CVE-2021-46064 : Exploit Details and Defense Strategies

IrfanView 4.59 is vulnerable to a buffer overflow via a specific function, potentially triggered by opening a malicious .tiff image.

Understanding CVE-2021-46064

This CVE details a vulnerability in IrfanView version 4.59 that can lead to a buffer overflow.

What is CVE-2021-46064?

The vulnerability in IrfanView 4.59 can be exploited through a particular function at address 0x413c70, specifically in the 32-bit version of the binary when a user opens a corrupted .tiff image.

The Impact of CVE-2021-46064

If exploited, this vulnerability can allow an attacker to execute arbitrary code or crash the application, potentially leading to denial of service or remote code execution.

Technical Details of CVE-2021-46064

This section outlines the technical specifics of the vulnerability.

Vulnerability Description

The vulnerability in IrfanView 4.59 occurs due to a buffer overflow in a specific function, triggered by opening a malicious .tiff image.

Affected Systems and Versions

Affected Product: IrfanView 4.59
Affected Version: 32-bit binary

Exploitation Mechanism

The vulnerability can be exploited when a user opens a corrupted .tiff image, potentially leading to arbitrary code execution or application crashes.

Mitigation and Prevention

Protecting systems against CVE-2021-46064 is crucial to maintaining security.

Immediate Steps to Take

Avoid opening untrusted .tiff images in IrfanView.
Consider using alternative image viewing software until a patch is available.

Long-Term Security Practices

Regularly update IrfanView to the latest version to apply security patches.
Educate users about safe browsing practices and potential risks of opening untrusted files.

Patching and Updates

Ensure prompt installation of updates provided by IrfanView to address the vulnerability and enhance overall system security.