CVE-2017-16813 : Security Advisory and Response

The Foxit MobilePDF app version 6.1 or earlier for iOS has a denial-of-service vulnerability when processing files with hexadecimal Unicode characters in the filename parameter.

Understanding CVE-2017-16813

This CVE entry identifies a denial-of-service issue in the Foxit MobilePDF app for iOS.

What is CVE-2017-16813?

This vulnerability occurs when a user uploads a file containing a hexadecimal Unicode character in the filename parameter over Wi-Fi, causing the app to struggle with interpreting and processing the input.

The Impact of CVE-2017-16813

The vulnerability could lead to a denial-of-service condition in the Foxit MobilePDF app, affecting its functionality and potentially disrupting user experience.

Technical Details of CVE-2017-16813

The technical aspects of this CVE entry are as follows:

Vulnerability Description

The Foxit MobilePDF app version 6.1 or earlier for iOS is susceptible to a denial-of-service problem triggered by uploading files with specific characters in the filename parameter.

Affected Systems and Versions

Product: Foxit MobilePDF app
Vendor: Foxit Software
Versions affected: 6.1 and earlier

Exploitation Mechanism

The vulnerability is exploited by uploading a file with a hexadecimal Unicode character in the filename parameter over Wi-Fi, causing processing issues within the app.

Mitigation and Prevention

To address CVE-2017-16813, consider the following mitigation strategies:

Immediate Steps to Take

Update the Foxit MobilePDF app to the latest version to patch the vulnerability.
Avoid uploading files with special characters in the filename parameter.

Long-Term Security Practices

Regularly update all applications to their latest versions to ensure security patches are in place.
Educate users on safe file handling practices to prevent similar vulnerabilities.

Patching and Updates

Ensure timely installation of software updates and security patches to mitigate the risk of exploitation.