crashes of the MagicISO.exe process during registration attempts
• Windows Error Reporting events indicating memory access violations in Magic Iso Maker
• Large clipboard data operations followed by application crashes

Detection Strategies

• Monitor for repeated crashes of Magic Iso Maker processes, particularly during registration workflows
• Implement endpoint detection rules for buffer overflow indicators such as access violations and stack corruption in the Magic Iso Maker process
• Enable Windows Defender Exploit Guard to detect and block exploitation attempts targeting buffer overflow vulnerabilities

Monitoring Recommendations

• Review Windows Event Logs for Application Error events (Event ID 1000) associated with MagicISO.exe
• Configure endpoint security solutions to alert on memory corruption patterns in legacy applications
• Audit systems for the presence of vulnerable Magic Iso Maker installations (5.5 build 281)

How to Mitigate CVE-2019-25565

Immediate Actions Required

• Consider removing or replacing Magic Iso Maker 5.5 build 281 with alternative ISO management software
• Restrict local access to systems where Magic Iso Maker is installed to trusted users only
• Implement application whitelisting policies to control which applications can execute

Patch Information

No official patch information is currently available from the vendor. Users should check the MagicISO Official Website for potential updates or newer versions that may address this vulnerability. Additional details can be found in the VulnCheck Advisory on MagicISO.

Workarounds

• Avoid using the registration functionality in Magic Iso Maker if a legitimate license is not required
• Consider using alternative ISO image creation software that is actively maintained
• Implement endpoint protection solutions with exploit mitigation capabilities such as DEP (Data Execution Prevention) and ASLR (Address Space Layout Randomization) enforcement
• Restrict clipboard paste operations in enterprise environments where this application is deployed