CVE-2020-23886 Explained : Impact and Mitigation

XnView MP v0.96.4 contains a heap overflow vulnerability that enables attackers to execute a denial of service attack by utilizing a crafted pict file.

Understanding CVE-2020-23886

XnView MP v0.96.4 heap overflow vulnerability

What is CVE-2020-23886?

This CVE refers to a heap overflow vulnerability in XnView MP v0.96.4 that can be exploited by attackers to trigger a denial of service (DoS) attack through a specifically crafted pict file. The vulnerability is associated with a User Mode Write AV starting at ntdll!RtlpLowFragHeapFree.

The Impact of CVE-2020-23886

Attackers can exploit this vulnerability to cause a DoS condition on systems running the affected version of XnView MP.

Technical Details of CVE-2020-23886

Details of the technical aspects of the vulnerability

Vulnerability Description

XnView MP v0.96.4 is susceptible to a heap overflow issue that allows threat actors to disrupt system availability by using a maliciously crafted pict file.

Affected Systems and Versions

Product: XnView MP
Version: 0.96.4

Exploitation Mechanism

Attackers can exploit this vulnerability by creating a specially crafted pict file to trigger the heap overflow, leading to a DoS condition.

Mitigation and Prevention

Measures to address and prevent the CVE-2020-23886 vulnerability

Immediate Steps to Take

Users should refrain from opening or accessing untrusted or suspicious pict files to mitigate the risk of exploitation.
Consider implementing file type restrictions or content filtering to prevent the execution of potentially malicious files.

Long-Term Security Practices

Regularly update XnView MP to the latest version to ensure that known vulnerabilities are patched.
Employ robust cybersecurity solutions such as antivirus software and intrusion detection systems to detect and block potential threats.

Patching and Updates

Stay informed about security updates and patches released by XnView MP and promptly apply them to safeguard against known vulnerabilities.