CVE-2021-29366 Explained : Impact and Mitigation

A buffer overflow vulnerability in FORMATS!GetPlugInInfo+0x2de9 of Irfanview 4.57 allows attackers to execute arbitrary code via a crafted RLE file.

Understanding CVE-2021-29366

This CVE-2021-29366 refers to a buffer overflow vulnerability present in Irfanview 4.57, which could be exploited by attackers to execute malicious code.

What is CVE-2021-29366?

The CVE-2021-29366 vulnerability lies in the FORMATS!GetPlugInInfo+0x2de9 function of Irfanview 4.57. Attackers can trigger this flaw by utilizing a specially crafted RLE file to gain control over the affected system.

The Impact of CVE-2021-29366

If successfully exploited, the CVE-2021-29366 vulnerability could allow threat actors to remotely execute arbitrary code on the targeted system. This could result in a complete compromise of the system's security and integrity.

Technical Details of CVE-2021-29366

This section elaborates on the specific technical aspects related to CVE-2021-29366.

Vulnerability Description

The vulnerability arises due to a buffer overflow issue in the FORMATS!GetPlugInInfo+0x2de9 function of Irfanview 4.57, enabling attackers to inject and execute malicious code by exploiting a manipulated RLE file.

Affected Systems and Versions

Irfanview version 4.57 is identified as the affected version with this vulnerability. Users with this specific version are at risk of exploitation.

Exploitation Mechanism

Attackers can take advantage of the buffer overflow vulnerability in Irfanview 4.57 by crafting a malicious RLE file. Upon successful execution, unauthorized code can be run on the compromised system.

Mitigation and Prevention

To safeguard systems from potential exploitation of CVE-2021-29366, immediate actions and long-term security practices are crucial.

Immediate Steps to Take

Users are advised to update Irfanview to a patched version or implement recommended security measures to mitigate the risk of exploitation. Restricting access to the affected application can also reduce vulnerabilities.

Long-Term Security Practices

Maintaining up-to-date software versions, security patches, and regular security audits are essential for long-term protection against similar vulnerabilities. Additionally, user awareness and education on secure practices can enhance overall cybersecurity.

Patching and Updates

Vendor-released security patches should be promptly applied to address CVE-2021-29366. Regularly checking for updates and following best practices for secure software usage are fundamental in maintaining a resilient cybersecurity posture.