CVE-2020-21426 Explained : Impact and Mitigation

FreeImage 3.18.0 Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp allows remote attackers to run arbitrary code via crafted image file.

Understanding CVE-2020-21426

This CVE identifies a Buffer Overflow vulnerability in FreeImage 3.18.0 that could be exploited by remote attackers to execute arbitrary code.

What is CVE-2020-21426?

The CVE-2020-21426 vulnerability involves a Buffer Overflow issue in the C_IStream::read function within PluginEXR.cpp in FreeImage 3.18.0, enabling attackers to potentially execute malicious code by manipulating a specially crafted image file.

The Impact of CVE-2020-21426

The exploitation of this vulnerability could lead to the execution of arbitrary code and other adverse effects by remote attackers.

Technical Details of CVE-2020-21426

Vulnerability Description

The vulnerability lies in the C_IStream::read function in PluginEXR.cpp in FreeImage 3.18.0, allowing attackers to trigger a Buffer Overflow by using a malicious image file.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Version: 3.18.0

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a specific image file to trigger the Buffer Overflow in the C_IStream::read function.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Avoid opening image files from untrusted or unknown sources.
Implement network security measures to prevent unauthorized access.

Long-Term Security Practices

Regularly update software and applications to mitigate known vulnerabilities.
Conduct security training for users to recognize and report suspicious activities.

Patching and Updates

It is crucial to install the latest patches and updates released by FreeImage to address the Buffer Overflow vulnerability in version 3.18.0.