CVE-2019-25615: Lavavo CD Ripper Buffer Overflow Flaw

CVE-2019-25615 Overview

Lavavo CD Ripper 4.20 contains a structured exception handling (SEH) buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious string in the License Activation Name field. This vulnerability is classified as CWE-787 (Out-of-bounds Write), enabling attackers to craft a payload with controlled buffer data, NSEH jump instructions, and SEH handler addresses to trigger code execution and establish a bind shell on port 3110.

Critical Impact

Local attackers can achieve arbitrary code execution by exploiting the SEH buffer overflow in the License Activation Name field, potentially leading to complete system compromise and establishing persistent backdoor access via bind shell.

Affected Products

• Lavavo CD Ripper version 4.20

Discovery Timeline

• 2026-03-22 - CVE CVE-2019-25615 published to NVD
• 2026-03-23 - Last updated in NVD database

Technical Details for CVE-2019-25615

Vulnerability Analysis

This vulnerability exists in the License Activation Name field of Lavavo CD Ripper 4.20. The application fails to properly validate the length of user-supplied input in this field, allowing an attacker to overflow a stack-based buffer and overwrite the Structured Exception Handler (SEH) chain. SEH-based exploits are a well-known technique on Windows systems where attackers manipulate the exception handling mechanism to redirect program execution flow.

When a specially crafted string exceeds the expected buffer boundaries, it overwrites critical stack structures including the Next SEH (NSEH) pointer and the SEH handler address. By carefully controlling these values, an attacker can redirect execution to their shellcode when an exception is triggered, ultimately achieving arbitrary code execution with the privileges of the application.

Root Cause

The root cause is improper input validation (CWE-787: Out-of-bounds Write) in the License Activation Name field processing routine. The application allocates a fixed-size buffer for the license name but does not enforce length restrictions on user input before copying the data. This allows an attacker to write beyond the allocated buffer boundaries, corrupting adjacent memory structures including the SEH chain stored on the stack.

Attack Vector

The attack requires local access to the system where Lavavo CD Ripper 4.20 is installed. An attacker must interact with the License Activation functionality and supply a malicious string in the Name field. The attack sequence involves:

1. Creating a buffer overflow payload with a specific pattern to reach the SEH structures
2. Overwriting the NSEH pointer with a short jump instruction to bypass the SEH handler
3. Placing the SEH handler address pointing to a POP/POP/RET gadget
4. Including shellcode that establishes a bind shell listener on port 3110

The vulnerability exploitation mechanism involves crafting a payload with controlled buffer data that overflows into the SEH chain structures. When the exception handler is invoked, execution is redirected through the attacker-controlled addresses, ultimately executing the embedded shellcode. Technical details and proof-of-concept information are available in the Exploit-DB #46755 advisory.

Detection Methods for CVE-2019-25615

Indicators of Compromise

• Unexpected network connections on port 3110 from systems running Lavavo CD Ripper
• Abnormal process behavior or crash dumps associated with Lavavo CD Ripper.exe
• Evidence of license activation attempts with unusually long name strings in application logs
• Suspicious shellcode patterns in memory dumps from the affected application

Detection Strategies

• Monitor for processes spawned by Lavavo CD Ripper that establish listening network sockets
• Implement application whitelisting to detect unauthorized code execution from within trusted applications
• Deploy endpoint detection solutions that can identify SEH exploitation patterns and stack pivoting techniques
• Analyze application crash reports for evidence of buffer overflow exploitation attempts

Monitoring Recommendations

• Enable Windows Event Log auditing for application crashes and exceptions
• Configure network monitoring to alert on new listening ports, particularly port 3110
• Implement file integrity monitoring on Lavavo CD Ripper installation directories
• Deploy SentinelOne agents to detect and prevent exploitation attempts in real-time

How to Mitigate CVE-2019-25615

Immediate Actions Required

• Discontinue use of Lavavo CD Ripper 4.20 until a patched version is available
• Remove the application from systems where it is not business-critical
• Restrict local user access to systems where the vulnerable application must remain installed
• Implement network segmentation to limit the impact of potential bind shell access

Patch Information

No vendor patch is currently available for this vulnerability. The LavaVo Software Homepage should be monitored for any security updates or newer versions that may address this issue. Users are advised to consult the VulnCheck Advisory on Buffer Overflow for the latest information on remediation options.

Workarounds

• Remove or disable Lavavo CD Ripper 4.20 from production systems
• Implement application control policies to prevent execution of the vulnerable software
• Use alternative CD ripping software that has an active security maintenance program
• Apply the principle of least privilege to limit the impact if exploitation occurs

Consider transitioning to actively maintained alternative software solutions. If the application must be used, ensure systems are isolated and monitored with SentinelOne endpoint protection to detect and prevent exploitation attempts targeting SEH buffer overflow vulnerabilities.