CVE-2017-7721 Explained : Impact and Mitigation

IrfanView version 4.44 (32bit) with the FPX Plugin before version 4.45 is susceptible to an Access Violation and crash when processing FlashPix (.FPX) files.

Understanding CVE-2017-7721

This CVE involves a vulnerability in IrfanView version 4.44 (32bit) with the FPX Plugin.

What is CVE-2017-7721?

The occurrence of an Access Violation and subsequent crash in IrfanView version 4.44 (32bit) equipped with the FPX Plugin, prior to version 4.45, arises when processing a FlashPix (.FPX) file.

The Impact of CVE-2017-7721

The vulnerability can lead to a denial of service (DoS) condition due to the crash triggered by processing malicious FlashPix files.

Technical Details of CVE-2017-7721

IrfanView version 4.44 (32bit) with the FPX Plugin is affected by this vulnerability.

Vulnerability Description

The issue results in an Access Violation and crash when handling FlashPix (.FPX) files.

Affected Systems and Versions

Product: IrfanView
Vendor: N/A
Versions affected: 4.44 (32bit) with FPX Plugin before 4.45

Exploitation Mechanism

The vulnerability is exploited by processing a specially crafted FlashPix (.FPX) file, triggering the Access Violation and subsequent crash.

Mitigation and Prevention

To address CVE-2017-7721, follow these steps:

Immediate Steps to Take

Update IrfanView to version 4.45 or later to mitigate the vulnerability.
Avoid opening FlashPix (.FPX) files from untrusted or unknown sources.

Long-Term Security Practices

Regularly update software and plugins to the latest versions.
Implement network security measures to prevent malicious files from reaching endpoints.

Patching and Updates

Apply patches and updates provided by IrfanView to fix the vulnerability and enhance system security.