CVE-2021-29364 : Exploit Details and Defense Strategies

A buffer overflow vulnerability in Formats!ReadRAS_W+0x1001 of Irfanview 4.57 allows attackers to execute arbitrary code via a crafted RLE file.

Understanding CVE-2021-29364

This CVE refers to a buffer overflow vulnerability in Irfanview version 4.57, enabling malicious actors to execute arbitrary code through a specially crafted RLE file.

What is CVE-2021-29364?

CVE-2021-29364 is a security flaw in Irfanview 4.57 that allows threat actors to trigger a buffer overflow in the Formats!ReadRAS_W+0x1001 function, leading to the execution of unauthorized code.

The Impact of CVE-2021-29364

The exploitation of CVE-2021-29364 could result in attackers gaining remote access to affected systems, executing arbitrary commands, and potentially causing a system compromise.

Technical Details of CVE-2021-29364

This section outlines the specific technical details of the CVE.

Vulnerability Description

The vulnerability arises in Formats!ReadRAS_W+0x1001 of Irfanview 4.57 due to improper validation of input from a crafted RLE file, allowing attackers to overflow a buffer and execute arbitrary code.

Affected Systems and Versions

Irfanview version 4.57 is known to be affected by this vulnerability.

Exploitation Mechanism

By creating a specially crafted RLE file and enticing a user to open it using Irfanview 4.57, an attacker can trigger the buffer overflow vulnerability and execute malicious code.

Mitigation and Prevention

In this section, we discuss the steps to mitigate and prevent the exploitation of CVE-2021-29364.

Immediate Steps to Take

Users should refrain from opening untrusted RLE files or files from unknown sources using Irfanview 4.57 to prevent potential exploitation of the vulnerability.

Long-Term Security Practices

Implementing strong file validation checks, keeping software up to date, and user training on cybersecurity best practices can enhance the overall security posture.

Patching and Updates

Users are advised to apply the latest security patches and updates provided by Irfanview to address the buffer overflow vulnerability in version 4.57.