CVE-2021-28427 : Vulnerability Insights and Analysis

A Buffer Overflow vulnerability in XNView version 2.49.3 allows local attackers to execute arbitrary code via a crafted TIFF file.

Understanding CVE-2021-28427

This CVE identifies a critical vulnerability in XNView version 2.49.3 that can be exploited by local attackers to run arbitrary code through a specially crafted TIFF file.

What is CVE-2021-28427?

CVE-2021-28427 is a Buffer Overflow vulnerability in XNView version 2.49.3, which enables attackers with local access to execute malicious code on the affected system.

The Impact of CVE-2021-28427

The impact of this vulnerability is rated as HIGH, as it allows attackers to gain unauthorized access, compromise data confidentiality, integrity, and the availability of the system.

Technical Details of CVE-2021-28427

This section covers specific technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from an issue in XNView version 2.49.3 that fails to properly handle TIFF files, leading to a buffer overflow condition.

Affected Systems and Versions

XNView version 2.49.3 is specifically impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by enticing a local user into opening a maliciously crafted TIFF file, triggering the buffer overflow and executing arbitrary code.

Mitigation and Prevention

Protecting systems from CVE-2021-28427 requires immediate action to secure the environment and prevent exploitation.

Immediate Steps to Take

Immediate actions include disabling XNView or updating to a patched version to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing strong security practices such as regular software updates, user training, and access control measures can enhance overall system security.

Patching and Updates

Applying official patches released by XNView is crucial to address the vulnerability and protect systems from potential attacks.