CVE-2021-29365 : What You Need to Know

Irfanview 4.57 is affected by an infinite loop when processing a crafted BMP file in the EFFECTS!AutoCrop_W component, leading to a denial of service (DOS).

Understanding CVE-2021-29365

This section provides insights into the impact, technical details, and mitigation strategies regarding CVE-2021-29365.

What is CVE-2021-29365?

CVE-2021-29365 involves an infinite loop vulnerability in Irfanview 4.57, triggered while processing a specially crafted BMP file in the EFFECTS!AutoCrop_W component. This flaw can be exploited by an attacker to launch a denial of service attack, disrupting the normal functionality of the application.

The Impact of CVE-2021-29365

The vulnerability in Irfanview 4.57 can have severe consequences, resulting in a denial of service condition. This could potentially impact the availability of the application or system where Irfanview is being used.

Technical Details of CVE-2021-29365

This section delves into the specifics of the vulnerability, including affected systems, exploitation mechanism, and related details.

Vulnerability Description

The vulnerability in Irfanview 4.57 arises due to an infinite loop issue during the processing of a manipulated BMP file in the EFFECTS!AutoCrop_W element. This loop can lead to excessive resource consumption and application unresponsiveness.

Affected Systems and Versions

Irfanview 4.57 is the specific version impacted by this vulnerability. Users utilizing this version are at risk of encountering the infinite loop issue while handling specially crafted BMP files.

Exploitation Mechanism

Cybercriminals can exploit this vulnerability by crafting malicious BMP files and convincing users to open them using Irfanview 4.57. Upon opening these files, the application enters an infinite loop, causing a denial of service condition.

Mitigation and Prevention

To safeguard systems and mitigate the risks associated with CVE-2021-29365, immediate and long-term preventive measures should be implemented.

Immediate Steps to Take

Users are advised to refrain from opening untrusted BMP files with Irfanview 4.57 and consider using alternative image viewing applications until a patch is available.

Long-Term Security Practices

Maintaining updated security solutions, educating users about file safety practices, and employing network intrusion detection systems can bolster overall security posture against potential threats.

Patching and Updates

Vendor-issued patches play a crucial role in addressing vulnerabilities. Ensure to regularly check for updates from the official Irfanview vendor to apply necessary patches and security fixes.