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CVE-2017-8826 Explained : Impact and Mitigation

Learn about CVE-2017-8826 affecting FastStone Image Viewer version 6.2. Discover the impact, technical details, and mitigation steps for this security vulnerability.

FastStone Image Viewer version 6.2 is affected by a "User Mode Write AV" vulnerability that stems from the jpeg_mem_term function in libjpeg. Exploiting this flaw could lead to a Denial of Service (DoS) attack or other potential consequences.

Understanding CVE-2017-8826

This CVE entry highlights a security issue in FastStone Image Viewer version 6.2.

What is CVE-2017-8826?

The vulnerability in FastStone Image Viewer version 6.2 allows attackers to trigger a Denial of Service (DoS) by manipulating a corrupted JPEG file.

The Impact of CVE-2017-8826

If exploited, this vulnerability could result in a Denial of Service (Access Violation) or potentially lead to other undisclosed consequences.

Technical Details of CVE-2017-8826

FastStone Image Viewer version 6.2 is susceptible to a specific type of attack due to the following details:

Vulnerability Description

The issue is related to the "User Mode Write AV" problem, possibly originating from the jpeg_mem_term function in libjpeg.

Affected Systems and Versions

        Product: FastStone Image Viewer
        Version: 6.2

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating a corrupted JPEG file in FSViewer.exe.

Mitigation and Prevention

To address CVE-2017-8826, consider the following steps:

Immediate Steps to Take

        Update FastStone Image Viewer to a patched version.
        Avoid opening JPEG files from untrusted sources.

Long-Term Security Practices

        Regularly update software and applications to the latest versions.
        Implement security measures to prevent the execution of malicious files.

Patching and Updates

Ensure that all software, including FastStone Image Viewer, is regularly updated with the latest security patches.

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