CVE-2017-11421 Explained : Impact and Mitigation

A vulnerability known as the "Bad Taste" issue in gnome-exe-thumbnailer before version 0.9.5 allows for VBScript Injection when creating thumbnails for MSI files, posing a threat to local users utilizing the GNOME Files file manager.

Understanding CVE-2017-11421

This CVE entry highlights a security flaw in gnome-exe-thumbnailer that could lead to VBScript Injection.

What is CVE-2017-11421?

The vulnerability in gnome-exe-thumbnailer before version 0.9.5 enables VBScript Injection during the thumbnail creation process for MSI files.

The Impact of CVE-2017-11421

The vulnerability poses a risk to local users of the GNOME Files file manager who access directories containing .msi files with VBScript code embedded in their names.

Technical Details of CVE-2017-11421

This section delves into the technical aspects of the CVE.

Vulnerability Description

The flaw in gnome-exe-thumbnailer allows for VBScript Injection when generating thumbnails for MSI files, also known as the "Bad Taste" issue.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Before version 0.9.5

Exploitation Mechanism

The vulnerability can be exploited by creating a thumbnail for an MSI file with VBScript code in its name, targeting users of the GNOME Files file manager.

Mitigation and Prevention

Protecting systems from CVE-2017-11421 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update gnome-exe-thumbnailer to version 0.9.5 or newer to mitigate the VBScript Injection vulnerability.
Avoid accessing directories with suspicious .msi files.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Educate users on safe browsing habits and file management practices.

Patching and Updates

Ensure that all relevant software and systems are regularly updated to the latest versions to prevent exploitation of known vulnerabilities.