CVE-2020-23887 : Vulnerability Insights and Analysis

XnView MP v0.96.4 contains a heap overflow vulnerability that allows attackers to trigger a denial of service (DoS) by using a specially crafted ico file. The issue is related to a Read Access Violation starting at USER32!SmartStretchDIBits+0x33.

Understanding CVE-2020-23887

This CVE entry describes a specific vulnerability in XnView MP v0.96.4.

What is CVE-2020-23887?

CVE-2020-23887 is a heap overflow vulnerability in XnView MP v0.96.4 that can be exploited to cause a denial of service through a maliciously crafted ico file.

The Impact of CVE-2020-23887

The vulnerability can be exploited by attackers to crash the application, leading to a DoS condition. This could potentially disrupt normal operations and affect system availability.

Technical Details of CVE-2020-23887

This section provides more technical insights into the vulnerability.

Vulnerability Description

XnView MP v0.96.4 is susceptible to a heap overflow, which can be abused by malicious actors to execute a DoS attack using a specially crafted ico file.

Affected Systems and Versions

Product: XnView MP
Version: 0.96.4

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious ico file to trigger the heap overflow, leading to a DoS condition.

Mitigation and Prevention

Protecting systems from CVE-2020-23887 requires immediate actions and long-term security measures.

Immediate Steps to Take

Avoid opening untrusted or suspicious ico files in XnView MP v0.96.4 to prevent potential DoS attacks.
Consider using alternative software until a patch is available.

Long-Term Security Practices

Regularly update XnView MP to the latest version to mitigate known vulnerabilities.
Implement robust security measures such as network segmentation and access controls.

Patching and Updates

Stay informed about security updates and patches released by XnView to address the heap overflow vulnerability in version 0.96.4.