CVE-2021-28835 : What You Need to Know

A Buffer Overflow vulnerability in XNView before 2.50 allows local attackers to execute arbitrary code via a crafted GEM bitmap file.

Understanding CVE-2021-28835

This section will cover the details surrounding CVE-2021-28835.

What is CVE-2021-28835?

CVE-2021-28835 is a Buffer Overflow vulnerability found in XNView before version 2.50. This vulnerability enables local attackers to execute arbitrary code by utilizing a specially crafted GEM bitmap file.

The Impact of CVE-2021-28835

The impact of this vulnerability is rated as high severity due to the potential for local attackers to execute unauthorized code on affected systems, posing a significant risk to confidentiality, integrity, and availability.

Technical Details of CVE-2021-28835

In this section, we will delve into the technical aspects of CVE-2021-28835.

Vulnerability Description

The Buffer Overflow vulnerability in XNView before 2.50 allows attackers to exceed the buffer's capacity, leading to potential arbitrary code execution.

Affected Systems and Versions

The affected vendor and product are not specified, indicating a general vulnerability present in XNView versions prior to 2.50.

Exploitation Mechanism

Local attackers can exploit this vulnerability by crafting a malicious GEM bitmap file to trigger the Buffer Overflow and execute arbitrary code.

Mitigation and Prevention

Explore the following measures to mitigate the risks associated with CVE-2021-28835.

Immediate Steps to Take

It is recommended to update XNView to version 2.50 or later to eliminate the vulnerability and prevent exploitation.

Long-Term Security Practices

Practice secure file handling protocols and regularly update software to patch known vulnerabilities and enhance overall system security.

Patching and Updates

Stay informed about security updates for XNView and promptly apply patches released by the vendor to safeguard your systems against potential threats.