CVE-2018-11705 : What You Need to Know

FastStone Image Viewer 6.2 is vulnerable to a User Mode Write Access Violation (AV) when handling malformed JPEG files, potentially leading to a denial of service (DoS) attack.

Understanding CVE-2018-11705

This CVE involves a specific vulnerability in FastStone Image Viewer 6.2 that could be exploited by attackers.

What is CVE-2018-11705?

The User Mode Write AV at 0x00578cc4 vulnerability occurs in FastStone Image Viewer 6.2 when a malformed JPEG file is opened, and the FSViewer.exe application fails to handle it correctly. This flaw could allow attackers to trigger a denial of service (Access Violation) or potentially exploit other unspecified impacts.

The Impact of CVE-2018-11705

The vulnerability could result in a denial of service attack or other adverse effects, depending on the attacker's intentions.

Technical Details of CVE-2018-11705

FastStone Image Viewer 6.2 is susceptible to a specific type of vulnerability.

Vulnerability Description

The User Mode Write AV at 0x00578cc4 vulnerability in FastStone Image Viewer 6.2 is triggered by opening a malformed JPEG file that FSViewer.exe does not handle properly.

Affected Systems and Versions

Product: FastStone Image Viewer 6.2
Vendor: FastStone
Version: 6.2

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious JPEG file to trigger the Access Violation and potentially disrupt the application's normal operation.

Mitigation and Prevention

Steps to address and prevent the CVE-2018-11705 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 and detect potential attacks.

Patching and Updates

Check for updates from FastStone and apply patches promptly to address the vulnerability.