CVE-2018-11701 Explained : Impact and Mitigation

FastStone Image Viewer 6.2 is susceptible to a User Mode Write Access Violation (AV) at 0x005cb509 due to mishandling of corrupted JPEG files by the FSViewer.exe application. This vulnerability could be exploited by unauthorized users to trigger a Denial of Service (DoS) attack or potentially lead to other adverse effects.

Understanding CVE-2018-11701

This CVE entry highlights a security flaw in FastStone Image Viewer 6.2 that could be leveraged by attackers to disrupt the application's normal operation.

What is CVE-2018-11701?

The vulnerability in FastStone Image Viewer 6.2 allows for a User Mode Write AV at memory address 0x005cb509 when processing malformed JPEG files, potentially leading to a DoS condition or other unknown consequences.

The Impact of CVE-2018-11701

The mishandling of corrupted JPEG files by FSViewer.exe in FastStone Image Viewer 6.2 poses a risk of DoS attacks and other potential security breaches if exploited by malicious actors.

Technical Details of CVE-2018-11701

FastStone Image Viewer 6.2 vulnerability specifics and potential risks.

Vulnerability Description

User Mode Write AV at 0x005cb509 in FastStone Image Viewer 6.2 due to mishandling of corrupted JPEG files by FSViewer.exe.

Affected Systems and Versions

Product: FastStone Image Viewer 6.2
Vendor: FastStone
Version: Not applicable

Exploitation Mechanism

Attackers can exploit the vulnerability by crafting and delivering a specially crafted malformed JPEG file to trigger the AV in FSViewer.exe.

Mitigation and Prevention

Steps to address and prevent the CVE-2018-11701 vulnerability.

Immediate Steps to Take

Avoid opening JPEG files from untrusted or unknown sources.
Consider using alternative image viewing applications until a patch is available.

Long-Term Security Practices

Regularly update FastStone Image Viewer to the latest version to mitigate known vulnerabilities.
Implement robust security measures to prevent unauthorized access to the application.

Patching and Updates

Monitor for security advisories from FastStone and apply patches promptly to address CVE-2018-11701.